Fell into an old trap
Thread Starter
Joined: Sep 2004
Posts: 4,905
Likes: 906
From: Stockbridge GA
Fell into an old trap So I was tuning my dad's Silverado with an A/A IC'ed Whipple blown 4.8. It has a 2bar map, but still also uses the MAF because it's a 4.8 on low boost. I had checked all mechanicals, and fixed every issue. I then tuned it as best I could in the summer, but told him it would need tweaking for colder weather this winter, in order to fully tune the SD side of things. When cold weather hit, he had idle issues. It took forever to almost get them right. Skip forward a few weeks, and he is having these same issues again. It turns out the FPR was going bad, and I had been trying to tune a mechanical problem. I had just been overlooking the possibility of parts problems since I already expected to have tune issues. Just a heads up- no matter how good you tune, sometimes parts go bad.
In my experience, if i have to adjust something (idle, wot, part throttle) more than once, then I suspect a mechanical issue.
I have tuned cars in excellent mechanical conditions and they have very minimal changes with weather, I did the tuning only once and it remains good for a long time until more mods are done.
I have tuned cars in excellent mechanical conditions and they have very minimal changes with weather, I did the tuning only once and it remains good for a long time until more mods are done.
Thread Starter
Joined: Sep 2004
Posts: 4,905
Likes: 906
From: Stockbridge GA
In my experience, if i have to adjust something (idle, wot, part throttle) more than once, then I suspect a mechanical issue.
I have tuned cars in excellent mechanical conditions and they have very minimal changes with weather, I did the tuning only once and it remains good for a long time until more mods are done.
I have tuned cars in excellent mechanical conditions and they have very minimal changes with weather, I did the tuning only once and it remains good for a long time until more mods are done.
