Car Surging Or Fuel Cutting

[Jay_stylz]

hey guys well not to sure whats goin on with my car but everytime i give it a bootfull it seems to be cuttin out basically does the same thing as when u hit speed limiter but it only does it for a second then has full power can anyone explain what this is?

[lachlanw]

list of mods .

[Mr GTS4]

check all hose clamps and for air leaks.

[Jay_stylz]

juust basic mods such as fmic and a turbo smart dual stage boost controll high boost is only set at 11 soo its not that iwas thinkin maybe coil packs? i dunno has full 3 inch exhaust system turbo back thats about it really

[Benzino33]

nah,its a bost leak,check all the intercooler hose clamps and make sure its air tight

[mad082]

it is more than likely the coil packs if it sounds like a rev limiter (missfire)

if it was a boost leak causing the missfire then it wouldn't go away, it would get worse the higher you reved it

[Jay_stylz]

yeh thats what i was thinkin cos it only lasts for like a second when under full throttle then it picks up as normal but when i dont push the car its fine? so maybe coilpacks?

[mad082]

possibly coil packs, or plugs, or both.

[Jay_stylz]

possibly coil packs, or plugs, or both.

yeh im thinkin both lol hmmm maybe should do the plugs first then if its not that do the coil packs ?what u think how hard is it to the coils in the 33?

[JET-25L]

If you know someone else with an r33 same series then borrow a couple of their coilpacks and see if it does it.

Easiest and cheapest way to diagnose.

[mad082]

pretty easy to do the coils and plugs. just remove the top intercooler pipe (the one with the BOV) , remove the coil pack cover then undo the coil pack holders (instead of undoing each coil pack individually) and pull them all out as 1.

start with replacing the plugs first as it's a much cheaper option. should only set you back about $25 for a set of 6 plugs. just go BCPR6ES copper plugs.

[JET-25L]

just read the top again.... my car used to do this intermittently. Never found exactly what it was but i know since i put the microtech in and got rid of the afm as well it hasn't done it.

If it's a quick stutter then i'd say coilpacks.

If it's a big cut of power that sends ya forward in ya seat when it happens then it might be afm (this is what mine used to do)

Things like this are annoying coz it's hard to find the fault without looking at several things..

good luck

[mad082]

just read the top again.... my car used to do this intermittently. Never found exactly what it was but i know since i put the microtech in and got rid of the afm as well it hasn't done it.

If it's a quick stutter then i'd say coilpacks.

If it's a big cut of power that sends ya forward in ya seat when it happens then it might be afm (this is what mine used to do)

Things like this are annoying coz it's hard to find the fault without looking at several things..

good luck

mine used to do that when i wound the boost up to 13psi with the stock ecu. put a remapped ecu in and it never did it again, LOL

[Jay_stylz]

just read the top again.... my car used to do this intermittently. Never found exactly what it was but i know since i put the microtech in and got rid of the afm as well it hasn't done it.

If it's a quick stutter then i'd say coilpacks.

If it's a big cut of power that sends ya forward in ya seat when it happens then it might be afm (this is what mine used to do)

Things like this are annoying coz it's hard to find the fault without looking at several things..

good luck

yeh its just a quick shutter and the goes as normal soo id say coilpacks looks like i need a new set aye

[JET-25L]

splitfire coilpacks prices are heaps expensive now. I'd be looking at a near new secondhand set or a set of just japs if you were wanting to save some coin.