When ever I redline 1st and shift to 2nd real fast the car studders and cuts out. It will also do it if im just rolling and I rev it and drop it into a gear. I think my ecu is losing power because my AVCR which gets its power from the ECU power plug turns off and restarts. Also my AF gauge goes all the way green and stays there for like 3-5 secs. It dosnt cut out all the time, but I'd say 85% of the time it does. I have rechecked some fuses and wires and havnt found anything out of the usual.

Setup is:
JDM d15b vtec @ 5-10 psi with T3 turbo, DSM 450cc injectors, P28 ECU with Uberdata running BBKA's map.

Vid of the cutting out/studdering:

http://www.slammdsol.com/files/MOV00015.mpeg

Any Ideas on what the problem could be??!

 

Possibly a ground strap that's loose or short somewhere? Does it do it if you hit a big chuck hole?

 

Which grounds should I check? I have my battery relocated to the trunk and the power and ground wire are find back there. And no, it hasnt done it when i hit a pot hole or anything. Also i just replaced the plugs (gapped to .032), cap and rotor cuz i thought it might have been an ignition problem.

 

Hmm. It's probably not a loose connector then. Unfortunatly, I've never installed an AVCR, so I'm not sure what's involved in the wiring.

I'd think if the ECU lost power, your CEL light would come on and do that 6-second cycle like when you start the car up.

And it doesn't do it switching between any other gears, and it doesn't do it if you rev the crap out of the engine in neutral?

 

It dosnt do it of i shift quickly to any other gear, just 1st-2nd, and also is fine if i rev the crap out of it in neutral or even in any gear. Its like the shock from shifting 1st - 2nd is messing something up.

 

 

I don't know what the problem could be, but the exaust/turbo sound great.
^(free bump)^

 

ttt - I just picked up some new plug wires, im gonna throw them on when she cools down..

 

possibly in the program.....

find out where you drop from 1st to 2nd.....

then look at your mapping for that area....

try shifting 500 rpms sooner and see if it does it then.....or at any rmp....

if it doesn't studder then it is probably in the mapping...

 

well i tried it with the new plug wires and i tried shifting early and it still does it.. I dont know what the F#$^ to do... Its like im hitting a rev limiter as soon as i shift into 2nd..

 

bump for my sh*t not working

 

Could a large boost leak be causing it? Cuz I was checking everything out and just found that one of my intercooler couplers was ripped in half. I was still getting 10psi but it did seem kinda slow going from 6-10psi..

 

that would do it.....why?? you ask....because there is TONS of fuel being dumped into the combustion chamber.....that is why it was studdering...too much fuel!!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Slammd Sol &raquo;</TD></TR><TR><TD CLASS="quote">Could a large boost leak be causing it? Cuz I was checking everything out and just found that one of my intercooler couplers was ripped in half. I was still getting 10psi but it did seem kinda slow going from 6-10psi..</TD></TR></TABLE>

Yes, how do i know..... because it happens to me and i have bad leaks

O well new intercooler pipping next week W00T!!!!!!

 

sick sound... more vids!!!

 

might be kind of stupid, maybe sticking BOV? Or maybe even more stupider sticking wastegate (I don't think that's possible though)?

*scretches head*

 

iight, im gonna replace the remaining rubber couplers with some good silicone ones tomarrow. Hopefully this will fix it :crossfingers:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondainspired &raquo;</TD></TR><TR><TD CLASS="quote">sick sound... more vids!!! </TD></TR></TABLE>

Heres a vid i took right before the above one.. except this time it didnt studder/big:

http://www.slammdsol.com/files/MOV00014.mpeg

 

WOOOT.. Its fixed! I replaced all my rubber couplers with Silcone ones and also replaced a few clamps and walaaa! fixed! However there's another problem now.. No traction! haha Thanks everyone