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I am thinking about getting a much smaller pulley on my CTSC (like 3.2 or 3.4 inch) on my stock HG and lowering my rev limiter to 8 or 8500 rpm.
The idea is to increase torque/hp in the lower rev range (lowering vtec engagement to like 4200 rpm) and not use all 9000 rpm to ease valvetrain abuse.
I am building a track car and I thought the smaller pulley might really help with low end. I would keep rev's low to keep intake air temps reasonable and also to ease the burden on the valvetrain.
Can I get your thoughts? Sideways and JohnZ? Anyone else?
It looks to me like you need to retune with your aem. drop your vtec engagement into the 4400 4500 range. It will smooth out your power curve and give you smoother acceleration. That way you won't find boost and vtec all engaging at once as you come out of a corner. If you run a test pipe as well, you'll find some nice hp gains at midrange rpms and can tune so you build hp all the way to 9g rather than reducing your max rpm to accomodate a smaller pulley.
Originally Posted by fltsfshr,Sep 25 2007, 05:54 AM
It looks to me like you need to retune with your aem. drop your vtec engagement into the 4400 4500 range. It will smooth out your power curve and give you smoother acceleration. That way you won't find boost and vtec all engaging at once as you come out of a corner. If you run a test pipe as well, you'll find some nice hp gains at midrange rpms and can tune so you build hp all the way to 9g rather than reducing your max rpm to accomodate a smaller pulley.
fltsfshr
My dyno plot is old, it's tuned on a VAFC 2 and I mentioned at the top that I am going to drop my rev limiter to keep air intake temperatures down and reduce valvetrain wear.
High boost supercharger guys
