C U IN REARVEIW

05 t-trim blower,meth,boosta pump,585whp. Car has been sitting in garage for a couple months....took it out for a spin tonight and is breaking up/bucking above 4k under boost.....where to start? Fuel pressure? Do the boosta pumps generally just give out w/o warning? Drives fine out of boost....

southspeed

meth is working for sure?

C U IN REARVEIW

Wasn't watching for light or intake temps....car is not tuned for meth dependency

southspeed

oh ok gotcha. I'm not smart enough to help just figured I would throw that out there.

C U IN REARVEIW

Thanks though

Slo-Poc

Start with the simple things like plug wires and fresh gas. Maybe swap plugs and check fuel pressure with a data log.

Unreal

what he said. Plugs wires vacuum leaks loose wires etc. start there.

C U IN REARVEIW

Plugs have maybe 300 miles on them (but will re-check),checked hobbs switch and injector wires too. Best way to check for vacuum leaks? Runs perfect below 4k rpm....

Unreal

Smoke test, windex, soapy water, etc.

Pressurize intake and watch for bubbles as you spray connections with soapy water.

C U IN REARVEIW

Ok,guess I know what im doing this weekend

BRING IT

When my car did that it ended up being a broken valve spring.

Ant-Man

^ Sorry to say but mine was the same thing. It eventually bent a valve and kissed the piston. Mine was due to a shitty shop install and not measuring pushrod length + I used PAC dual springs, now I use BTR dual springs.

C U IN REARVEIW

Hmmmm....i'm still running stock cam/springs

C U IN REARVEIW

It is bucking above 4k....but seems more like a fuel issue (falling on it's face,then lunging forward,ect). But will definitely check it out,thanks

inspector12

Well I hear you saying the plugs only have 300 miles and while I agree that they should last longer on you particular setup. I have found that they tend to fuel foul quicker on the FI setups. Running fairly rich under boost most for protection etc... Unless your running an IR plug Its a cheap $25 fix to put some new NGK plugs in it instead of "Checking them" you've done half the work to pull them. Then you stick them back in and the miss is still there, and you do a bunch of other checks to find out later that it was plugs to begin with. So I agree to start them but just replace them and move on to the next potential culprit. GL!

Ant-Man

I changed my plugs out like 4 times and re-gapped each like 3 times. Nothing really helped mine lol.

Can you get a video?

C U IN REARVEIW

Wil try to later....going to try and data log it after i make sure the boost a pump is working

90zcrex

Sounds like fuel pressure is dropping, guessing you don't have a wideband?

Ant-Man

Okay. Let me know if it is your BAP I have one with 3 track passes I'm trying to get rid of, even then if you're gonna do a fuel system like ecs or A&A shoot me a PM as well.. I have some info you might want

C U IN REARVEIW

I do,in the middle of trying to set it up in dashlogic....so gauge is disconnected at the moment. Going to hook up gauge this weekend again