Hi, I've been having HPTuners for a few years now, although never really got around to using it to it's potential. May have to start doing that.
Mods & Changes:
I have a cam & bolt on 2000 Camaro SS. The car was tuned by Futral Motorsports in 2010-2011ish. Since then I have changed the intake from a lid setup to a K&N FIPK, and changed the stock axle-back exhaust to a single in-out turbo muffler.The only adjustments I made to his tune is the fan temps because I added a 160 thermostat.
Futral does offer $60 re-tunes after the first, but they are located about 2 hours away and I would like to do what I can to fix my problems with my software for now.
Issues:
The STFT's are ridiculously high, sometimes going to 30+ at idle, and staying in the positives throughout the rpm range (except WOT). I'm guessing this has something to do with the car not being re-tuned in 2 years, and a higher flowing intake & exhaust. I used to get about 15mpg in the city, now it's around 12, I can smell the unburnt gasoline so easily now. Is there anything I can do to lean it out back to normal?
Also if I start the car with the a/c on it will sometimes surge a bit. If I have the car at operating temp and click the a/c on it will surge a bit and go back to 900rpms. As well as throwing a (throttle position sensor malfunction) SES code only when the a/c is turned on for more than 5 minutes, my TPS sensor was replaced about a year ago and works fine when the a/c isn't on.
One other thing is the Bank 1 o2 sensor throws a code (but no SES) saying the heater inside the sensor is no good. I have a new one just haven't installed it yet, would this be a good idea to change even though it's not throwing a SES? I'm guessing the heater in the o2 sensor is for cold starts. I'm not sure how to read the o2 B1 and o2 B2 charts in the scanner, if someone can chime and and tell me if they look normal or not that would be awesome.
PCM] P0121 - TP Sensor Circuit Insufficient Activity (History) (Immature)
[PCM] P0135 - HO2S Heater Performance Bank 1 Sensor 1 (Old) (Immature)
[PCM] P1626 - Theft Deterrent Fuel Enable Signal Not Received (History) (Immature)
Tune file / & Scan (normal driving) from today attached, a/c was turned on toward the end but no surge because car was warm.
Any help would be appreciated, 12MPG sucks. Thanks!