Quote:
Originally Posted by michaelpetersen3
Husker / Blue - All good. We're all in the learning mode, thx for your comments ;-)
Azlvr, the larger TB on the larger motor is directionally correct to improve HP. But it might not make any improvements if the TB is not in the critical path of the air flow resistance. You can test this either on the dyno, or on a flow bench (less common but cheaper way to test intakes).
If you have both TB's, use the larger 81mm, but don't expect much, and don't spend big $ to incorporate it. My 3.2L tests suggest you will find the most benefits from the exhaust flow improvements.
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I just installed the Fabspeed Maxflo cat back system and plan to go with their headers before bigger motor. I'll have 987 airbox and tubing with 81mm going into it.