deuce4935

iTrader: (2)

Heres the deal, my 98' ls1 has been rebuilt, and upgraded with ls6 heads, cam, intake, and pacesetter headers. For some reason the engine backfires and shuts down at wot, is idling very high and the drivers side header gets red hot like its running rich on that side only. I'm unable to have the computer properly tuned at the moment but I am hoping for some pointers on what to check in the meantime. Thanks in advance guys for all help.

69LT1Bird

iTrader: (1)

Red hot would be lean. Unburned fuel would actually cool the header.
Running out of fuel at WOT would cause it and a lot worse if you don't get it tuned correctly.

deuce4935

iTrader: (2)

So are you confirming that these conditions are caused by the compueter not being properly tuned?

jimmyblue

iTrader: (11)

Make sure your TPS voltage at WOT is not going
over the fault limit, it can freak out many TPS-
based decisions (like PE mode as well as trans).
Stay under 4.7V, limit is 4.75 to fault.

Radcannon

iTrader: (3)

Your computer should be able to control those mods running of a maf tune but somethings not right.

If its red hot its lean and very very very very VERY bad on the engine. Your lucky it shuts down and doesn't bang and the clunk and clang down.

Do yourself a favor and do not drive it until a computer cna get put on it. If you have hp tuners it shouldn't be hard. Just look at injector duty cycle, tps sensor was mentioned, and check o2's should be around 453 and start switching at cruising and should go higher at wot 700 maybe 800. If it goes below 450 at wot get out immediately and take it somewhere. IF it only does it on one bank look for rail or injector clogging.