First Log on my Evo IX
nj, your making this way too complicated for what it's worth. Just leave the LS active - it gets the psi built faster.
Down the road when you and your new IX have become more acquanted, and you have done enough bolting-on, then perhaps disable it to gain more control over your fueling - I just set mine both to 2500 using the original instructions.
It is not worth going bald over making your car slower by richening spool
Down the road when you and your new IX have become more acquanted, and you have done enough bolting-on, then perhaps disable it to gain more control over your fueling - I just set mine both to 2500 using the original instructions.
It is not worth going bald over making your car slower by richening spool
^^ actually I have been wondering about this...has anyone just tried leaving the enable at 2500 but then disabling it around 4000? Then wouldn't you have the advantage of the lean spool but then be able to control the afrs better in the mid-higher rpm range?
Last edited by codgi; Jun 2, 2007 at 06:18 PM.
You could do it that way Codgi, but to me the whole reason to do this is to have complete control over AFR at all times. Letting the lean spool do its thing at peak torque while maybe the best for spool (if you dont know what to do after its been disabled) isnt always best at peak torque especially with high boost.
JB
JB
Yep, and 7594 is fine if you want to keep it around 7500. I also suggest that you try setting the disable rpm to 2500. This effectively turns off the lean spool program. Most people find that its easier to control AFR with lean spool turned off like this. And actually, I'd be very interested if you could log some WOT runs with the lean spool start/stop rpm set to 2500. I'd like to see how the AFR compares to your run that you posted at the start of this thread.
With lean spool on:
With lean spool OFF:
The AFR becomes about 1 point richer in the low-mid rpms with lean spool disabled.
Last edited by nj1266; Jun 2, 2007 at 03:29 PM.
You could do it that way Codgi, but to me the whole reason to do this is to have complete control over AFR at all times. Letting the lean spool do its thing at peak torque while maybe the best for spool (if you dont know what to do after its been disabled) isnt always best at peak torque especially with high boost.
JB
JB
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If you are using 91 octane in CA, then you will knock 5-6 counts on a stock Evo 9. Best thing to do is to get it tuned to run on this bad gas. Basically, you will have to back off the timing in the 5-7k range by about 1-2 degrees. That should take care of the knock.
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