[steve99]

Originally Posted by Rifle

Had some troubles in the last two weeks with my Twin Screw. Turns out my pre-o2 sensor exhaust leak (against block), was causing the sensor to read lean and dump gas into the block. Developed a bad knock. Pulled the oil, smelled like gas. Changed oil, stripped the car to stock, ran it for a week, no issues. Tuner sent me a new tune with less timing, ran that for a week with no issues. I flashed the final tune (original one) back on it, and have been running it for 24 hours now. I've also sent him these logs and am awaiting confirmation that I'm good to go. If anyone can take a look and tell me how these look, that'd be awesome.
There's a bunch of 2nd/3rd gear pulls, and one decent 4th pull. Wasn't on the highway, so I did what I could.
http://datazap.me/u/rifle/final?log=0&data=6

Originally Posted by DocWalt

IMO it looks a bit lean for FI and the trims during "normal" driving are pretty far negative.

just remember the tuner may not have rescaled the o2 sensor, the stock o2 sensor scaling only reads down to about 11.8 afr so you cannot trust the afr reading it may be running richer.