Hey guys, need some help.
I recently put in 680 injectors and Perrin Fuel rail. After it was in, went for test drive and car started bogging when around 6k+ RPMs and full boost. If i dont use turbo, it doesnt happen.
I believe i had an aftermarket fuel pump that came with the car already when i bought it ( the guy gave me all the stock parts, I have the stock pump) but i will double check tonight.

Anyway, i left the Perrin fuel rail on and put the stock injectors back. Now the car idles funny, the car revs itself from 600 rpms to 2k (probably to keep itself on) when i first turn car on, once warmed up it stays on at 600 rpms.

THeres a funny hissing noise coming from under fuel rail and intake mani.
Other than that tho, the car runs very rich.
And last thing, when i rev and let go of gas pedal, it stays at reved spot for a second. In other words, there is a delay between me taking my foot off the gas, and the RPMs going down. (about a full second)

Any help would be appreciated! Maybe just a tune, or I messed up the fuel pump when i test ran it with the 680 injectors?
I will get a video up tonight.

 

was anything else installed??was injectors scaled??

 

erratic idle sounds like a boost leak if the stock injectors were put back in. New injectors need to be scaled correctly.

 

also if you hear hissing, may have an air leak....or fuel injectoors not seated correctly...had an issue like that with my gf beetle, fuel injector wasn't seated right causing stumblin idle and rev.

 

i feel like a nub lol
but what do you mean scaled.

EDIT: i just did some researching, this has to do with tuning doesnt it?
merrrrr :/

 

1 . hmm, well wen i had the 680 injectors and the PERRIN fuel rail in, i had no bad hissing, no bad idling, everything was good, i was just getting the bogging at full boost and high RPMs

2 . now with the STOCK injectors but PERRIN fuel rail, i get a hissing sound, and wierd idling. When under high boost and high RPMs, car runs fine.

Also every now and then SERVICE ENGINE light comes on for a few seconds then turns off. Im def. working on car tomorrow night so any help is appreciated!

should i put 680s back in and get a fuel pump??

 

lol thats the key

 

could also be stockers got clogged while out...

 

So im taking taking it that my fuel pump is ok
i just need a tune, and cleaner injectors