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R33 Gtst S2

Mattw_83

By Mattw_83,
in Engines & Forced Induction

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Mattw_83 Community Regular

Mattw_83

Posted
Posted

Hi.

Ive had my car repeatedly tuned with Nistune and Z32ecu. Its been a big fail in my book (runs like shit too many bugs) and im having it out replacing with r32 ecu shortly.

Over the last week i had suspected more engine ping. Last night it was confirmed. Floored it in 2nd from low revs (say around 2000rpm) got to a bout 4000-4500 and it rattled so loud my girlfriend even heard it. Im surprised it didnt let go there and then... shit box

Question is, how could this be if data doesnt change??? ive got a brand new fuel pump, sparks, coilpacks.... What else could cause it other than a shitty tune? Seems to have gotten worse as the weather has gotten cold. But again ive been advised this wouldnt be the case because "cold nights, air is denser, would ping worse in the day...).

FMIC

STOCK TURBO at 13psi

NISTUNE z32

Z32 AFM

3 INCH

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SlowSkyline Collaborator

SlowSkyline

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yeah thats fine was just wondering, yeah nsw, got mine tuned by Mark at MRC performance in castle hill. i was VERY happy with my results after a shit tune by someone else aswell. mine was pinging, running really rich and missifring. Now is fine, running like it should.

As to your question about if it could be anything other than a bad tune, mine was doing the same as yours, my 2 main problems were my iridium plugs were shit, so dropped some coppers in with .7 gap and my bov was blocked off, i didnt know about this as it was a gasket where the bov bolts onto the intake pipe. After this was pulled out and given the flick the car ran 10x better.

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mad082 Grand Master

mad082

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could be bad batch of fuel, blocked fuel filter, dirty injectors, etc. the list of possible causes are long. or it could simply be that the tune was dodgy. just because the tune was done by a "reputable" tuner doesn't mean it was good. if you spend enough time looking you will find horror stories from every tuning workshop around. some just have more bad stories than others. i know of tuning shops who have charged big money for tunes so bad that the car wasn't even able to be driven home. they claimed that the wiring was done wrong, depsite the fact that the car had been running with that setup for about 1 year and had only had a bigger turbo fitted and that's what it needed the tune for.

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Mattw_83 Community Regular

Mattw_83

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yeah thats fine was just wondering, yeah nsw, got mine tuned by Mark at MRC performance in castle hill. i was VERY happy with my results after a shit tune by someone else aswell. mine was pinging, running really rich and missifring. Now is fine, running like it should.

As to your question about if it could be anything other than a bad tune, mine was doing the same as yours, my 2 main problems were my iridium plugs were shit, so dropped some coppers in with .7 gap and my bov was blocked off, i didnt know about this as it was a gasket where the bov bolts onto the intake pipe. After this was pulled out and given the flick the car ran 10x better.

Failing this last effort ill be going either there or autotech engineering. Its just a long way...

Mine is pinging badly, stutters just off idle, when i turn the a/c on shows a fault which looks like a cat converter with heats lines off it, accelerates up the revs unsteadily... lesson learned. Leave it stock.

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Munkyb0y Grand Master

Munkyb0y

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Failing this last effort ill be going either there or autotech engineering. Its just a long way...

Mine is pinging badly, stutters just off idle, when i turn the a/c on shows a fault which looks like a cat converter with heats lines off it, accelerates up the revs unsteadily... lesson learned. Leave it stock.

who wired up the z32 ecu? you need to cut the wire that goes to pin 33 on the rb harness, or the exhaust light comes on with the aircon.

there's a bunch of other rewiring that needs to happen for the swap to work correctly.

so maybe your other problems are related to incorrect wiring of the new ecu.

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Mattw_83 Community Regular

Mattw_83

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who wired up the z32 ecu? you need to cut the wire that goes to pin 33 on the rb harness, or the exhaust light comes on with the aircon.

there's a bunch of other rewiring that needs to happen for the swap to work correctly.

so maybe your other problems are related to incorrect wiring of the new ecu.

Tuner/Workshop in brookvale. Ive been told if could audibly hear ping from inside the car its probably caused serious damage... awesome news.

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