MustangWorks.com : Ford Forums - View Single Post

QuantumMotorsports · 10-06-2003, 02:02 PM

As a general rule, any time you lessen the back pressure in an exhaust system, you loose low end torque and gain high end horse power, so a little back pressure is good for most stock engines. When you cut the pipes off, all of the bends and the friction on the wall of the pipe causes backpressure, you just lost all the backpressure behind the muffler so yeah, you can expect a small loss in low end torque. It's all good, take it to the track and see how it runs, your car may do better with more low end, depends on the setup.

10-06-2003, 02:02 PM	#3
QuantumMotorsports Registered Member Join Date: Jul 2000 Location: Norman, Oklahoma, USA Posts: 597	As a general rule, any time you lessen the back pressure in an exhaust system, you loose low end torque and gain high end horse power, so a little back pressure is good for most stock engines. When you cut the pipes off, all of the bends and the friction on the wall of the pipe causes backpressure, you just lost all the backpressure behind the muffler so yeah, you can expect a small loss in low end torque. It's all good, take it to the track and see how it runs, your car may do better with more low end, depends on the setup. __________________ Michael Black QuantumMotorsports Norman, OK 1984 LX Hatch 306 w/ TRW forged flat toppers, Comp Cams Magnum 292H, GT40P heads w/ 3 angle valve job, .550 lift springs, Angus Racing Roller Rockers, Weiand Stealth Intake, Holley 4150 650cfm carb, MAC 1 5/8 Long Tubes, Single Chamber Flowmasters, 91' T5 w/ Pro 5.0 shifter, Turbo Coupe 8.8 Rear w/ 3.55 gears, QA1 Motorsports tubular K member, no interior except steering wheel and seat. Coming soon: 6 or 8 point cage, Fuel Cell, Weld Draglites