R33 Gts-t R&r?

[Guest Rotary20B]

Basically stock GTS-T, full 3" exhaust fron turbo back, high flow cat. Boost controller set to 10psi. Auto.

Car is ok if driving lightly on throttle, if you gradually accelerate its not too bad but put foot down and it cuts out

Read a lot of conflicting advice on here about R&R, airflow cut etc..

Any ideas?

[Hell Fire]

It'll be AFM hitting peak voltage.

AFM sees so much air that the ECU thinks it's failing or something is broken, so it goes into failsafe until the voltages drop back down.

Not much you can do cept get a ECU (and replacement AFM), either piggyback or full replacement. Not recommended to go with a "fuel cut defender" type device since all they do is fake the AFM signal once it goes "out of spec" of what the ECU expects, but AFM signal is used to plot load on your fuel map, so the ECU will start leaning out the engine and cause bad things to happen

You can try and drop the boost back down on the controller, its probably going a bit over where you expect it to sit, just bring it back down a PSI at a time till it stops doing it. Also remember air temp affects AFM readings and air density as well, so cold nights naturally raise your airflow in.

Edited July 4, 2008 by Hell Fire

[R31Nismoid]

Cuts out meaning stops altogether? Keeps going but feels soft? Picks up later?

There threads are pretty common, you need to perform basic troubleshooting

1. Check/clean AFM

2. Check/inspect coils

3. Check spark plugs

4. Check all electrical connections 3 times each

5. Ensure timing is set correctly

6. Back off the boost and see what happens, goes away = R&R

And go from there really.

[Guest Rotary20B]

Thanks guys.

Cutting out.. sometimes it just cuts revs altogether, normally happens around 4500 - 5k other times it revs but feels like its making bugger all power.

Sometimes it will rev out, but just feels very soft

Coils are brand new Splitfires, plugs are new, gapped to .8.

[skylinekid]

i had the same issue but only wen it was raining turned out to be moisture in the igniter pack. would cut all 6 cylinder car would nose dive but wen i backed off the throttle it straight back to driving normal. never backfired nethin like that wen it cut the spark etc just wouldnt go at all. was a down rite pain in the arse . so another thing for u to check

Edited July 5, 2008 by skylinekid

[Guest Rotary20B]

ok so I back off the boost and it disappears

So deffinately R&R?

[Guest Rotary20B]

So the answer for me having an auto would be a piggyback ecu?

If so, whats a good option at the moment?

[R338OY]

A good option is wind the boost down 1-2 psi to stop r&r.

Then get a piggyback ECU and have it tuned to higher boost. I have contact details for a 2nd hand SAFC Neo if you want.

Cheers

[85URK]

if u still have standard cooler, it wont take much over 10psi. dont know if that would have anything to do with it cutting out at all. im having similar cutting out problems but ive just installed an avcr. so im still trouble shooting mine.