Jump to content
SAU Community

Recommended Posts

mines a BLITZ SBC-R DUAL Solenoid EBC - the car hadn't been modded since 2007 until i got it so these ebc's might be a little outdated

and the percentage being the solenoid duty makes much more sense haha

although im still not too sure how id want to set mine up,

so if i had the solenoid duty percentage turned up to 100 does that mean that the full boost would be controlled by the ebc VS say 50 or 0 percent where it would he half half or 0 being full stock control?

No, 100% would be the solenoid never opens, the wastegate actuator never sees pressure andbthe turbo will free boost until it runs out of puff, or R&R or go bang.

0% is solenoid fully open and boost pressure is controlled by wastegate only.

Assuming its similar to mine.

what would be the best way to set it up / control it or does it vary depending on the cars set up?

so far 0 has been the cleanest throughout the rev range, assuming thats because its controlled by the waste gate only but it feels like the cars lacking power

when on 40 % their is definitely a power increase but sounds like surging when i release the throttle and dont change gears otherwise when changing gears it will blow off fine

and their is the occasional boost spikes and sometimes cuts off ect

so im pretty hesitant to go any higher then 40% at the moment as i dont really know what im doing, hoping to get it dynod later this week by someone whos had some experience with GTRs and EBCs

found a leaky injector and vacuum leak this morning fixed them both and now the car is running mint, much more responsive and everything is functioning as it should.

i have the solenoid duty on the EBC turned up to 40 currently and its holding boost fine, stock blow offs sound pretty shit so wouldn't mind changing them in future.

also have a dyno session booked in for Thursday so that will give me some power figures and get the tune right hopefully

IMG_5169_zpsdfo4kqas.jpg

  • Like 2
  • 3 weeks later...

iphone quality for life haha,

ive had a couple of issues lately, firstly the original place i was going to get dynod messaged me on the day of just before i was about to drive 2 hours to their shop to let me know they they didnt have a dyno but for some reason forgot to mention that when i booked in a week before specifically saying i need a dyno, ditched them found a place a little closer to me for the following week but half way their blew a turbo (big bang and a huge cloud of black smoke out the exhaust, now car wont boost and theirs a rattle from inside the cat) getting the exhaust removed on Thursday to check it is the turbos and if i need anymore parts before i start ordering some goodies.

i only just fund out that i shouldn't run more then 1 bar boost on the stock turbos and its been on 1.2 bar the whole time ive owned it plus the dodgy injectors had it surging and peaking to over 25 psi at times so that would have contributed to their wear i guess.

so far the plan is to upgrade to

- Garrett GT2860R-7's (HKS GT-SS) or maybe -5's

- 550cc injectors

- 2 x Greedy type FV blow offs to replace the old stock ones

- might end up replacing the stock radiator and get a bigger front mount to as their on my list to do

if anyone has some insight on what parts would be a good option please feel free to suggest

  • 5 weeks later...

finally have all the replacement parts ready to go, ended up with


- Garrett GT2860R-7's with new gaskets and braided lines


- Bosch 1000cc Injectors


- Tomei Type-L fuel pressure regulator


- Billet Performance Fuel Rail


- 2 x Greedy type FV blow offs


- Apexi front split pipe


as well as


- torque splitter


- hicas lock bar


- roof lip



IMG_5306_zpsaukgg5kr.jpg


  • Like 2

well considering i was having issues with the stock 25 year old injectors and one was pissing fuel over the engine i thought i would be wise to upgrade and why not go for 1000cc instead of the 550cc ones when the price difference is not much more and they will be one of the things that max out later if i go for bigger figures? plus all the other fuel bits came as a package that was not much more then buying the injectors alone.

whats wrong with the blow offs? the stock ones are 25 years old and might have been failing so i dont see how these could be worse?

I have a theory that you match the injector size to the power output - because the more oversize the injector is the harder it is to tune. But other people think otherwise.



As for the Nissan blow off valves they are as good as you'll ever need. What makes you think they might be failing? Also if the GReddy ones vent to atmosphere they are going to upset your MAF's on the assumption you are using them.


Edited by djr81

the mechanic that i have tuning it mentioned that they may have been part of my previous issues when i had it with him last, can you give me a legit reason why not to run the new blow offs besides the nissan ones are fine, i wouldn't mind a different sound as well.

and the plan with the tune once all this was installed is to try crack 400hp and go till afms or fuel pump maxs and then back it off a bit, if i went 550cc then they might have maxed first

mines a BLITZ SBC-R DUAL Solenoid EBC - the car hadn't been modded since 2007 until i got it so these ebc's might be a little outdated

and the percentage being the solenoid duty makes much more sense haha

although im still not too sure how id want to set mine up,

so if i had the solenoid duty percentage turned up to 100 does that mean that the full boost would be controlled by the ebc VS say 50 or 0 percent where it would he half half or 0 being full stock control?

There are two settings on the boost controller. The output (so boost level) and the gain. The gain is adjusted differently to the output but is inversely related to it - so high boost, less gain is the rule of thumb if I remember correctly.

See here.

http://www.blitzpowerusa.com/techsupport/pdf/sbc_i-d_iii.pdf

the mechanic that i have tuning it mentioned that they may have been part of my previous issues when i had it with him last, can you give me a legit reason why not to run the new blow offs besides the nissan ones are fine, i wouldn't mind a different sound as well.

and the plan with the tune once all this was installed is to try crack 400hp and go till afms or fuel pump maxs and then back it off a bit, if i went 550cc then they might have maxed first

Well if its for a different sound or whatever then I suppose why not but its usually more money spent for no performance gain. What issue does your mechanic think relates to the bov's - its not clear in the posts.

You will max your afms next I would think.

he said it may have been constantly recirculating or something but that was when we weren't 100% sure if i had blow a turbo or not, the money has already been spent and im not sweating it so i dont see why i wouldn't use them, plus its just one less 25 year old part on the car that could fail with age, thats how i look at it.

and yeah they probably will, can you remember off the top of your head where gtr afms max out? and any idea where a 255 lph pump would max

the mechanic that i have tuning it mentioned that they may have been part of my previous issues when i had it with him last, can you give me a legit reason why not to run the new blow offs besides the nissan ones are fine, i wouldn't mind a different sound as well.

the fact that we have all seen many Gtr make well over 400kw at the wheels with the factory blow off valves is a pretty good reason to not waste your money replacing them

Can your "mechanic" prove they are leaking or taking a stab in the dark and spending your money in the process?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • I am getting the same issue. Did you resolve it? I just got it after installing my new super coppermix and literally the same issue, new fork, new 18mm carrier, release bearing that came with the kit and replicated the exact same sound. 
    • If you like - I have the STL files so I can email em. There's a couple of gotchas (i.e the holes are not threaded so you might need/will need) to utilize some M3 melt-in threads for some of the points. However if you want to be super accurate, and are willing to remove your calipers and your SHOCKS it's a really good tool. You also might need to scale the part that measures the tyre width a bit wider. It defaults to a 7.5in tyre and I mean who is running that. Luckily with the magic of CAD this is very easy to rescale.
    • jeebus. glad you weren't under it while performing the stunt. Also thanks for the link to the wheel measurer, exactly what I needed
    • In the older stuff there were very significant differences 2wd to 4wd, for example Stagea had strut front end for 2wd and double wishbone for 4wd so it was not minor to swap. From poking around the 2wd v37, it *looks* like it might be more possible; some of the parts specifically have "2wd" stamped on them which suggests the platforms are more similar. You'd still want to start with a 4wd half cut to swap stuff from though. I'd suggest if you don't have a tune on the ECU you don't really need one on the trans either. Throttle mapping is in the ECU side (and you can always use a Roar Pedal if you want the throttle to actually respond to your foot), and really if you are happy with the stock power you probably accept the stock trans behaviour too....its all made to be "sporty" not racey.
    • So, updates. I have not washed the car since it came back from Tassie. I've driven it around a bit but not got around to actually sorting it out. I DID raise it because I cracked the rear bar leaving a hotel which was very distressing. Interestingly, the car drives more compliant now that it's raised a fair bit (5mm front, 15mm rear). Also noticed that my FR height was 10mm lower than FL. So that's now sorted out, too. I also bought this and had it printed: https://www.etsy.com/au/listing/1576422240/wheel-and-tire-fitment-tool-universal?ref=shop_home_feat_1&dd=1&logging_key=08f604d9fa4cc383550ba985e6ac85cd5cac7fbb%3A1576422240 Now, if I was smart I would have taken my brake calipers off to actually use this correctly but it was evident enough to me that in the region where the caliper was... there was nothing to hit suspension/guard/arm wise. So I'm going with "it'll be fine" after using the tool to hopefully very precisely measure the wheel clearance. Also while doing this, I had the very VERY bad idea of jacking one of the wheels/suspension arms up while the rest of the car was on jack stands. I did this to see how the arm would travel. This all was well and good until the car slid off the stands and went through a fence. So don't do that. Incredibly nobody was hurt and there was only minor damage to the rear bumper as the car didn't have far to slide, and had 3-4 wheels on it. The only damage turned out to be the fence itself which was easy to fix, and a little bit of damage to the fibreglass rear bumper trim. I had already planned to try a touch up paint kit to fix the time I drove into my garage door to see if it'd help in the interim before I get it fixed properly. I used the Dr Colorchip kit after looking online and seeing everyone talking about it. Yes it's made for chips and not huge broken missing pieces and I'll be 500% recommending it for stone chips after using it for stupid things like me. This took about ... 10 minutes and looking at the half assed photo the 30 second job I did on the bumper corner was almost perfect just by using the tiny little brush and painting it in. The sealact stuff to remove over-painting is really useful, so if/when I do it again I'll likely slather the touch up paint well over it and then clean it up with the cleaning solution. The wheels should arrive in a couple of weeks. I am still kinda confident after doing a stupid amount of measuring (and borrowing a set of 18x10.5+15) that they will not fit because I overlooked something, somehow and flew too close to the sun. ALSO R34 GTR guard liners do not fit on a GTT. I bought the undertray brake duct guides and had the wonderful problem of them not fitting my intake, my oil cooler and the liners themselves were even worse. Attempting to fit them won't work in general - You would have to cut them up as another poster mentioned as the bodywork is different on the GTT. At least I can try to resell them. So instead of cutting those up, I cut up my old already-cut-up GTT liners and extended them by using some PP plastic and drilling some 8mm holes for some nissan clips for the 'extra' bit. Because I was happy to cut them I was able to mount them pretty damn forward so I now have some semblance of guard liners, and the brake vents seal the bumper from the bottom. It sort-of-looks like this, to give some idea - If you look at the GTR and then the GTT this is when I realised that I needed to seriously measure as the inside of the rim area is entirely, entirely, entirely different and could not take any internet measurements for granted.   
×
×
  • Create New...