Car is running lean on startup
Thread Starter
Joined: Jun 2014
Posts: 1,241
Likes: 47
From: Noblesville, IN
Car is running lean on startup So I've been working on getting my tune dialed in, and figured I'd start with my MAF dialed in. I've noticed something though. On first startup, regardless of ECT, the car is running really lean. Like anywhere from 15.4 to pegging my wideband at 16+. Give it a little while though and it ends up more like normal, where it's within a couple of percentage points. At first I thought something was wonky because it was really effing cold this morning, but even after I stopped for a few minutes it's doing the same thing when hot.
Did I miss a step somewhere? Or is there something in the tune that I screwed up?
Thanks all.
Did I miss a step somewhere? Or is there something in the tune that I screwed up?
Thanks all.
Not really to be honest. MAF tables don't take temp into account and temps wouldn't affect the MAF physically either. You can always spray some MAF cleaner on it for ***** and giggles though.
