TT Conversion SAFC Setting Help!!!

[RealMcCoy]

There are two correction factors, As you have yours at 20% and 80%, anything under 20% throttle will use the low throttle correction, anything over 80% throttle will use the high throttle correction, anything in between will be interpolated by AFC somewhere in the middle.

I think your mistake is trying to use the wideband to tune in closed loop. You should only use the wideband to tune open loop operation. In closed loop, you're looking for happy fuel trims(100%)

[DrGonzo]

There are two correction factors, As you have yours at 20% and 80%, anything under 20% throttle will use the low throttle correction, anything over 80% throttle will use the high throttle correction, anything in between will be interpolated by AFC somewhere in the middle.

I think your mistake is trying to use the wideband to tune in closed loop. You should only use the wideband to tune open loop operation. In closed loop, you're looking for happy fuel trims(100%)

OK Now that makes sense. Thanks!

So how do you determine when you are in closed loop vs open loop? I checked Stealth316 and Jeff states that closed loop is during cranking, warmup, strong acc/dec and heavy load.

Taking it to a shop is out of the question right now. The closest shop I would trust to do this is 3SX and they are 3 hours away. So I have to get at least get a basic tune on the car in order to drive it to 3SX.

[Blown3000]

Interesting story - so what was the end?