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Tim M · 12-17-2023, 11:05 AM

Anyone try extrude honing the OEM exhaust manifolds?

I'd like to stay with the OEM setup due to visual/emission restrictions and realize the manifolds and likely more so, the inlets to the cats are my next limiting factor. Amazing the engine makes 650 HP thru that tiny openning especially on the driverside...

Extrude honing used to be advertised a good bit, but don't hear about it much now.

I realize a set of tubular headers is the optimum answer...

Thanks.

12-17-2023, 11:05 AM	#1
Tim M Drives: 2018 Camaro SS 1LE Join Date: Jul 2018 Location: Stuttgart, Germany Posts: 903	Extrude Hone OEM Manifolds Anyone try extrude honing the OEM exhaust manifolds? I'd like to stay with the OEM setup due to visual/emission restrictions and realize the manifolds and likely more so, the inlets to the cats are my next limiting factor. Amazing the engine makes 650 HP thru that tiny openning especially on the driverside... Extrude honing used to be advertised a good bit, but don't hear about it much now. I realize a set of tubular headers is the optimum answer... Thanks. __________________ 2018 SS 1LE German Based Nurburgring Visit #19 202 MPH Ring Laps: 86