exhaust causes loss of power?

[silvette]

right now my 2001 4.8 is stock, but I plan to install the Force II cat-back system from flowmaster (along w/ other mods). but I have heard that this will cause loss of power. i don't plan on taking the truck to the drag strip but at the same time I don't want to lose any power. any help would be nice, and thanks in advance

[TweakedGM]

I had power loss on my 1996 5.7 because of wrong exhaust. I had 2" pipes suck the power back then I put on 2 1/2" works alot better now.

[gtmud]

If the kit is made for your engine, than you should be fine.I wouldn't go beyond the 2.5" tail pipes.

[Redneck_Cadillac]

putting new exhaust on a vehicle can either gain power or cause you to lose it.

too small of a diameter pipe: constricted exhaust gases and less HP's

too large of a diameter: not enough back pressure and loss of power.

without proper modifications to your management system, making any drastic change can rob you of HP's...........

[Chevy_girl00]

Another thing you may want to watch is gas mileage. Keep a record of your gas mileage before you get exhaust and after and then compare. And as far as power goes: i agree with gtmud ^, just make sure you get the right kit and pipes. Good Luck!