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R33 Gt-r - Best First Mod Option?

Deziner

By Deziner,
in Engines & Forced Induction

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Deziner Mentor

Deziner

Posted
Posted

Hi all,

Just wondering what everyone thinks the best first performance mod is for a R33 GT-R?

I know with my XT Forester the single best mod performance wise was swapping the stock exhaust system for a 3" TBE.

Would you say the same for the R33 GT-R?

Cheers.

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XKLABA Grand Master

XKLABA

Posted
Posted

remove boost restrictor,good air filter, whole exhuast with good metal cat, cam gears, boost controller max 18psi on stock comp and injectors, then comp and z32 afms, then injectors and fuel pump, turbos, cams and full engine build, i've done or in process of doing in this order

Deziner Mentor

Deziner

Posted
  • Author
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Thanks guys, much appreciated.

Some of those will have to wait until the bank account recovers from buying the car! LOL

Just curious, will I notice much of a difference if I remove the boost restrictor now?

Also how safe is this given the ceramic stock turbo wheels? And do I need a boost gauge (other than the stock one) and a manual boost controller?

STATUS Grand Master

STATUS

Posted
Posted

from memory (tuned one awhile back and was not to far off one with 3" cat back) the std 33 GTR exhaust was not too bad at the power levels these make (JDM cats are good, compliance cats are not) boost restrictor removal and tune if your not into more noise from the rear.

Brandon Veteran

Brandon

Posted
Posted

Removing the bung improves your air intake... I dont know how is that bad. Plus you can hear the induction and bov sound more and its legal!

But anyway, like everyone else said. Get someone good to look after your car if you're not very mechanically minded. Probably good to get the exhaust system done first (front pipe, cat and catback) and ecu + boost (around 12-14psi should be fine on stock turbo). Read more on the force induction section and you'll find most of your questions already answered.

mattyneweraimports Proficient

mattyneweraimports

Posted
Posted

totally depends on budget

ensure your brakes are up to scratch first, & an oil change & spark plugs

ensure the HICAS fluid is also correct.

next i would

(assuming all is stock)

replace the factory intake - replace with ARC if budget allows or Apexi.

replace factory exhaust / muffler withi something like HKS Hi silent if your wanting a quiet muffler or blitz nur if not

take out the cat , and replace with decat

boost controller run at 1bar.

then dyno run to ensure all is well

fuel pump woudl also be on my agenda

Deziner Mentor

Deziner

Posted
  • Author
Posted

It seems when I am reffering to the boost restrictor others are talking about something to do with the airbox etc.

I am talking about the boost restrictor that is in one of the vaccuum hoses and is marked by the yellow line. It restricts boost to 9psi from the factory and when removed raises the boost to 14psi.

Where is the HICAS fluid located? The manual that came with the car is pretty crap, looks like omething that did not come from the factory.

bigmikespec Veteran

bigmikespec

Posted
Posted
Where is the HICAS fluid located? The manual that came with the car is pretty crap, looks like omething that did not come from the factory.

There is no HICAS fluid on a R33 or R34 the HICAS rack is electric not hydraulic. And do not waste your money on replacing intake pipes... get everything fixed and ensure everything functions correctly. That will cost you enough before you start spending it on handling better and going faster!

R.3.2.G.T.R Grand Master

R.3.2.G.T.R

Posted
Posted
Hi all,

Just wondering what everyone thinks the best first performance mod is for a R33 GT-R?

I know with my XT Forester the single best mod performance wise was swapping the stock exhaust system for a 3" TBE.

Would you say the same for the R33 GT-R?

Cheers.

dont do it, its a slippery slope :blink:

i would personally get everything checked over, stick it on a dyno and check afr, compression if not already checked, service and replace anything thats worn like pads, rotors, tyres etc, after all that, you have a good base to start doing lil mods, i wouldnt take the restrictor out if u running stock turbos, its still a nice car, enjoy it and do the easiest and cheapest mods first so your wallet doesnt have a heart attack

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