I've got a DMH electric cutout left over from my Trans Am and I've been thinking about putting it on the Cobalt. I know it won't help power any but I would just like it there for the extra noise. Would putting it in the catback right behind where the DP bolts up hurt anything?

 

it wont hurt anything. you might notice some power loss thats about it..... the stocker doesnt flow enough to benefit from a cutout imho but if your using it for noise who cares. its just like a athmospheric blow off valve on a stock turbo setup...pointless unless you want more noise.

 

I think it's a bad idea.

 

The loss of power will make it not worth it. My buddy did it on his MS3, it is a pretty considerable power loss.

 

Just get a bigger turbo then

 

I would definitely do it!!! I used to love using cutouts because you could keep the stock exhaust for emissions and whatnot and then flip the switch and BANG!

 

It sounds cool but you are literally throwing away horsepower, unless you go bigger on the turbo . But to each his own!

 

Might want to be mindfull of ground clearance before the install. I have a y-pipe on the downpipe (pre-cat) and it's not there to make noise-only been open a few times. I realize we have a small turbo that spools quickly but I find it hard to believe I LOST power. Never dynoed so idk-my .02

 

Turbo doesnt flow enough air to compensate a cutout

 

Mine does

 

any dyno sheets and videos proving that you make more power with the cutout open then closed?

 

when open there is less back pressure so it will make the turbo spool faster, may lose a little bit of power but shouldn't be all that noticeable. my best friend had a 3" DP and 3" QTP on his WRX (stock otherwise) and that thing was a freak

 

Nope, your just gonna have to take my word for it. Plus I don't even have the cut out anymore, the motor broke on it or just goggle it.

 

Ive seen a k04 on our dyno with an open cutout vs a 3" catback. It lost power. Sure its nothing your butt dyno would drastically notice. I had a qtp cutout onboth my efr and my 5557 setup... i only had it to make some noise

 

My butterfly always leaked so i took it off.

 

The stock turbo spools quick enough. It really is not worth the trade off. No sense hacking stuff up just for the sake of hacking stuff up, and then in addition it just hurting you. They sound sweet, I'll give you that, and I am all for pointless noisy mods, as long as they don't hurt my power though!

 

I've just never seen the point of making a 4-cylinder loud. They just don't sound right, so why make that crazy sound any louder?

 

cutouts leak quite a bit.... atleast the electronic ones... i think theres a company that offers a lifetime warrenty with theirs and its not qtp.... dont buy the cheap ass chinese cutouts either..... we had brand new ones on one of our ls3 swap cars the guy HAD TO HAVE and they couldnt even stay shut LOL

anyways heres my cutout placement....its pefect. (keep in mind this is on a big turbo setup) worked on both my efr and my 5557 setups and not an inch of ground clearence loss

 

Looks good. So how much more hp can be had with it fully opened on your big turbo? Did you seen an boost increased? I wished I could of put mind the same place where you have it but no such room on minds.

 

The gains werent worth it imho. The spool wasent all that much faster either especially with the efr which spools fast already. You notice it a lot more on real large frame turbos. It just made for a cool noise maker lol. I love the sound of the turbo wistling but in all honesry it was closed and i eventually took it off. Ill be selling off my old setup soon. Staying stock turbo this time around.