Quote:
Originally Posted by Opposed
I thought the same thing too, but I think its intake sound. He recently revised a more aggressive cam timing map in that RPM range to help with more mid-range.
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thanks for your reply. it's more like ta-ta-ta-ta sound so i doubt very much its intake sound. this sound is quite common with my previous rides on lower octane gas but i don't think i've ever heard this on my 86 before ecu flash.