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(i don't have hptuner yet)
I can't seem to narrow down an answer so here goes...
Can I manipulate the spark advance/retard based on engine rpm? ESAMPLE: At 6 psi the engine does not typically see poseitive boost until it is near 4000 rpm. (i always use premium fuel and no knock retard module and everything is fine a 6psi) Can i advance the timing a few degrees at LESS than 3000 rpm and then use standard timing from 3001 to 4500 rpm and then retard timing a couple of degrees from 45001 to redline? I would like to see the performance gains if any by advancing the timing in the 'non boost range' and I am also considering all that will be involved when I change to a smaller pulley (apx. 9psi). When I move to 9 psi I will want to retard the timing...but does the timing have to be retarded for the entire RPM range?
I am picturing a timing table for 9 psi like this:
0-3000 rpm (slightly advanced)
3001 to 4200 (normal timing)
4201 to 5000 (retard timing 1-2 degrees)
5001 to 5800 (retard timing 2-3 (or more as needed)
thanks for any feedback. g.
I can't seem to narrow down an answer so here goes...
Can I manipulate the spark advance/retard based on engine rpm? ESAMPLE: At 6 psi the engine does not typically see poseitive boost until it is near 4000 rpm. (i always use premium fuel and no knock retard module and everything is fine a 6psi) Can i advance the timing a few degrees at LESS than 3000 rpm and then use standard timing from 3001 to 4500 rpm and then retard timing a couple of degrees from 45001 to redline? I would like to see the performance gains if any by advancing the timing in the 'non boost range' and I am also considering all that will be involved when I change to a smaller pulley (apx. 9psi). When I move to 9 psi I will want to retard the timing...but does the timing have to be retarded for the entire RPM range?
I am picturing a timing table for 9 psi like this:
0-3000 rpm (slightly advanced)
3001 to 4200 (normal timing)
4201 to 5000 (retard timing 1-2 degrees)
5001 to 5800 (retard timing 2-3 (or more as needed)
thanks for any feedback. g.
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