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jaykay · 12-02-2018, 09:57 PM

I have noted that the IPD folks offer a comp. plenum utilizing a GT3 TB @ 82mm for a Cayman 3.4. Does this large TB work well with the 3.4? What is the driveability like? I would think it would be great 5K + but that is it.

Perhaps those of you with 3.4, 3.6, 3.8 engines bored out from a 3.2 L and IPD plenums have this set up. Do you use the 74mm TB or the 82mm?

Would the 3.2 IPD plenum / 74mm TB work just as well at the larger displacements?

12-02-2018, 09:57 PM	#1
jaykay Registered User Join Date: Sep 2009 Location: toronto Posts: 2,668	GT3 throtte body on a 987 Cayman I have noted that the IPD folks offer a comp. plenum utilizing a GT3 TB @ 82mm for a Cayman 3.4. Does this large TB work well with the 3.4? What is the driveability like? I would think it would be great 5K + but that is it. Perhaps those of you with 3.4, 3.6, 3.8 engines bored out from a 3.2 L and IPD plenums have this set up. Do you use the 74mm TB or the 82mm? Would the 3.2 IPD plenum / 74mm TB work just as well at the larger displacements? __________________ 986 00S