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R33 Gtst Engine Light Problem..

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Hey im kinda new to this and just wondering if any1 could help me. the other day i was muckin around with mates and noticed that at high rpm my engine light flashes and a tapping noise occurs.. im running 14psi, pfc ecu if that helps.. and help would be much appricated.

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engine light flashes when the injecters are close to max, AFM is maxed or its detecting alot of knocking.

your probably maxing everything if they are stock injectors and AFM, and the knocking noise would be detonation.

not good, Re-tune!

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14psi on a stock turbo? Hope not... likely to kill it.

If you have a PFC, my bet is its knocking. You cant max AFM/Injectors on a stock turbo (assuming you are using stock)

In which case every time you do it, your destroying your motor.

Take it to your tuner, and get it looked at.

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You cant max AFM/Injectors on a stock turbo (assuming you are using stock)

I maxed my stock AFM with stock turbo, about 18 months ago when I had the stock turbo I had it tuned and it maxed at around 6,000rpm, 12.8 psi 188 RWKW.

maybe because i live in tassie and it was probably not much above 10 degrees lol

either way, the light flashes for those 3 things, injectors, air flow metre or dectecting detonation.

none are good, i'd get it tuned again

also, you say fuel reg? i'd probably shit can that and fit a stock or nismo FPR.

you might want to look at a new fuel pump too, maybe thats getting lazy. plus if it hasnt been replaced its been buzzing away for over 10 years, time for a newbie

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Get a hand controller for ya PFC if u dont already have one. Then have a look at your knock levels (OVER 60 and your engine will hate u) then have a look at your injector duty cycle (should never go past 90% for safety) mine was at 86% on 1 bar stock turbo and mad 285 RWHP. Ask your tuner to give u a quick heads up on stuff to look at. Hope that helps.

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Just to confirm things, the recommanded max boost for a factory RB25DET turbo with the ceramic turbine wheel is about 12 psi. For everyday driving, I'd be running it on 10 psi as your 'Hi boost'. Anything over 12psi and you run the risk of breaking your turbine off and embedding it in your cat convertor. Not a pretty sight at all.

In regards to the engine light.... With the POWER FC, it uses the warning light on your dash to indicate a number of things.... maxin out your injectors, engine knock etc.... if you had a FC Commander controller, you could in fact program it to show a number of these 'warnings' in real time.


<---- GO HERE, TAKE YOUR TIME AND READ THE BLOODY THING.... It'll explain to you a lot what that stupid Japanese booklet that the PowerFC came with doesnt explain...it probably does, not that any of us could understand it lol unless you're a Jap of course.

Edited by smok74
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Thanks guys, my tuner is CRD in silverwater syd.. im new to this turbo life as i only just got my full lincense to drive it.. my LO setting on my ebc is 12psi and HI is 14, on the LO setting it does not have this problem as far as im aware of. As it costs some decent coin to tune is it ok to drive on LO (12psi) until i have enough to get a re-tune..? I have also noticed today that on 14psi my boost gauge went all the way to about 18-20psi... i backed off emidiatly.. ??????? (Any reputable tuners in syd would be great..) Thanks

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