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66StangGuy · 03-01-2002, 01:29 AM

The other day i took off my exhaust system and just keep my headers.. Love the sound it makes.. turns everyones head. anyway. i know that with that i have a big power loss.. from what i understand thats because of no back pressure.. but wouldnt back pressure help? no resistance on the valves trying to close? then would changing from a 2 1/2 exhaust with dual flows to a 3in headder and 4 foot long 3" pipes and turn downs make me lose power too?

03-01-2002, 01:29 AM	#1
66StangGuy Registered Member Join Date: Feb 2002 Location: Diamond Bar Posts: 258	exhaust question The other day i took off my exhaust system and just keep my headers.. Love the sound it makes.. turns everyones head. anyway. i know that with that i have a big power loss.. from what i understand thats because of no back pressure.. but wouldnt back pressure help? no resistance on the valves trying to close? then would changing from a 2 1/2 exhaust with dual flows to a 3in headder and 4 foot long 3" pipes and turn downs make me lose power too? __________________ 66 mustang-292-Holley 4160-World Castings Windsor Sr.-Hooker super comp headers-MSD box & Coil.3.55 gears. B&M Z-Gate-Black leather racing seats with 4pt harnes.