Alright, I have very little knowledge of these systems but what is their basic function? Does it eliminate too much back pressure/what are the cons of having one? I have a 2.4 and what could I expect to gain from an electric cutout? I'm really a newb, as I know very little about their exact function, but I like the idea of pushing a button to make the car quiet (can't do a catback because the parents would most definitely notice) haha

 

i am just getting in to them too lol basically it just dumps the exhaust right under the car when you open it up and when it is closed the exhaust goes through the whole system........ it will make it so there is like basically no back pressure (i believe) and i saw someone say that the gained 20whp (on a turbo car) when it was open compared to closed...... i am getting one for my ss/tc so i don't have to spend the money on catback



EDIT YOU WILL MORE OR LESS GAIN WHAT YOU WOULD HAVE GOTTEN FROM A DP AND CATBACK WITH JUST THE CUTOUT(attached to a new dp ofc course lol)........ if not a lil more

 

Damn though, if I'm not boosted it sounds like an easy way to fry the valves. The le5 likes backpressure too much for a cutout to be healthy. I mean, couldn't you go a cutout right before the muffler for increased bp?

 

Yes, less backpressure on a turbo car is good... A N/A car, the point for one would be minimal gain of power, but a huge gain in sound. And you can always have it quiet going through the stock catback.

I like the idea of E-Cutouts.

 

dunno..... and i don't think you would **** anything up with a cutout...... don't quote me on that tho cause i am only just getting in to them but i have seen N/A cars with electric cutouts

exactly what i am doing..... (attempting to be a sleeper)

 

I guess what I'm going off of is, my buddy's old lt1 trans am. He had longtube headers dumped and he just didn't have enough bp and fried the valves. And that block is much stronger than mine. Perhaps I could go for a quieter catback. The GMPP seems to be quiet, but still have a good strong hone to it.

 

These are only beneficial on a boosted car. On an N/A car, such as a 2.4SS, it wouldn't yield good results. If anything, it might actually hurt your performance.

 

truth

 

NA car does not need a E-cutout...

 

Yeah, I figured such a lack of backpressure would majorly cut torque or damage the engine. I just didn't really know how a cutout worked. Thanks guys, I'll just probably try to get a GMPP catback as soon as I can afford it.

 

To my knowledge most of the back pressure in a stock exhaust comes from 1st the header then the DP, I doubt you would actually damage your engine by installing an electronic cutout after the DP.

 

You wouldn't "damage" your engine, but it also wouldn't be beneficial in any way either. Just a waste of money really.

 

ud get more loss then gain and itd sound like crap sry if u go boost then hell ya itd sound like a damn semi haha

 

you dont have to put the cutout right at the header. I was considering putting one after my high flow cat, maybe even after my resonator. just to bypass the stock muffler which is the main restriction.

through the muffler on the street, dump after cat on race day.

 

Yeah, I kinda rambled 2 sentences together there. But this basicly sums it up.

 

what about if you have a supercharger

 

That's right guys, freer exhaust on an N/A car would kill all horsepower and torque...best to put a 1" ID exhaust on it to get INCREASED backpressure and HIGH exhaust flow to increase torque...I figure increased backpressure with a 1" ID exhaust is good for another 35 lbs ft of torque and 60HP!!!!

Please stop the nonsense with the fried valves and backpressure and losing HP with a freer exhaust...EVERY NA car I've run on a track ran faster with an open exhaust compared to a closed exhaust -- EVERY ONE! This car is no different...as long as you leave the cat alone and install the cutout after the cat your ECM will be able to control the fuel ratio. I ask those that keep saying these incorrect things to go to the dragstrip and test it yourself...just unbolt the exhaust at the cat-back connector and try it...the truth may set you free!!!

 

so whats the verdict, would the cutout give any gains in anything if it was installed behind the cat and in front of the muffler?

 

same gains as a free flowing catback exhaust system, but louder

 

why cant the cut out be installed before the cat?

 

it can. but unless you are turbo it will just kill your torque and sound like ass.

 

cool, so in other words i could put 1 before the cat.

 

Nothing to prevent it -- just hardly any room. Without the cat you'll get a CEL when you run it open -- unless you can tune it out. Won't hurt anything, 'cept your ears