kws87

iTrader: (6)

How exactly do these work and what will they add to my car, I've seen a lot of people talking about them. Thanks

Divergent Lightning

iTrader: (6)

You put them in series with your exhaust. Usually before your cats or muffler. This causes a low pressure port that can be opened and closed at will. They are just electric valves (if you go for electric ones).

Allergik2dyin

Well here you go sweety, for your viewing pleasure.... http://www.quicktimeperformance.com/QTEC/

kws87

iTrader: (6)

thats what i needed, thanks

kws87

iTrader: (6)

so now that i know what it is, is it worth the 300 ???

formula001

iTrader: (1)

You can go with like the 30 dollar manual one to see how you like it first. Then you can either leave it manual or but the electric valve to open and close it from the inside. Which is pretty good if you go into the city or what ever. I just splerged and went with the QTP electric cut out right away, and i must say it sounds pretty bad ***.

Mudvayne

iTrader: (1)

So do cut outs hurt torque at all? I'm coming from owning a veesux stang and they don't have much backpressure and you lost some torque doing this

Bombguy99z28

Really depends on your current mods. I gained torque across the board, mods at the time (about 5 years ago) were lid, orp, catback. Generally you won't see any low end loss. You don't need back pressure, thats a fallacy, you need velocity though. If you lose too much velocity you may lose some low end / part throttle response.

silver T/A

$300 is alot 4 a cut out speed inc sells the electric 4 130 i think or it might be 150 not sure check there site.

HartAttack

iTrader: (8)

i have used a cutout on every car i had and seen no less than 10hp gain and no lower than 5tq gain. I always had a good flowing muffler so my gain wasnt as much as some would get. You can get a 3in cutout with the three wing nuts for $25 shipped from Summit racing. several friends of mine that had camed and headered cars running flowmasters gain 22rwhp....for $25 its worth it for sure.

HartAttack

iTrader: (8)

here is an example

highest numbers were with the cutout open, the other is threw the hooker catback. only lost 10.35hp and 3.72 tq threw the hooker

kws87

iTrader: (6)

thanks for the speed inc tip, its a lot cheaper there. Can you hook that up to the shift know if you buy one of the hurst sidewinders???

Firehawk441

iTrader: (41)

I haven't tested it on my new engine , but my old 383 made 15 hp and 3 ft. lbs. tq. at the wheels with the cut out open starting @ 4500 rpm's to 6700 rpm's.

MobileLurker

I was wondering how much it costs to get installed or if you can do it yourself. Sorry for the thread jack

n2o junkee

iTrader: (-1)

I have a 3 inch cut out with a wild cam and it sounds bad ***. I am running 3 inch piping to the stock muffler so when its closed it sounds like a rv or mild cam and when it's open it sounds like a beast. Even if I didn't gain any hp from it I would still want it just for the lovely sound of a wild cammed ls1 with open long tubes