R33 Spitting Flames!

[jellyspec]

My car has been running rich for a while and for some reason It shot out flames from the exhaust when I was at 7,500 revs.

Does anyone know why this might be?

Also car struggles when it passes 4.5k revs. sounds like its getting cut off, it sort of stutters. A potential possibility that its having trouble pumping fuel into the engine? Fuel pump is very noisy all the time as well. Has anyone experienced this?

[wedge_r34gtr]

Sounds like your coils or plugs are on the way out.

Fuel pump on the way out will cause underfueling - not overfueling. (unless your regulator is stuffed too)

[GTSBoy]

Cat converter may not be very sound any more either. But the cause is not the cat, that would just be a victim. The cause is probably as per ^.

[s213b]

What boost are you on?

Misfire under load can also be ecu's boost cut.

Flames are normal on std rb's with upped boost and free flowing exhausts. I'd replace & gap plugs to 0.8 and go from there.

[jellyspec]

What boost are you on?

Misfire under load can also be ecu's boost cut.

Flames are normal on std rb's with upped boost and free flowing exhausts. I'd replace & gap plugs to 0.8 and go from there.

It's just running at stock boost with an aftermarket highflow turbo. I'm assuming around 7psi

[KiwiRS4T]

Why stock boost? Sounds like time for an aftermarket ecu of some sort. And don't assume boost levels - get a boost gauge!

[89CAL]

your hitting the limiter on a stock ECU, its no suprise it shooting flames. They do run 'safely' rich especially if your hitting R&R

I would stop smashing the limiter

as for the 4.5k rpm problem, checked your plugs and your coilpacks?

[jellyspec]

ECU is actually a mircotech

Edited November 8, 2012 by jellyspec

[MBS206]

Get it tuned then.