M35 Mod "path"

[Sunkist]

Perhaps get the injectors done at the same time? 200 achievable then?

That would be about the limit of my budget at the moment.

yeh you should be able to, then you'll need a fuel pump.

and dunc said - the suction pipe with restrict you to 176kw to be exact.. only proven one is scotts so far.

intercooler i think is good for 190-200kw

and if your tuner has not touched a VQ25DET before, i would not go to him unless hes VEEEEERRRRYYYYY Reputable. the eManage is currently the only proved EMU that works, and is pushing the numbers. the fact he is dead against it for our car kind of is a worry for you lol

[bigkevracer]

Seems like a few tuners are against the eManage and similar addition/subtraction piggybacks. But if it works, why stuff around?

The tuner I was planning on using is dead against the eManage, but says he can do it (but doesn't know how long it'll take... hmm...), but he's recommending a new Haltech product that works with a 350Z. Every time I ask for a guarantee from either him or Haltech there's nothing but silence. The only other one you can use is a HKS Fcon, but they're much more expensive and even harder to find a tuner for.

Not sure if Scott's is the only proven suction pipe Aaron, Dolphin might disagree, but good luck getting one

Also I wouldn't go to a normal exhaust place and get an exhaust made. I'd either go through someone who's keen on doing the development and getting it right (which if you're the guinea pig might mean a few visits, as is my case), or get a Jap cat back and local dump/front pipe. My local exhaust sounds absolutely awesome, but is way too loud and has a drone. Hopefully I'll be going in shortly to get it rectified with a larger resonator.

[scotty nm35]

Ryan, the Dolphin intake doesn't replace the lower restrictive part of the intake only the rubber part afaik.

I think the stock injectors, suction pipe, cooler etc will allow perhaps 190kw on 98. Any more and there are big changes to be made.

[bigkevracer]

That would make sense, it did look kind of weird.

Where did you get your 1000cc injectors from Scotty? Were they plug and play (with the exception of your nuclear engineering upgrade for the cradle and fuel lines)?

[scotty nm35]

Yep, plug and play as in they supply new plugs. Injectorsonline. I can probably get a better price than they usually give, let me know.

[andy65b]

Whose making the custom TBE? Any reason you're not going for a tried and tested JDM product? Anticipate drone.

I have a locally made exhaust and no drone.. just make sure you have a reasonable sized mid muffler.

[Commsman]

Ryan, the Dolphin intake doesn't replace the lower restrictive part of the intake only the rubber part afaik.

I think the stock injectors, suction pipe, cooler etc will allow perhaps 190kw on 98. Any more and there are big changes to be made.

Yeah, Dolphin intake replaces just the rubber top part. I guess it will stop any suck in, but bottom is still restrictive.

There was a guy on here that posted he had his dynoed at 220kw, with standard injectors & intake. May have been a case of a slightly optomistic dyno perhaps....

Re injectors, has anyone found that running seriously large ones (eg 1000cc) makes tuning for light loads more difficult? And surely economy would be out the window, right?

I'm not convinced that one needs to go that big to achieve good power (and driveability & economy). I have read of cars (similar displacement as ours) making more power with 500cc injectors so there must be enough fuel flowing. Either that or they are more efficient at burning it.

[ArdentEagle]

yeh you should be able to, then you'll need a fuel pump.

and dunc said - the suction pipe with restrict you to 176kw to be exact.. only proven one is scotts so far.

intercooler i think is good for 190-200kw

and if your tuner has not touched a VQ25DET before, i would not go to him unless hes VEEEEERRRRYYYYY Reputable. the eManage is currently the only proved EMU that works, and is pushing the numbers. the fact he is dead against it for our car kind of is a worry for you lol

No one will touch emanage over here in W.A.

The tuner is very reputable and a Nissan specialist but I think mine will be the 1st VQ25DET. He has done a few VQ30DET engines. Basically he's the only tuner who's willing to take it on.

He seemed very confident with the exhaust after looking at it, he wanted one larger muffler and a varex exhaust put on.

Ok so we have:

TBE

Piggy back ECU also boost controller 19 pst

Suction pipe

Perhaps cooler depending on funds

Should = 190awkw

Important accompaning mods:

Wire cut mod for throttle restriction

1mm to 2.5mm Banjo mod

Anything else I've missed?

[scotty nm35]

Perhaps 2mm on the banjo, just in case...

What worries me is which Haltech you are going to be using... You will be paying for his steep learning curve but I dont think you have much choice. Perhaps you can get some sort of guarantee out of him, so if it doesn't drive properly he wont charge you? It was his call to go with the Haltech after all.

[andy65b]

Anything else I've missed?

With that sort of power I hope you are looking at some braking and suspension mods. This car does have good chassis balance but is under braked especially once you start upping the power.

[Sunkist]

Seems like a few tuners are against the eManage and similar addition/subtraction piggybacks. But if it works, why stuff around?

The tuner I was planning on using is dead against the eManage, but says he can do it (but doesn't know how long it'll take... hmm...), but he's recommending a new Haltech product that works with a 350Z.

Not sure if Scott's is the only proven suction pipe Aaron, Dolphin might disagree, but good luck getting one

lol have you told him we dont have a 350z?

and below as scott and the commsman said , its only the top rubber bit

Ryan, the Dolphin intake doesn't replace the lower restrictive part of the intake only the rubber part afaik.

I think the stock injectors, suction pipe, cooler etc will allow perhaps 190kw on 98. Any more and there are big changes to be made.

There was a guy on here that posted he had his dynoed at 220kw, with standard injectors & intake. May have been a case of a slightly optomistic dyno perhaps....

lol hmmm

No one will touch emanage over here in W.A.

The tuner is very reputable and a Nissan specialist but I think mine will be the 1st VQ25DET. He has done a few VQ30DET engines. Basically he's the only tuner who's willing to take it on.

He seemed very confident with the exhaust after looking at it, he wanted one larger muffler and a varex exhaust put on.

Ok so we have:

TBE

Piggy back ECU also boost controller 19 pst

Suction pipe

Perhaps cooler depending on funds

Should = 190awkw

Important accompaning mods:

Wire cut mod for throttle restriction

1mm to 2.5mm Banjo mod

Anything else I've missed?

that 190 i think will be depending a lot on your injectors, as in you will be running 90%+ duty cycle, which isnt ideal, but i guess a few on here are doing that and havnt had a problem yet

With that sort of power I hope you are looking at some braking and suspension mods. This car does have good chassis balance but is under braked especially once you start upping the power.

lol yeh i should probably get around to doing mine, just becoming really lazy

[ArdentEagle]

Perhaps 2mm on the banjo, just in case...

What worries me is which Haltech you are going to be using... You will be paying for his steep learning curve but I dont think you have much choice. Perhaps you can get some sort of guarantee out of him, so if it doesn't drive properly he wont charge you? It was his call to go with the Haltech after all.

Good call. He seems like a reasonable bloke and I don't think it'll be a problem getting him to guarantee his work. I'll find out which Haltech and get back to you mate. 190 at least is reasonable, I think you said they're about 140 stock so it should feel a lot quicker than now.

[ArdentEagle]

With that sort of power I hope you are looking at some braking and suspension mods. This car does have good chassis balance but is under braked especially once you start upping the power.

For now around 190 awkw it looks like. I'll look to save more money for the next lot of major mods.

[bigkevracer]

The tuner I was going to use was recommending this: http://www.haltech.com.au/index.php/product/platinum-sprint-series/platinum-sprint-500 Can't imagine your bloke recommending any different for $2.5k, but that is $1.5k worth of setup and tuning...

Leon, isn't the 1000cc injectors really only so you've got headway later on, particularly for E85? I can't imagine they'd be necessary for my short term setup, but long term they should be, and when E85 becomes more common in SA I'll go that way.

And as Andy said, some good suspension and breaking mods; set of BCs, Whiteline sway bars from Daleo, and either some decent pads and slotted rotors, 350Z Track Brembos or R32 GTR Brembos.

[dasic1]

What are the problems with different computers not working?

[pipster11]

correct me if im wrong guys but

the vq25det runs a nissan/renault secret squirrel super-dooper ecu that makes a 350z ecu look like a calculator

also, heaps of things are run down a CAN line (like a lan cable for cars) so you can't easily chop wires and intercept things

[Daleo]

For now around 190 awkw it looks like. I'll look to save more money for the next lot of major mods.

A 50awkw increase is nothing to sneeze at; that would be a solid start IMO.

Obviously, the little devil starts whispering in your ear, but given a couple of NM35's have run 14.3- 14.4 sec quarters with an exhaust & air filter; that would equate to a very low 14, possibly high 13 sec quarter mile.

[Jetwreck]

Just an FYI on the Haltech....I had the Interceptor......I battled with it for a good six months......in the end I took it off and my car made more power with the stock ECU.

Jus so you know.....even though you have a piggyback(any piggyback) the standard ECU will try to tune around it....and quite often succeed!

[Sunkist]

Just an FYI on the Haltech....I had the Interceptor......I battled with it for a good six months......in the end I took it off and my car made more power with the stock ECU.

Jus so you know.....even though you have a piggyback(any piggyback) the standard ECU will try to tune around it....and quite often succeed!

Lol

[bigkevracer]

correct me if im wrong guys but

the vq25det runs a nissan/renault secret squirrel super-dooper ecu that makes a 350z ecu look like a calculator

also, heaps of things are run down a CAN line (like a lan cable for cars) so you can't easily chop wires and intercept things

Pretty much right.

Also the ECU controls the gearbox, throttle and accessories, so you can't just ditch it for a standalone without going to a cable throttle like Scotty has tried.

AFAIK the VQ25DET was only used in the NM35, so people aren't in a mad rush to develop piggy backs etc for them.

I'm convinced that Haltech would be a better choice... if it was guaranteed to work. But there are no guarantees, so go with what you know works!