Got my motor freshened up over the winter and now I have a couple hundred miles on it and want to start dialing in the tune. Nothing changed as far as mods go, in my sig besides adding an Accufab 70mm TB. Car ran great last year on dyno, track and drivability.
However, I got some drivability issues after making parking-lot-type maneuvers that might be attributed to the following.
Few issues. NOTE, I did not have these last year besides backing up peddline after warm up?? Initially the car cold starts great and I can back it out without peddling, etc. Hight idle until temp hits 180. Runs and idles great at stop light, etc. and car drive it for hours. But, once I park it and restart when it's warm, put in reverse then drive 70% of the time it sounds like it's missing, sputtering and once I get it in drive it clears up bout half a block down or so??? I know that trans is fully mechanical and the FAST does not communicate with it as far as D, R, N, etc. goes?
Any input is greatly appreciated.
Thanks
However, I got some drivability issues after making parking-lot-type maneuvers that might be attributed to the following.
- However, one major change I believe. I relocated the IAT sensor to the back of the lower intake. I do not believe it was being utilized last year as it was just hanging by the filter. That's how I got the car. How do I know if it's working correctly or working at all? Any particular screen? What changes do I have to make to my tune as I believe the computer adjusts according to IAT sensor? I hear Cal on here comment on the importance of this sensor to your tune and FAST corrections??
- What should my TPS % be set relative the the setting in the FAST tune? I believe it should be either one point lower or a few? I set it last year, but forgot what it should be. I know you can just change the setting in FAST and not mess with setting it at the throttle body.
Few issues. NOTE, I did not have these last year besides backing up peddline after warm up?? Initially the car cold starts great and I can back it out without peddling, etc. Hight idle until temp hits 180. Runs and idles great at stop light, etc. and car drive it for hours. But, once I park it and restart when it's warm, put in reverse then drive 70% of the time it sounds like it's missing, sputtering and once I get it in drive it clears up bout half a block down or so??? I know that trans is fully mechanical and the FAST does not communicate with it as far as D, R, N, etc. goes?
Any input is greatly appreciated.
Thanks