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Message: <blockquote data-quote="fastclubman" data-source="post: 1063942081" data-attributes="member: 7030">i have been using the ITB setup on my 4g93 wout mivec for a couple of years now and it has been performing flawlessly. sizing of the bodies and the overall length of the bodies + manifold+ trumpet is important to achieve power to be produced at the desired rev range. And this can be altered to suit your requirement, i.e if you want stronger mid range, or top end for example, by simply varying the induction length. Also the exhaust header setup is important, I have to date dyno tested about 4 different header on my car and with varying results. The power curve is important to determine the gearing setup, as you would always want each gear to fall right in the powerband when shifting up and this cannot be done simply by just altering the final drive. Perhaps if you have a very flat torque curve and linear pull thru your rev range, then this problem can be masked, but generally this is not the case.also i would avoid stock rods for 9k rpm application, or at least you should have some arp rod bolts, to prevent rod stretch which results in spun bearing. i know some still use still stock rods, but if reliability and durability of the engine is important then its a point worth considering.</blockquote>

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