Quality Of Parts And Dependable Service From Jsai?

[Addicted2Boost]

Hey Guys,

I dont come on here much as im in NZ, and even NZ has hardly any GTR owners, so im usually on the GTR.CO.UK fourms....

Anyways, i wanted to do a quick search on Google on the quality of parts that JSAI produce before i made my order, and i found several threads of questionable business practices by them. Now being in New Zealand, that would be an important consideration given the distance etc.

Late last year, I experianced some of the concerns that skyline owners in Australia were having.... Even enquires were given back with 1 line replies and further enquiry's just ignored... So i sorta left it trying to get some parts here. But since NZ is so damn small, looks like i might need to order from JSAI. Wanting to get a host of parts like carbon bonnet, rear pods, front diffuser etc for my R34 GTR

Just weighing up if i shud just get a front diffuser for my GTR or get an entire replacement with Z-tune front bar. For large parts like a bumper, how is the quality, cos i know that fibreglass seem to be very "lumpy" and not as smooth as plastic/genuine OEM parts. Can someone post up pics of JSAI parts like front/rear bumper.

Seems like issues of not replying, long wait times, mis match of ordered parts, etc have been ongoing since mid last year and into this year... has any recent guys on here experianced a turn around? As this is a big concern for me... Also the quality of parts. I would love to see some parts in person, but well...

[N1GTR]

How cheap are flights thesedays?

If you can get cheap flights id order the parts, then agree on a date when they'll be ready, come over and pick them up yourself and pay on the spot for them. Then send them to yourself using pack and send (who are just up the road from JSAI) and fly home. Bring the Mrs - make a weekend out of it

[SECURITY]

or just pay someone local to act as your agent.

[GTR-N1]

As far as quality is concerned, Josh's bodykit fitted perfectly on my car and my panelbeater complimented him on a perfect fit.

As far as packing is concerned, I've heard that he's quite meticulous with the way his kits are packed.

I am aware that he was disappointed with a couple of his staff last year and therefore had to let them go.

So perhaps, in dealing with JSAI, you should ask for Josh, deal with Josh and nothin' but Josh.

[Addicted2Boost]

As far as quality is concerned, Josh's bodykit fitted perfectly on my car and my panelbeater complimented him on a perfect fit.

As far as packing is concerned, I've heard that he's quite meticulous with the way his kits are packed.

I am aware that he was disappointed with a couple of his staff last year and therefore had to let them go.

So perhaps, in dealing with JSAI, you should ask for Josh, deal with Josh and nothin' but Josh.

Thanks Terry,

Yeah i still remember your car from last year! You sent me an email of pics of your car and yes they are nice. But they were just sideskirts, really wanting to see how large surface areas will come out as such as a front bumper or the z-tune guards. U done anything else?

Oh just an update on my car, added tomei cams and gears and modified the twin turbo pipe... made 310kw @ wheels all on factory turbos and injectors. They are pretty much maxed out of course, but very good response from factory turbos boosting 1bar below 3000rpm... makes me sorta turn away at the idea of so called "response" 2530 turbos when it comes to my next engine mods.... seen some charts and it needs extra 1500-2000 rpm to get 1bar... same goes for power, up to 5000rpm factory turbos make more power...

[GTR-N1]

Yes, I've sourced info from Powerplay about an increase in power from modifying the twin turbo pipe.

That's a great awkw figure.

Can't help you any more about JSAI tho' David.

Cheers,

Terry

[R31Nismoid]

Oh just an update on my car, added tomei cams and gears and modified the twin turbo pipe... made 310kw @ wheels all on factory turbos and injectors.

FYI there is no way your making 310rwkw on stock turbos, and untouched injectors (without a FPR etc) the limit is around 270-280rwkw for both turbos and injectors without FPR.

So whoever tuned it etc is having you on big time unfortunately, as some places like to do.

Check the RB26 Dyno results thread if you dont believe me

Either that or you have aftermarket turbos

[Addicted2Boost]

FYI there is no way your making 310rwkw on stock turbos, and untouched injectors (without a FPR etc) the limit is around 270-280rwkw for both turbos and injectors without FPR.

So whoever tuned it etc is having you on big time unfortunately, as some places like to do.

Check the RB26 Dyno results thread if you dont believe me

Either that or you have aftermarket turbos

LOL, thats nice... perhaps you know alot to say something like "there is no way" instead of just enquiring to get more info.... The GTR.CO.UK guys never have questioned that power level for the mods... neither has infamos RIPS in NZ. Have you heard of ST HITEC? He is pretty much 'the' guy here in Auckland to take GTRs to. He done most of the work on my car. Dispite NZs low number in GTRs, everytime i go there he has atleast 2 GTRs hes working on. Also has had 2-3 R35 GTRs there already. He does a blog and tunes alot of cars. Even had a Lambo diablo V12... haha, but only made 250kw @ wheels.

I dont think the numbers are wrong at all, becuase the cars he tunes aswell as GTRs (EVOs, STIs, S2000) produce and corresponds to numbers that other people are reporting based on the mods. FYI, Speed magazine which i prefer over fast4s etc... had an article a few years back comparing EVO7, STI, and R34 GTR doing basic mods, all exhaust and ECU and the 34 made 271kw @ wheels. Funny enough, i made 270kw. Since then, ive done Apexi power filter in factory air box, modified the twin turbo outlet pipe (dyno proved in UK and in NZ to make 4-5kw @ wheels on factory setup) and added Tomei PonCams and adjustable tomei gears. Clutch never slipped at 270, and started to on my next stage of mods, so ended up having to get a NISMO twin plate with NISMO lightened flywheel etc...

An R33 GTR in the UK that has exactly the same mods as me is also making a tad over 300kw @ wheels with the above setup (using R34 turbos)....

Check his site out, interesting reading... if u dont mind the broken english haha.

http://www.sthitec.co.nz/

http://sthitec.blogspot.com/

Edited March 13, 2009 by Addicted2Boost

[Addicted2Boost]

Mind you, maybe cos the route i took with the mods is slightly different?

Cos most ppl do the turbos, injectors, AFM, Pump first instead of CAMS and the turbo outlet has only recently being modded. (Adding a divider plate where turbo 2 joins turbo 1)

Cos when i was posting about doing cams etc, i DID get a bit of flack saying its sorta taking a wierd route in doing mods, and should be done after the turbos. And yes alot of ppl recommended i dont skimp on fuel. But my budget was small so really couldnt do that. But was very happy with the end result and the route i did take.

[R31Nismoid]

You cannot compare UK either btw, the dyno's are different and they also scale different.

Cams do not increase power when a turbo cannot flow anymore. Not sure who told you otherwise.

But then, if its a HUB dyno, then that explains when its reading high as its NOT @ the wheels at all.

Believe what you want at the end of the day, you'll never have the MPH to backup that power, and that at the end of the day cannot be adjusted by a computer.

[Addicted2Boost]

You cannot compare UK either btw, the dyno's are different and they also scale different.

Cams do not increase power when a turbo cannot flow anymore. Not sure who told you otherwise.

But then, if its a HUB dyno, then that explains when its reading high as its NOT @ the wheels at all.

Believe what you want at the end of the day, you'll never have the MPH to backup that power, and that at the end of the day cannot be adjusted by a computer.

I know all dynos are different, goes without saying, but thats a pathetic excuse in trying to back up your stuck idea.

Yes a rolling dyno vs a hub dyno.... i know the hub will show more in most cases. However a hub dyno is far more accurate as most people accept and some even going as far as to say "real" dyno. With the rolling dyno there are too many variables to consider and even your alignment of ur wheels to wheel weight, slip etc....

At the above tuning shop that i take my GTR to, they had a factory R35 GTR making 297kw @ wheels. (or HUB should i say...) which equates to pretty much what most guys on rolling dynos are getting and is in line with what the engine should be making too. (Funny thing is, guys on rolling dynos are posting higher figures than this hub figure for standard GTRs and yet to see a lower figure than 297kw....)

Also, how do you explain that aussie GTR making "271kw @ wheels" on power FC and exhaust in SPEED mag? Perhaps they were also using hub dyno???? Whatever the case, it is commonly and widely accepted as "wheel" figure. That power is exactly what i made on same boost levels with the same mods. Yeah the turbos rated at a certain HP and cannot flow more... so just because of this fact are you telling me an engine cannot make any more power whatsoever beyond that? After my second stage of mods, it ran on EXACTLY same boost levels, spiking up to 1.3 before settling to 1.25. There is more power everywhere across the entire rev range peaking at 310kw. But according to you that is impossible if the same size turbos are flowing the same boost it CANNOT make any more power?

Edited March 14, 2009 by Addicted2Boost

[R31Nismoid]

So you are using a Hub dyno?

If so - please do not claim 310kw @ the wheels, because it is NOT at the wheels.

Now we've established your talking HUB - then its probably more closer to 260-270rwkw which would be perfectly normal for stock turbos/injectors.

Please ensure you use the correct terms, or people with knowledge of things will question it.

And just to reiterate - HUB is not AT the wheels.

As for a magazine - do you believe everything you read? Honestly?

Also, i hope you see some sense and back the boost off down to 1bar, because if your turbo's fail, its highly likely to cost you a motor, as many before you have suffered when a turbo fails when running too hot with ceramic turbines

[Addicted2Boost]

So you are using a Hub dyno?

If so - please do not claim 310kw @ the wheels, because it is NOT at the wheels.

Now we've established your talking HUB - then its probably more closer to 260-270rwkw which would be perfectly normal for stock turbos/injectors.

Please ensure you use the correct terms, or people with knowledge of things will question it.

And just to reiterate - HUB is not AT the wheels.

As for a magazine - do you believe everything you read? Honestly?

Also, i hope you see some sense and back the boost off down to 1bar, because if your turbo's fail, its highly likely to cost you a motor, as many before you have suffered when a turbo fails when running too hot with ceramic turbines

LOL... no of course i dont believe everything in a mag, but when the journos in it tune and race cars themselves yeah i tend to believe it over other sources.

LOL, dont just say because i was using a HUB. And you've totally ignored what i said about the R35 KW figures on that hub. Also again according to you, there is NO way you can make more power on same turbo size and same boost levels by adding high lift camshafts. Because you are a "person with knowledge of things" right? And you can set everyone straight here? Im sorry but thats just bollocks.

Because that is your whole point at this stage. I would have thought the same as you did, and I also havnt seen an R32 or R33 making 300kw on stock turbo and injectors setup, i admit that. On hubs or whatever. The R34s although ceramic, everyone seems to have a higher boost level quoted for them compared to the 32/33. Even at the same tuning shop he was pleasently suprised and said that is very good power, but everything maxed. FPR, FPR... you keep going on like its a power making mod? Injectors, FPR and pump are all just supporting mods and not power mods.

Like i said most people do the turbo route and support mods and do the cams at the same time instead of adding cams to a standard setup like ive done. So to validate your comments, show me another R34 example with the same mods running 1.25-1.3bar and rolling dyno figures. Just because most examples with standard setup show under 300kw you refuse it and just put it down to "oh its just a hub figure". Also its down to the tuner. He did mention that he did lean out the A/F ratio even further, so im always keeping an eye on the knock levels. Every car is also differnt. The same day i was getting mine tuned for the first time, another black R34 Vspec with same mods, Power FC and exhaust, I was getting 270kw @ 1.2bar consistently while he only managed 245kw @ wheels @ 1.3bar, which is the normal figure everyone sees. The guy was sorta complaining to the tuner asking why mines making so much more on same mods.

Anyways get used to it, everyone knows its more accurate than a rolling dyno.

Edited March 14, 2009 by Addicted2Boost

[R31Nismoid]

Its a hub, not RWKW - as you claimed, which was wrong.

Some people quote/run higher boost sometimes for one reason only - because they are newer.

In a couple of years, you wait and see what happens. It happened to R33's, and will happen to R34's.

R34 Ceramic turbos are not 'magically' stronger than any model previous, plenty of users now have minced R34 GTR turbos, and killed motors.

Those who chance a motor are honestly stupid with the evidence around to support motor death when the rear turbo lets go (most common is the rear).

Therefore i honestly didn't read much of the rest of the post because your clearly misinformed, or you do not understand. Which it is i cannot be bothered to workout.

I know its hard to accept you can be wrong, im guilty of it all the time.

If you want proof - go to the RB26 Dyno sticky, it had 10 pages of results. Im not going to do the work for you.

I do like now though how you've stopped quoting "at the wheels"... at least something have been achieved out of it all.

[R31Nismoid]

Also again according to you, there is NO way you can make more power on same turbo size and same boost levels by adding high lift camshafts.

You are not going to make 40-50kw just from cams alone. Boost being the same, turbo size being the same - on stock R34 GTR turbos.

Its nothing short of fanciful.

[Addicted2Boost]

You are not going to make 40-50kw just from cams alone. Boost being the same, turbo size being the same - on stock R34 GTR turbos.

Its nothing short of fanciful.

No no, dont go back and changing it. You said u cannot make more power on same turbo size and same boost levels... = WRONG

It was 40kw and wasnt cams alone. Like i said, he leaned out the af/r a bit more and also i had adjustable cam gears. Also the twin turbo pipe was modified so air from turbo 2 and 1 joining is going the same direction. UK guys have confirmed about 4-5kw @ wheel increase alone on standard boost (confirmed by ST-hitec) by doing so. And FYI i have also read other people using TOMEI 260 9.15mm cams and gears getting 50hp+ increases.

Again you are wrong for saying that only 1 reason for people quoting higher is because they are new. The 34s boost higher from the factory 1bar as opposed to 0.8bar on the r32. Manufacturers always put in some 'acceptable" leeway for reliability and i dont see any reason why the R34 would had less. Why would nissan make a turbo thats about to break on FACTORY boost setting? If anything they addressed shortcommings of the 32 such as they did with starvation etc...

As you know the 34s are Ball bearing, meaning easier to spin up. Less force is required to get it boosting, perhaps thats why you find the shafts snapping on the earlier models. So other than your basic knowledge that it breaks because its ceramic, why does it break? ultimate spin speed, spindle/shaft acceleration? which the ball bearing will no doubt help.

Anyways, yes i did check out that thread... looks like most are R32/R33, but theres one R32 using a R34 engine on pretty much similar mods as me, but importance on him having STANDARD INJECTORS, STANARD AFM, INTERCOOLER etc, making 300kw @ wheels on 18psi (1.2bar) on a Dyno Dyanamics. IF you dont know already, its a ROLLING DYNO... hahaha...

Mate, the thread you were pointing me to just proved you wrong.

Edited March 14, 2009 by Addicted2Boost

[R31Nismoid]

No no, dont go back and changing it. You said u cannot make more power on same turbo size and same boost levels... = WRONG

Please quote the words that say this, because unfortunately, i haven't.

What i did say however, is that cams wont increase power when the turbo's are at their airflow limit. You simply cannot make a turbo flow more air.

Cams would alter the power range, which is a given.

Like I said, sometimes it just sucks to be wrong. And in this instance, you are.

When you have the MPH to backup your claims of 300rwkw on stock turbos, ill happily admit i was wrong.

Until such a time, im not going to believe it for a second. Nor will most of the other people here who've been around GTR performance for many years.

I await your run @ the strip, and not some result that comes from a magazine ok?

[Addicted2Boost]

This has made me look into rolling dynos a bit more actually. Found this

http://www.gtr.co.uk/forum/14053-dynapack-...d-straight.html

So even with NISMO, APEXI,TRD, Trail etc... using it, like i said these days its commonly referred to as @ the wheels. As its more accurate.

Dispite this have found numerous examples of power measured at the "wheels" on a rolling dynometer with the kind of power equating to mods i have been standing by.

http://www.gtr.co.uk/forum/109582-449-9hp-...ard-turbos.html

Making 260kw @ wheels without even an aftermarket ECU or boost controller or cams etc.. Factory turbo and injectors @ 1.1bar.

Been through 2 pages of the RB26 thread on here and already found 2 that are running almost or just on 300kw @ wheels on a Dyno Dynamics a rolling dynometer.

End of the day mate, i have enough information provided by various sources to base my beliefs and obviously you do aswell. But I dont think im wrong at all (backed up by the thread you pointed me to) and I believe you are wrong on many counts throughout this thread on lots of points. I dont need to run on the strip as i dont have anything to prove. Whatever the result theres no convincing someone like you. You go on believing what you will.

About the turbo, im not putting words, that is in-affect what you are saying. No more power at same boost levels. Whats the differnce to the same turbo at its airflow limit as opposed to airflow at 1.2bar. Was i running them at like 2 bar outstripping its efficent operating airflow? Like i said i ran the same boost level of 1.2-1.3bar. Can you not read? Its the same AIRFLOW. There are heaps of ppl running 1.3-1.4 bar on stock turbos with upgraded steel shafts or N1 turbos. So it certainly is not way past its efficiecny/airflow limit at 1.2bar. Its about air efficency getting into and out of the engine.

Again a rolling dyno has too many variables (even tire pressure and or alignment can give a differnt power figure) and a hub dyno will be closer to the wheel figure. But just for my interest i will run my S14 on the hub dyno at ST HITEC to see the differnce. It made 210kw@wheels on a Dyno Dynamics rolling dyno a few years back... So you are saying i should expect around 250kw@hubs?

It perhaps will be more, but not by 40-50kw....

Edited March 14, 2009 by Addicted2Boost

[R31Nismoid]

This is not an argument about accuracy of hub vs chassis, or using silly comparo's of N1 turbos (which use different wheels, so therefore totally irrelevant)

Like i said, when you run the MPH (or any stock turbo GTR for that matter) that will equate to 300rwkw... ill eat my words.

Recently we had a thread in the FI section about a car making "X" rwkw, went to the strip, didnt run the MPH. Among some too/fro turns out there was something wrong in the end, same principle applied here. Run the MPH to backup the claim, then we see.

Post up and ill eat my words no issue in the world.

But... The fact is you wont run at the strip, wouldn't run the MPH to back it up (which is probably the reason you wont run it), says it all at the end of the day.

[justin911]

hehe need another 7-8 pages till this one will be as funny as that other thread ash