Originally Posted by Skull31
What do you mean the Differentials? You mean my differential gears?
Will check on after work and will get back to ya.
Changes the timing on a percent.Right now my timing reads on the Evo 0.00%
Thanks for all your help man.
Im referring to differential in terms of how something is changing(percent vs Degrees). I imagine your limited to about 10-15% total timing increase(every tuner iv seen that uses ∆% for timing is fairly limited). You could likely crank that bad boy all the way up on 91 octane and not have any knock or pinging at all.
But of course test it out, dont just take my word for it.
On my Mustang (4.6L) I run 24.5* from idle until 3500 RPM, then I retard the timing down to 23.5*, then at 5000RPM the timing is retarded further to 22*.
These 4.6Ls run best between 20-25* total timing, Id imagine its not to much different for the 5.4 3V, but the differences in cams need to be takin into account.