SR smoking, running super rich, won't rev

[isimon91]

So this problem started a few weeks ago- For some backround on the setup, its an S13 SR with 550cc denzo injectors (new-ish from Touge Factory), HKS 264/264 cams, new S14 T28, rocker arm stoppers, Walbro255lph fuel pump, oem coil packs, NGK iridium plugs.

A couple weeks ago I was parking and noticed exhaust smoke coming up through the shifter, and shrugged it off.

Got home, car was smoking more, but not burning any coolant or oil- exhaust smoke JUST smells like gas.

The next day, the car wouldn't rev over 1400-1500rpms, but instead just sputter and backfire once it reached that threshhold..

Tried cleaning the MAF, nothing, but it idled a little better. Bought a new one, and nothing.

Car idles strong, but just keeps smoking and misfiring around 1500rpms.

I heard it could be an ignitor chip or TPS sensor, but I'm not as farmiliar with motor issues as the rest of you may be.

Any help is appreciated.. thanks.

[isimon91]

Any ideas? The car's temporarily down anyway.. doing a 5lug swap,, but id like to fix the issue asap regardless.

[isimon91]

anyone????

[rebornS14]

ive had a bad water temp sensor do simular things. shitty idle and super rich at idle. its a cheap fix so try it. the one to the ecu.

[isimon91]

car overheated a couple weeks ago.. could that contribute to it?

[KiLLeR2001]

I see a list of modifications but no where did you mention a tune?

[isimon91]

has an safc2 tune

[Slidin' Sam]

1) igniter - but would probably be more intermittent
2) safc tune reset itself and/or has gotten out of wack somehow
3) turbo is shot or possibly some sort of boost leak

550's are a bit too much for a safc tune also...I was talking with enthalpy and they said s15 injectors were almost too much...just a thought.

[isimon91]

1) igniter - but would probably be more intermittent
2) safc tune reset itself and/or has gotten out of wack somehow
3) turbo is shot or possibly some sort of boost leak

550's are a bit too much for a safc tune also...I was talking with enthalpy and they said s15 injectors were almost too much...just a thought.

i had 550s on a t3/t4 setup, but now im running the t28.. it was tuned on the safc during that, and ran fine.

turbo is just about brand new.. it has a tiny compressor surge leak, but not sure where from, because I cant find any boost leaks.

How could the tune reset itself? And would a dyno tune with an SAFC be a huge difference from the current tune?

[REVOisGO]

safc tunes are like putting a band aid on a broken leg.

get a real tune dude. first, replace your ects, because that could have gone bad when it overheated. i had a similar problem, but it wont fuck with your car as much as yours is messing up. then, get a dyno tune.

[Slidin' Sam]

I am not sure on the specifics of a safc and how it would re-set itself, but I do have a friend over here who just had his power fc reset on him and now his car is running stupid rich. My advise, get a real tune...you may be able to get away with using a safc, but it is not in your best interest. you should use your safc to help fine tune a rom tune. i think these things, along with making sure your car does not have a boost leak/curing your compressor surge issue will make a world of difference.

[isimon91]

I am not sure on the specifics of a safc and how it would re-set itself, but I do have a friend over here who just had his power fc reset on him and now his car is running stupid rich. My advise, get a real tune...you may be able to get away with using a safc, but it is not in your best interest. you should use your safc to help fine tune a rom tune. i think these things, along with making sure your car does not have a boost leak/curing your compressor surge issue will make a world of difference.


figured id come back to this thread, even though im selling the motor.

was a tuning issue, thanks.

ended up getting a rom tune and it ran like a bat out of hell.

aka, amazingly. haha.

[Slidin' Sam]

Cool man! Glad that worked out for you!