Update on STS problem
#1
My last and best guess was a bad cat. Took the y-pipe off today. The drivers side cat was messed up pretty bad. I went ahead and gutted both of them. What a pain in the a**. Also turned off the rear O2s. Truck feels like it is 2-3 tenths faster. Guessing from the sotp meter. I was hoping the gutted cat would help the lag, but it did;nt It is alot louder also. Definately gonna have to get a muffler on it now.
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#10
Dave is gonna pick up with tune and traction. Last time at the track, I didnt want to lean him out any even though I knew he was way rich because his wideband isnt installed yet. Once we get that in, we can get his tune right. Dave drives this truck everyday and I didnt want to take any chances with the stock pistons. He has a lot coming up to install...wideband...intercooler...forged motor...more boost so we can afford to be a little patient on his stock motor. Once she is done....she is gonna ROLL!!!! I do think the turb helped kill the cat. Like I said, it appears to be rich and then he is dumping alky on top of that for safety. He don't need no stinking cats anyway
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shootermwc
GM Parts Classifieds
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Oct 8, 2015 01:45 PM
dantheman1540
Tuning, Diagnostics, Electronics, and Wiring
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Sep 28, 2015 09:22 PM



Glad you got it fixed. Now go get us some track times
