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R32 Performace Help - Rb Engine Noob

ae86 boy

By ae86 boy,
in Engines & Forced Induction

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ae86 boy Enthusiast

ae86 boy

Posted
Posted

hey guys just bought myself a cheap r32 to get back into drifting with

have been an sr20/silvia man up till now so know little about whats the best way to go about modding a rb20det, however im guessing the basics are much the same to an sr

not looking to spend much $ at all

all the car has atm is a fmic and zaust and boost tap currently running standered boost atm.

ok so question #1 - are stock r32 fuel pumps as shit as stock silvia fuel pumps, aka soon as u wind up the boost they lack pumping power, how much rwkw can the stockers hold?

#2 2nd hand r33 turbos are cheap as chips, is it worth bolting one on over the standard 32 turbo?

#3 without a after market ecu/tune what is the max but safest boost level to run? assuming i have a r33 turbo on the car

#4 are there any cheap piggy back/ ecu retunes that are popular with rb's

#5 with a tune and r33 turbo whats the likly rwkw i will see? is 180 possible? if so at what kw do the standard injectors need replacing

thanks heaps looking forward to your responses :P

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bubba Grand Master

bubba

Posted
Posted (edited)

1. Yes. How long is a piece of string? put a decent (read: Bosch minimum) fuel pump in.

2. Yes. Good bang for buck. Untuned, I got an extra 50rwhp and more fun in the top end.

3. Wind it up until it pings. With the stock RB20 turbo my engine handled 14psi and made ~200rwhp. With the RB25 turbo is would only take 12psi (14psi and she pinged) but made ~250rwhp.

4. Plenty, but better off saving up and Nistuning it.

5. 180rwkw with a tune is easy, mine was mkaing 183ish (~250rwhp) without a tune. Stock injectors should be good for almost 200rwkw.

Edited by bubba
R TUNE Mentor

R TUNE

Posted
Posted (edited)

I still have the stock on mine and its going fine at 140rwkw but for peace of mind and at only a few hundred buckes go the 040.

#2 Yep do it, if you can get the 45v2 (the series 2 turbo)

#3 after putting my rb25 turbo on i have 13:1 (dangeresly lean) AFR untill 5000 rpm were it fuel dumps and the AFR become 11.5: (what you wont the whole time) also i gained 2 rwkw (rb20 turbo at 14psi) with the boost set at 5psi.

#4 go with nistune ist about $480 plus tune.

#5 im hopeing for 160-170 rwkw at 12psi.

Edited by redliningr31 skyline
Super Drager Mentor

Super Drager

Posted
Posted
1. Yes. How long is a piece of string? put a decent (read: Bosch minimum) fuel pump in.

2. Yes. Good bang for buck. Untuned, I got an extra 50rwhp and more fun in the top end.

3. Wind it up until it pings. With the stock RB20 turbo my engine handled 14psi and made ~200rwhp. With the RB25 turbo is would only take 12psi (14psi and she pinged) but made ~250rwhp.

4. Plenty, but better off saving up and Nistuning it.

5. 180rwkw with a tune is easy, mine was mkaing 183ish (~250rwhp) without a tune. Stock injectors should be good for almost 200rwkw.

No they won't, not without fuel pressure bumped up.

bubba Grand Master

bubba

Posted
Posted (edited)
3 Possible reasons

1: Dyno readin fudged

2: You Don't have stock injectors(higflowed or a/m)

3: Fuel Pressure Bumped up

1: highly doubt it, reputable tuner here in Perth that I have used a fair bit and he wasn't trying to sell me anything

2: they were completely stock.

3: stock fpr.

Srsly guys, it is NOT a clear cut THIS IS WHEN YOU WILL MAX SOMETHING OUT.

Tell me, who has maxed a stock afm? and the circumstances?

RB20DET, stock afm, stock injectors, stock ecu, 12psi through RB25 turbo, 183rwkw - AFM NOT MAXED

I then went RB30DET, stock afm, stock injectors, stock ecu, 12psi through RB25 turbo, 183rwkw (a lot sooner) - AFM MAXED AT ~6000rpm

But anyway, a dyno is NOT a COMPARISON tool unless you are all using the SAME dyno on the SAME day with the SAME parameters.

If you are going to argue with me about 20hp, then you're a dickhead.

Edited by bubba

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