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Old 07-09-2013, 01:19 PM   #68
Dezoris
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Join Date: Aug 2012
Drives: FR-S
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Quote:
Originally Posted by regal View Post
The way the ECU is setup on this car is it relies heavily on the Knock sensor feedback (knock correction.) This is why the these cars dyno all over the place. I think its a way they get to pass emission laws around the world but isn't great for long term durability (especially with FI.)

A safer tune will rely less on knock correction and just tune out detonation as much as possible.

The FA20 tune may be giving you more timing because you're using 93 in IL where the same tune on CA gas may give a less advance (since you can only see the end result with data logging.)

I would be interesting in seeing knock logs doing a 0-80 mpg run on the three tunes.
When I built the chart that was the first thing I looked at, all logs chosen were those with positive knock learn values and no knock.

Viscontis logs always had a zero knock learn, but no knock.


Quote:
Originally Posted by jamesm View Post
my car logged lots of knock correction when it was stock. now that i have the turbo kit and the tune is close to final, i haven't recorded any.
I am seeing similar results.
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