Quote:
Originally Posted by GregWeld
My honest opinion --- that's what your DYNO operator should have been helping you with....
A guess on timing is a motor that's going to have problems.
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There is no guessing here on timing. We already tuned for timing on the dyno. And you know his rep. He isn't a schlep. (Hey that rhymes)
This is just for the start up and low rpm retard. I am not putting in MORE timing. We are already running at least 2 degrees less advance than what we tested fine on the dyno, but since power difference was less than 1% 30* is where it stays. Add to that E85 has much better anti-detonation characteristics than gas and we are in a pretty conservative safe zone, all things considered.
I already discussed with Mike that I was going to put some retard in down low with my programmable box and he agreed it was a good idea.
That being said, some smarter guys than me on Corner Carvers encouraged me to increase the timing from 0 to about 800 rpm and then have a constant retard surrounding my idle rpm (300 rpm on each side of it -- target idle is approx 1100) and then at 1400 rpm start pulling out the retard (advancing more) in a linear fashion up to 3000 rpm. Again, smarter guys than me! Here is where I am out now. They encouraged me to add a MAP sensor if I really start driving this on the street a lot but only time will tell how much that is.
