Juicedh22

iTrader: (6)

Okay, So I just added an ls3 90mm TB along with a FAST 102 manifold, to go along with my cam, etc.. On my 2003 zo6.

The car starts and idles fine, it takes some throttle response fine. However, if you rev the engine a few times, or with the engine off, and car keyed-on and take it to WOT, the blade moves, but eventually I get the Reduced Engine power, from either p1515 or p1516 (had it happen both ways)

I have seen from some lots of searching some random mentionings that the TAC module needs swapped out? But nothing definitive, and doesnt seem to be common. I am definitely not the first to put an ls2/ls3 tb on my car, so what gives? Is it the TAC? Is it my casper electronics wiring harness adapter (the pinout seemed to be right though, unless a wire is loose?)

KENS80V

iTrader: (16)

The later LS3 throttle bodies (09/10) #12605109 aren't compatible with your C5 Corvette. You must use a LS2/LS7/LS3 throttle body #12570790 (05/08).

Juicedh22

iTrader: (6)

Thanks,

You're the 2nd person to tell me that (something to do w/ different TPS resistance values). Is there any data behind this? What is the source for the incompatibility?

KENS80V

iTrader: (16)

Here is a link to a bit more info http://forums.corvetteforum.com/c6-t...my-09-ls3.html