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THMotorsports: Boost Activated Exhaust CUT-OUT .... MORE HORSEPOWER !!!

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Old 08-17-2012, 09:54 PM
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i guess the issue or questions are how to make this fit on the cobalt, this section looks like it would replace a big section if not the entire downpipe, you have to remember LNF's don't have a two piece downpipe with a separate up-pipe and midpipe like on a lot of other turbo'd . So is this piece truly bolt on? Idk it seems like a cool idea, wish it was louder like an o2 dump but its a step in the right direction for people i guess
Old 08-18-2012, 02:23 AM
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you should start offering the Sound Performance quick spool valve
Old 08-18-2012, 09:32 AM
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anyone could buy the quick spool valve its universal if you have a t3,t4,t6 housing
Old 08-18-2012, 09:36 AM
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Originally Posted by 09BlueBaltSS
Was the exhaust on the supra pinched closed? I mean c'mon, 50whp with the cutout open. Real world results for us would be in the 5whp range. 10whp on a stock exhaust car maybe.
My s2000 gained 43whp between open down pipe and a 3 inch exhaust
Old 08-18-2012, 09:58 AM
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Lol I just brought these up a week ago. You didn't happen to see my post did you? Or is this just a coincidence. I'm surprised it's taken the cobalt world so long to catch on to these.
Old 08-18-2012, 10:29 AM
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Originally Posted by JacBlackSS/TC
i guess the issue or questions are how to make this fit on the cobalt, this section looks like it would replace a big section if not the entire downpipe, you have to remember LNF's don't have a two piece downpipe with a separate up-pipe and midpipe like on a lot of other turbo'd . So is this piece truly bolt on? Idk it seems like a cool idea, wish it was louder like an o2 dump but its a step in the right direction for people i guess
It would be the same way as putting in an electric cutout now, you gotta weld in a new section to the downpipe. No cutout is gonna be bolt in on a cobalt.
Old 08-18-2012, 02:32 PM
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so wut would u need to fit this would i have to replace my hahn 3in exhaust ?...I am also bout to order the ZZP exhaust manifold and i need a new downpipe so this is why i ask..
Old 08-18-2012, 09:29 PM
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Originally Posted by TommyP
It would be the same way as putting in an electric cutout now, you gotta weld in a new section to the downpipe. No cutout is gonna be bolt in on a cobalt.
two things, first you should play the lottery b/c you just brought these up the other day lol second i figured that much, but it looks like the example pipe on the supra is extremely long, so not too sure how much cutting and welding will be required... idk
Old 08-18-2012, 09:53 PM
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You would only need to "Y" off the bend on the downpipe like that first picture shows. That's how electric cutouts are installed now. No matter what you will need to do some cutting and welding.
Old 08-18-2012, 10:20 PM
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Originally Posted by JacBlackSS/TC
anyone could buy the quick spool valve its universal if you have a t3,t4,t6 housing
Yes and anyone could buy this cutout from sound performance, that is not the point, if TH Motorsports offered it I could get it from them for possibly a better price.
Old 08-19-2012, 12:36 AM
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Originally Posted by TommyP
You would only need to "Y" off the bend on the downpipe like that first picture shows. That's how electric cutouts are installed now. No matter what you will need to do some cutting and welding.
no i totally misread the post, i thought they were offering a down pipe, the Y is all you are getting to begin with
Old 08-19-2012, 01:53 AM
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so your getting the pipe for $349 and the additional Y pipe?......never seen a bolt with a 4in exhaust.
Old 08-19-2012, 02:35 AM
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Originally Posted by TommyP
Lol I just brought these up a week ago. You didn't happen to see my post did you? Or is this just a coincidence. I'm surprised it's taken the cobalt world so long to catch on to these.
Lol I remember that thread too..

I'd be interested in one of these if it didn't require pain in the ass of getting it welded onto the DP. Maybe sometime down the road though...

Definitely waiting to see some videos of guys on here that purchase one.
Old 08-21-2012, 11:34 AM
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Lots of questions to take on here. Hopefully I can put a lot of this to rest.

Originally Posted by BlkWdoSS
you should start offering the Sound Performance quick spool valve
We already do but Cobalt owners are scared of these.

Originally Posted by kxrida2000
My s2000 gained 43whp between open down pipe and a 3 inch exhaust
I believe it. That F20/22 motor loves to breathe!

Originally Posted by TommyP
Lol I just brought these up a week ago. You didn't happen to see my post did you? Or is this just a . I'm surprised it's taken the cobalt world so long to catch on to these.
I didnt see the post. Just coincidence.

Originally Posted by TommyP
It would be the same way as putting in an electric cutout now, you gotta weld in a new section to the downpipe. No cutout is gonna be bolt in on a cobalt.
Agreed. It must be weld in. This will never be direct bolt in.

Originally Posted by Nfamous60
so wut would u need to fit this would i have to replace my hahn 3in exhaust ?...I am also bout to order the ZZP exhaust manifold and i need a new downpipe so this is why i ask..
You dont have to replace an exhaust. This is very simple. The unit is placed in line anywhere on your exhaust system piping. The best placement and the most logical is at the bottom of your downpipe or in-line with the downpipe. Get the exhaust system you want. Bolt on your new exhaust system then go to a reputable exhaust shop and have the cut-out installed in line.

Originally Posted by TommyP
You would only need to "Y" off the bend on the downpipe like that first picture shows. That's how electric cutouts are installed now. No matter what you will need to do some cutting and welding.
Originally Posted by BlkWdoSS
Yes and anyone could buy this cutout from sound performance, that is not the point, if TH Motorsports offered it I could get it from them for possibly a better price.
You could but the point here is that we offer better customer service, we are easily accessible for any questions and we offer a better price that Sound Performance does online. Want to order from the source? Sure! Place your order with SP any day, I'm glad to support my buddies over there but they are tough to get on the phone sometime.

Originally Posted by Nfamous60
so your getting the pipe for $349 and the additional Y pipe?......never seen a bolt with a 4in exhaust.
Pricing is very clear above. You purchase the cut-out. any additional Y-Pipe would be extra.
Old 08-22-2012, 03:12 AM
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Originally Posted by thmotorsports

We already do but Cobalt owners are scared of these.

You could but the point here is that we offer better customer service, we are easily accessible for any questions and we offer a better price that Sound Performance does online. Want to order from the source? Sure! Place your order with SP any day, I'm glad to support my buddies over there but they are tough to get on the phone sometime.
Wish I had known when I bought mine, Im a cobalt owner that isnt too scared to use them. As far as I know, Im the only cobalt owner that uses one.

I agree with it being hard to get SP on the phone, it took me several days at times while I was waiting on getting the valve.

Im actually going to remove the Hobbs switch and go with a custom setup. I hate having the extra wiring and solenoids with no place to mount them.
Old 08-22-2012, 10:54 AM
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Originally Posted by BlkWdoSS
Wish I had known when I bought mine, Im a cobalt owner that isnt too scared to use them. As far as I know, Im the only cobalt owner that uses one.

I agree with it being hard to get SP on the phone, it took me several days at times while I was waiting on getting the valve.

Im actually going to remove the Hobbs switch and go with a custom setup. I hate having the extra wiring and solenoids with no place to mount them.
That's awesome that you're using the SP QSV !!! I thought no one on the Cobalt community used one. That's awesome. PM me and I'd like to ask you some more questions about your setup.

Thank you!
Old 08-22-2012, 12:05 PM
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Absolutely genius!

I'd do this now that I want to run a catted dp. No loss now, only gains!
Old 08-22-2012, 12:32 PM
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Old 08-22-2012, 06:30 PM
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Old 10-08-2012, 02:49 AM
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wanted to bump this to see if anyone has brought into this yet, where is the quick spool link?
Old 10-10-2012, 02:40 PM
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Back up top!
Old 10-11-2012, 01:18 AM
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no one has brought this yet...smh well im in to buy in 2weeks, th motorsports how much are you offering the qsv for?
Old 10-11-2012, 06:15 PM
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Ny chance of teaming up with someone and offering the cutoff already attached to the dp that would be a definite buy for me
Old 10-11-2012, 11:52 PM
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everyone had a diff downpipe, not sure if they iffer maybe the treadstone downpipe, treadstone has a combo buy for their intake and downpipe for $400 str8.
Old 10-12-2012, 12:03 AM
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Just saying it would be a good addition. Add the cutoff to the dp and sell as a package deal


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