Nitemare9

Is there any advantage to changing to a larger throttle body, say 82mm like a gt3
for a 3.8l Engine???? I s there any HP/TQ gain???? I have a 2011 Carrera S, cab.
Can you give me a link to where I can find one???

ogun228

https://rennlist.com/forums/997-foru...est-video.html

cwheeler

That video says no benefits on the 3.6. Many say the 3.8 benefits, it comes on the dfi engine,... so I dunno. Not gonna hurt. But perhaps not help.

Cw

bmwfan328

all 997.2 already have the larger 82mm throttle body of the GT3 as standard from the factory.

Nitemare9

Thanks, I didn't know. Bill

Petza914

Unless you also change the airbox to have a larger opening on the outlet, going from a smaller aperture (airbox) to a larger one (GT3 throttle body) actually slows down the Velocity at which the air is moving. If you think about the improvements that a ram air effect has by increasing the Velocity at which the air is moving, I believe this has the opposite effect so although it can allow more total air through, those gains are offset by the air going slower. I don't think that mod is worth the money. I think you see better gains by changing to the stock side ipd plenum that keeps the air velocity up but makes it less turbulent inside the plenum from the Y design instead of the OEM T design.

Nitemare9

I have the IPD plenum. and the Fabspeed air box.
Bill