haloevolution45

ok i dont know where to start on this one but lets start out at i have aftermarket injectors 780cc fuel rail and pressure reg and fuel pump brand new spark plugs and wires. but when i get on it and it about 5200-5500 rpm my cars falls flat on its face and loses like all power but you can still take it to seven if wanted. i herd it could be my coil packs?? would they go bad at 38kmiles? and is there anyway to test them?? and i think it could be my fuel?? base pressure at idle is set to 45psi and vacuum runs from the stock fuel solinoid control. does anyone know if thats the right psi for 780cc injectors?? or is 45psi if you have stock injuctors 520cc???

Warrtalon

iTrader: (6)

We need a much better explanation than "falls flat on its face." Does it sputter, does it hit a brick wall, are there any noises, do the rpms jump? You also need to list way more than just your fuel mods.

If you by chance have the stock intake still, then you probably have Intake Snorkel Syndrome [tm Warrtalon].

McDougal

iTrader: (6)

I had a similar sensation when driving my car after I got a TBE. It was fuel cut. Had it tuned and now it is all better.

Warrtalon

iTrader: (6)

Fuel cut is an emphatic and immediate loss of power that feels like hitting a brick wall. I would not equate that sensation to the phrase "falls flat on its face," but it's possible that's what he means...

Rich EVO MR SE

You're tuned for all those mods obviously right?

justboosted02

iTrader: (31)

if it was your coil packs you should be getting a bunch of missfire troublecodes

haloevolution45

sorry i wrote falls on its face i was in a hurry writing it before i went to work but anyways. i do get missfire codes but i changed my spark plug wires and have not got it back yet that was not to long ago sounds like it pops a lil bit but not really just loses power dose not really make any noise the car bounces a lil bit but other then that kinda hard to explain. im trying to get my car tune but cant while its doing this i was on the dyno not long ago and he said he thinks it could of been my boost was creeping to 26 psi and it would start doing that he said prob blowing out spark or he said it could maybe be my coil packs. i got the boost under control boostin 22 psi but still i have that prob..

mods include full exhaust with cat delete tubular manifold fp green turbo hks intake and blow off valve ( i know people say that blow off valve sucks but promise mine does not leak.... yet lol) all intercooler piping bouschr intercooler ams 780cc injectors and fuel rail and regulator and walboro 255 fuel pump i think that covers most of it. besides clutch and stuff but that has nothing to do with the engine prob..

haloevolution45

heres a lil better detail im driving lets say second gear. about 2000 rpm i floor it hit full boost about 3200 rpms pulls fine until about 5200 rpm loses almost all power pops barley ( evo log no knock detected) and car kinda bounces a little bit but will still continue to gain rpm but slower ( never tried letting it go to long once it starts to do that.

Warrtalon

iTrader: (6)

If you're not tuned for all that, then you're definitely hitting fuel cut and likely damaging your motor every time you try to boost...

haloevolution45

i think im tuned for the injectors he said he has the fuel curve where he wants it( if thats what that means im asuming). its just not fully tuned cause my spark is blowing out. ( from his opinion) is there any sort of why to check the coil packs before i buy knew ones? or i guess i could just use the ones off my friends evo.

haloevolution45

doesnt fuel cut kinda sound like detinating too? (dont think i spelled that right) but if it is it sounds nothing like that.