okay here's my set-up:
t-25 w/ log manifold
450's, V-AFC, BTM
smic, probe bov, 8-10 psi.

i have my afc set-up so that my a/f guage reads two bars in the green when at WOT, so that should be good but i can't figure out my timing. i was using the btm and had it set at 1 but i was taking a road trip the other day and everytime i would step on it i would hear the turbo spool but it seemed like i was being held back. so i floored it and at the same time had my girl slowly turn the **** down, as it went down i could feel it fulling harder. now my btm is set at 0 and it pulls pretty good but it still feels like it is being held back a little and when i let off of the gas it seems like it pulls a little bit more for a fraction of a sec. should i adjust my timing at the distributer? if so should i retard or advance it?

 

nobody?? any input thermal or joseph?

 

uhm, Whats our base timing set at?

 

stock

 

Are you sure? you havent fucked with it at all? no adj cam gears either?

Do you hear any detonation? like on a heavy load in 3rd gear?

 

What does detonation sound like?

 

yep, i haven't messed with the timing at all. no adjustable cam gears of anything. no detonation that i can hear. should i just try to retard it 3 degrees and keep the btm set at 0 and see if it gets any better?

 

retarding base time means that the car's timing will be retarded right from 0 rpm. it will make throttle response worse, low end power will suffer. now, leaving it at stock w/ keep stock throttle resp, and some low end power, then as boost increases it sets timing back per psi. so 1 deg retard every 1 psi of boost, or .75/psi, .5/psi, etc.