08-01-2015, 09:31 PM
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#11
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Post Whore!
Join Date: Sep 2005
Location: SWFL
Age: 50
Posts: 3,318
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Quote:
Originally Posted by Kingtal0n
Im so tired of seeing this. Enthalpy tunes contain 5-6* too much timing, in my experience over the years. Its the sort of thing you cant catch until it eats something up, because the engine seems to run fine with too much timing.
In fact someone recently sent me a timing map that was entered into a PFC done by "enthalpy" and he was complaining to me his knock count was really high. I had to pull 6* off the top to get it back to normal. Very minor influence on performance/power so nobody ever notices. I hope he will see this, and fix it, I will say it again: optimal pump gas timing for sr20det engines with 9:1 compression is around 9* btdc at peak torque at the pump gas limit (18~psi on 93). I know you have a KA, and the timing is similar, around 9* at peak. Your "tune" probably contains about 14 to 16* btdc.
There was a thread a while back comparing JWT to enthalpy and the JWT tune made more power, and every asked why why, and it was found to be the timing, JWT was using much less timing. I knew already but it just poured fuel on my theory.
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I concur,
Sent from a Highly Tuned Note 4.5!!!
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