Modifying Gtr

[GTSBoy]

The point of it is that Nissan Japan sold the GTR within the existing "Gentlemen's Agreement" that said no manufacturer would release a car with more than 205kW (or 206, or 207 or 208, depending on who you listen to). The restrictor was put in the boost control system to set the boost to a level that would stay pretty much within the gentlemen's agreement, but was trivial to remove and make GTRs close to unbeatable on the street (which was one of their highly desirable aims, of course).

The ECU will happily run the engine with that much boost, but it wil be richer and more retarded than if it was tuned properly. Rich and Retarded is a little safer on the engine. Well, the richer part certainly is. Retarded can be less safe sometimes. But I digress. Yes, for 15 years after the release of the R32 GTR people would simply pull that restrictor out and just drive it round. No problem.

[0zhiph0p]

Sweet so it will be ok till I get power fc and tune, does anyone have a happy snap of where this little sucker is located or will a search on the forum be easy enough?

[XRATED]

...seriously, have a look into a nistune. half the money of a PFC.

[GTSBoy]

If you couldn't google up a howto on pulling that restrictor in less time that it takes to post your last question, then I'd be extremely surprised.

[0zhiph0p]

So I think I took the right line off and looked in the hose and can't see anything, how far down will it be? I'll upload a pic maybe to make sure I have the right hose. Maybe previous owner already removed it

[portaz]

It usually has a coloured band around it but most are already removed what does you boost gauge go up to?

[Blackkers]

I can't tell you how pleased I am with a Nistune ECU. Set and forget. exactly like hondata for hondas but probably a bit cheaper

[Count Grantleyish]

It usually has a coloured band around it but most are already removed what does you boost gauge go up to?

This, the colour is yellow.

[0zhiph0p]

[sleptema]

Yup sorry, wrong way around in my head haha.

It's actually on the drivers side in the gtr.

[Count Grantleyish]

What does the boost gauge read? Should be .7kg/mm from memory (been a while since I've had a gtr).

[0zhiph0p]

The boost gauge just goes to the top 7+

On a side note/question I started my car this arvo after being parked for 1 hour maybe and it just stalled then I started it again and the idle was

Real rough like it was going to stall but I kept the revs up a bit, this has also happened once before any ideas what it may be?

Once driving its fine both times have been on startup

[Manuel Kasko]

Hmm could be a loose earth or even dirty AFM

Is there any particular mods like a vent to atmo BOV

[0zhiph0p]

Nah just stock bov, could it be a fuel pump related problem on its way out not pumping properly, although while driving its fine

[Hadouken]

Afms/cas/dirty spark plugs/vacuum leak

[sleptema]

Hmm could be a loose earth or even dirty AFM

Is there any particular mods like a vent to atmo BOV

The only way a bov would effect the car on idle would be a seriously rooted spring, and the problem would a hell of a lot more noticeable during boost, in for form of no boost.

Did the splutter only happen after stalling? Or does it just randomly happen on startup?

[0zhiph0p]

Yer it is randomly on startup, it stalled then when I started it again it spluttered a bit and started dropping revs but I gave some aceleration to bring the revs up for a couple of seconds then it was ok held fine on idle

[Anfanee]

Sounds like you have Partially blocked injectors or your coilpacks are on the way out. Sounds more like Fuel to me though..

[Ben C34]

The only way a bov would effect the car on idle would be a seriously rooted spring, and the problem would a hell of a lot more noticeable during boost, in for form of no boost.

Did the splutter only happen after stalling? Or does it just randomly happen on startup?

factory bovs are slightly open at idle due to the manifold vacuum acting on them,(and don't leak under boost) so I would assume some after market bovs could be the same.

[Ben C34]

Definitely before you start modifying your car sort out the running issues.