The curves look spiky, indicative of a timing issue. What are you using for boost timing control??? No a/f graph? You are losing quite a bit at the vtec crossover.
Don't forget to post up in the power sticky
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Last edited by sharkcohen : 02-28-2003 at 09:14 PM.
Originally posted by RWagner nothing with timing right now.
Dude, you should not be boosting 8 psi with stock timing. Those spikes in your curve are very likely due to detonation. Even a built motor can be toasted.
The only way to say is to get a product like an MSD BTM and hit the dyno again and get and tune a A/F line. You really do want to retard the timing back a bit or else you motor might blow up prematurely. If anything, get something that will retard your timing.
Install it before you boost again. The J&S has a boost/timing control feature that is controlled by two knobs, the "start" knob and the "rate" knob. You set the start knob to what psi you want to start retarding timing at (I suggest setting it to 0 so that it starts working as soon as there is boost). You set the rate knob to adjust how much timing per psi of boost you want. .6-.8 degrees of timing per psi would be a good start, and then monitor you J&S to see if it retards timing because of knock (detonation). It it does, then you need more timing retard.
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