Sr20det built leaning out at wot help

[Rocketbunny240sx]

Hey guys ive tried looking around for a sr20 thread that is similar to my problem but their usually stock sr20det. I have a built redtop with 740cc injectors a gt30 garret turbo. Im pushing 22 psi on high amd 15 on low. The problem is on low boost my car runs fine its getting 12.5-11.8 ish at wot. But for 22 psi my car leans out to 15-13 ish on my wideband. At idle its 15-17 ish and cruising is around 13-15 ish. It keeps struggling once i get around 5000-6000 rpms on third and forth my first and second is 100% fine and smooth push on both high and low boost. Fuel pressure is at 48 psi. I doubt theres any boost leaks or vac leaks. Any ideas? Maybe a retune?

[cotbu]

How long have you been running 22psi on this built setup? If its just been built, you probably need a tune or re-tune. Basic maintenance and contact your tuner. I'd even adjust the base fuel pressure to 43.5psi and try my low settings boost again.

[Rocketbunny240sx]

For as long as ive had the car which is 2 years. Ive dailyed it 22 psi. Ive had it set for 25 before but lowered it. I just had a headgasket replaced on it not more then 3 days ago

[jedi03]

Sounds like tune to me as well

[Rocketbunny240sx]

Ok now something super weird happened today. I started my car this morning and it was running extremely rich. I thought maybe a bad maf sensor. The car struggles to get to high rpms, i cant boost the car at all and on my wideband it saids rich or 10.0 when wide open throttle. I took it down and back the street after i tried cleaning my maf with break cleen, and i tried pulling each injector harness out just to test for anything nothing. Wtf is happening now? Anyone know? Maybe my cas?

[jedi03]

You have any leaks in intercooler piping? Also for personal curiosity what kind of economy were you getting before the head was off?

[jedi03]

Also how high can you Rev with no load? Try unplug each component and can sometimes tell if is bad

[Rocketbunny240sx]

Also how high can you Rev with no load? Try unplug each component and can sometimes tell if is bad

I got it fixed. It was my maf that was fking me up. And yesterday when i started the car i found out why it was struggling, one of my intercooler pipes popped off and leaked air