how much horsepower will this add?

Question

i bought a flowmaster muffler for my car, and i wanna know how much horsepower will it give it? my car is a kia spectra 2003. believe it or not but my kia is all racy looking now, all i need is noise and more horsepower.

Answer 1

you'll probably get a few if any, unless you do something with the intake system too, changing the exhaust is basically just for noise. Also with your foreign car it's gonna sound like a weed wacker.

Answer 2

Probably not much but it'll sound cool..

the engine controller is tuned to run with the factory exhaust system in place and it counts on having a certain amount of backpressure. the flowmaster muffler is a simple baffle type muffler designed for low backpressure for better flow. if are redoing the entire exhaust system then great make sure you buy one that is tuned by a pro or made for that car / engine combination. after that you need to retune the engine controller (they sell a chip for that usually) id you do all that you can expect a little more out of your engine.. again not much, 10 hp maybe, add a camshaft upgrade to the mix and maybe 15 - 30, add a bigger throttle body... more yet.. then theres porting and polishing.. turbo's,,, speeds a question of money.. how fast ya wanna go?

Answer 3

Mr. "Mechanic" from Detroit is mistaken. You wil get a 3-5 percent hp increase over your stock muffler. Stock mufflers restrict exhaust flow, resulting in backpressure which robe your engine of horsepower by making it work harder to expel exhaust gasses from the cylinders during the ehxaust stroke.
Free flow mufflers reduce the back pressure.

Two summers ago, I built a Saturn SCII street racer with my 17 year old daughter. Cool air intake, headers, free-flow cat and catback exhaust increased hp by about 35 percent.
A mild race cam, power chip and wet shot nitrous turned it into a 13 second car.

Its lowered 3" and has 17" wheels.

Answer 4

Nitrous Oxide. referred to as the Supercharger in a bottle. a stable dry equipment could be offered on line for $3 hundred - $500. you will desire to upload 50 - seventy 5 HP. much greater in the journey that your are prepared to threat breaking areas. A dry nitrous equipment could be put in in an afternoon while you're reachable with equipment and can stick to guidelines. Exhaust equipment provides you with 10 - 15 HP at terrific. Nitrous is larger chilly air will in basic terms get you approximately 15 HP. Nitrous is larger. rapid charger or great charger can get you 50 - a hundred HP. yet expenditures $one thousand - $2000. Nitrous is larger Heads, cam, intake and headers can get you greater capacity. Very costly. Nitrous is larger. A chip components you approximately 25 greater HP on a V6. it is going to value you $a hundred and fifty or so. Nitrous is larger. would desire to alter out V6 for a 350. costly. could be greater suitable off finding for a 350 Camaro instead.

Answer 5

The amount of horsepower really doesnt change all that much or at all. Your vehicle is what it is and there isnt anything you can really do to it that will make it a "race" car.

Answer 6

80 1/2

Answer 7

i think mufflers give 5% increase in horsepower but if your car has 80hp 5% of that is 4hp so now you have a wopping 84horsepower good luck

Answer 8

Probably a few hp extra. It will sound better and you may get a little better mileage, unless you put your foot into it to hear the pipes sing. good luck.

Answer 9

1/2 so that put it up to 78 and a 1/2......

Answer 10

not enough to notice anything but more noise.