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SammYyYyY · 02-06-2024, 02:10 PM

Hey all!

Soon I’m going to be installing a set of 1 7/8” Kooks longtubes, a Corsa Xtreme+ system (midpipe and axle-back), and a Rotofab Big Gulp intake on my 2018 ZL1 1LE. I was wondering if anybody had any insight as to what throttle body I should use.

My local shop (who will be installing and tuning the car) said that they can port the blower snout so we can fit a 103mm TB on there; my concern with this is that I won’t see much of a gain from porting just the snout and not the rest of the blower. Is this the case?

I could also do the classic LT5 + adapter plate; if I do this, will I see any real performance gains?

I’d love to hear anybody’s insight. Thanks!

02-06-2024, 02:10 PM	#1
SammYyYyY Drives: 2018 ZL1 1LE Join Date: May 2022 Location: Salt Lake City Posts: 153	Throttle Body Advice? Hey all! Soon I’m going to be installing a set of 1 7/8” Kooks longtubes, a Corsa Xtreme+ system (midpipe and axle-back), and a Rotofab Big Gulp intake on my 2018 ZL1 1LE. I was wondering if anybody had any insight as to what throttle body I should use. My local shop (who will be installing and tuning the car) said that they can port the blower snout so we can fit a 103mm TB on there; my concern with this is that I won’t see much of a gain from porting just the snout and not the rest of the blower. Is this the case? I could also do the classic LT5 + adapter plate; if I do this, will I see any real performance gains? I’d love to hear anybody’s insight. Thanks!