Better known as HPC, High Performance Challenge is a driving experience. It is an introduction to on track driving; the skills involved, the performance limits of your vehicle, and an exposure to the sport of motor racing.
Im using s90 on civic b20b but now getting prob on unstable idling n heard many user facing same problem bcs of vacum leak. Some said using 1gen S90 throttle body not facing idling issue. Some of bengkel said S90 itself prob ( most my frenz using on cibiv b series).
I was tried some method to get stable idling like TPS adjust, Iacv clean n etc. no check engine but still getting prob. 1 more wat the diff cooper butterfly wif crom butterfly? Any diff?
Try getting others brand as Skunk2...
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