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Hey people I have recently been posting a few threads needing help with my rb25 trying to find a cause of my problems with bad idle and smoke. As a lot of people said it was my intercooler pipe that was just blown off. So i just want to say thanks to everyone here for the help and advice on what to do :) so I have it back together now with a highflowed turbo but no supporting mods. So I just want to know if im going the right way with this afyer reading a few threads I belive the best thing to do for a few extra wasps and to safely run the turbo at higher boost will be,

~ 550cc injector upgrade

~greddy ecu (cant remember specific product)

~3" turbo back exhaust

Will I need a bigger intercooler? Still a p plater so I can't go front mount

And of course get it a good dyno tune.

Unless I missed anything that is what im planning on getting done.

Does that seem like an alright path to go down? Not looking for crazy power either.

Any help is aporeciated. And thank you again to the people of SAU :)

Fuel pump.... very important. 550cc injectors will be heaps.

See if you can use a nistune board....

If you drive a series 1 stag then get a series 2 neo side mount intercooler (good for 220rwkw). There was also a side mount intercooler Trust made that was thicker again, but hard to find now.

Start looking at trans supporting mods if it's auto. Trans cooler, shift kit etc...

Yea it's a series 2 with the standard side mount cooler. Saw a thread about fitting a gtr side mount for better xooking and a stock look as well and was thinking of doing that upgrade. Would a gtr fuel pump be alright? Or should I go aftermarket like I will with injectors? Didnt even think about trans oil coolers yet as im aiming for relatively low key power just so I can keep it as a daily without getting harrassed too much

OK so you have a S2 - just get a Nistune chip for your ecu. You already have a decent trans cooler from stock. There is no bigger Nissan side mount but options include Trust or bigger and still more rare an ARC. And get on to the Stagea section - there is a wealth of information there.

Side mounts ...all will fit your car but the non stock ones are hard to find:

Stagea S1 (R33) 210 x 185 x 65

Stagea S2 (R34GTT) 210 x 225 x 80

Trust 195 x 140 x 100

Nismo 200 x 230 x 100

ARC M075 WGNC34G 75

ARC M105 WGNC34G 250 x220x 105

ARC M075 ECR33G

ARC M105 ER34G 250 x 220 x 105

I have a s2 stag.... any more than stock power I would highly recommend an additional trans cooler. Any more than the stock turbo can deliver, seriously consider a shift kit (MV Auto).

I have a deatschwerks fuel pump (kudos motorsport) was factory style drop in fitment... excellent pump.

I have a return pipe cooling pro stealth fmic. I painted the clamps black too.... not noticeable from the front and uses stock pipework under the bonnet. Especially with a stock airbox under the bonnet it all looks factory.

Again, i have a nistune board installed and tuned for 12psi.

All these mods (and a full 3" exhaust) were very simple and produced great results... I picked up 30rwkw through the mid range and 23rwkw at the top end, as well as a heap of torque everywhere.

Be carful choosing a turbo. Stagea's are quite heavy, so lag will be amplified with a larger turbo.

You'll need a z32 AFM if you go with a highflow.

Cheers

Justin

  • 3 weeks later...

Always been kind of worried about the front mounts as they'd have to be spot on to be stealth wouldn't they? How does it run the stock piping as well? I ended up goin with the high flow turbo now im just waiting on rego before I can take it to sone tuners and shops to have a proper look at everything before I go for power. exhaust will be getting done before the tune as well with some nice big mufflers. Thanks for that reply :)

P.s sorry for posting in a dead thread

FMIC is easy enough to be stealth. Just paint it black, don't drive like a knob. The return flow coolers use the stock piping in the enigne bay, passing through the stock holes in the guard, but below there the pipes are different. But that's out of sight, out of mind. If a cop lifts the bonnet, he sees the stock piping going to the stock location. It doesn't scream "FMIC" the way that modified pipework running across the engine bay does. It also means no holes cut in the car, which also tends to scream "defect opportunity" to a certain type of cop.

  • Like 1

Ahk maad, gonna have to look into a front mount. This forum is gonna cost me money with all the ideas everyone has haha

No kidding! I paid $4,500 for my bog standard RS4T - I've spent more than 3 times that much on it in the last three years.

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