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

THMotorsports in conjunction with Sound Performance is offering BOOST ACTIVATED EXHAUST CUT-OUT KIT.

Background:

These were primarily offered for Supra guys but this can be used for any vehicle that has forced induction. Offered by Sound Performance through THMotorsports. A partners in the industry, THMotorsports wanted to offer something that is unique, different and with proven performance.

Key Features:

- Stay's closed until ~10psi
- Runs off a boost actuator
- No electric solenoid failures
- Run off Hobbs switch or boost controller to adjust open delay
- All MADE IN THE USA
- Comes in several sizes

Description:

This is an incredible feature because it stays closed until you hit about ~10 psi and then it fly's open. You get a ridiculous sound but even better, you will pick up a significant amount of horsepower.

They are offered in several different variations and it's listed below accordingly.

http://spracingonline.com/upload/files/1/spbco.jpg
http://i52.photobucket.com/albums/g2...retexhaust.jpg

PRICING:

SP Boost Activated Exhaust Valve (includes: valve, actuator & actuator mount)
2.5″ - $359 SHIPPED
3″ - $369 SHIPPED
4″ - $419 SHIPPED

ADDITIONAL ITEMS

Y-pipe (Stainless)
2.5″ - $70 SHIPPED
3″ - $80 SHIPPED
4″ - $95 SHIPPED

Y-pipe (Aluminized)
2.5″ - $52 SHIPPED
3″ - $55 SHIPPED
4″ - $75 SHIPPED

MAC Valve = $50 SHIPPED
Hobbs Switch - $40 SHIPPED

3" Turndown (deflect exhaust) - $150 SHIPPED

VIDEO:

SP Boost Actuated Exhaust Cutout - YouTubeSound Performance Boost Activated Exhaust Cutout Results!!! - YouTube

hmmmm do want, these dont come with a switch at all?

i know what im buying this is a great idea..so basically you have to hook a vacuum line to the actuator on the exhaust then itll open at 10psi right? Also im guessing your gonna need to cut your downpipe/exhaust to weld this in?

This is a really sweet product.

You could always put a toggle in for on and of use.

or maybe not.Didn't look at it good the first time.

Yeah.... no toggle switch. Guys! This is epic. I personally would drive a stock exhaust for the ultimate sleeper look and then when I punch it, this thing would be a monster!!

- Jonathan

too bad my genesis can only push 7 PSI if I turbo it. :lol:

I can put a 5psi actuator on it. :cool:

i now want to know what a dump would sound like on a turbocharged 3.8 V-6....

Drool

Have you tested it on a Cobalt SS though?

could you make it 16 psi? i see 10 psi all of the time. lmao.

What would be the purpose of this when this item can be applied to any vehicle that has forced induction? What are you getting at here?

Yes. I can change the actuator for just about anything you'd like. I can do 15psi I believe.

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.

Always so defensive, he was just asking a question haha

My apologies if it comes off that way but text does not transfer emotion well. But there's nothing defensive about it. I like facts over "hear say." And he didn't ask a question, he made a speculative inquisition as to the supra not really making that much power in real world and thus this would be mean a cobalt will only make 5whp more. I don't follow speculation or gossip. I follow the facts on hand and its data. The data and dyno time shows directly that that boost cut-out WILL make more power and there was nothing fake about the 50whp+ more on the Supra. Also because I was there when they did the video considering it was filmed by a very good friend.

I think this would sell well for the 2.0T guys on Genesis Forum: GenCoupe Hyundai Genesis Forums - Your Hyundai Genesis Coupe Community

Oh I would LOVE to be on the gencoupe forums.... but I cant seem to get a moderator or admin to allow me to be an authorized vendor. I never get a response back.... just stone wall effect. Want to assist?

Thank you.

ya i can try to help man

It was a question hence the "?". But anyways I just dont want someone buying this expecting big numbers and getting let down. Best thing to do is have someone be your test mule and get a dyno number for opened and closed runs. Will this make more power? Im sure. Will it be worth it? Gotta wait and see

If someone thinks they will get 55whp+ more, that would not be logical. The Supra has much more displacement. But they will make more power period. This is fact. If anyone believes in bumping the boost, adding an intake or getting a bigger exhaust. This is just another viable solution for making more power. If someone wants to put it on and make more power, hey... more power to them. No pun intended. Let them share with the community.:cssNET:

Ill be getting me one later down the road. This product is genius. Might even set it up in my modular section in my downpipe for easy in and out.

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

you should start offering the Sound Performance quick spool valve ;)

anyone could buy the quick spool valve its universal if you have a t3,t4,t6 housing

My s2000 gained 43whp between open down pipe and a 3 inch exhaust

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.

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.

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..

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

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.

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.

no i totally misread the post, i thought they were offering a down pipe, the Y is all you are getting to begin with

so your getting the pipe for $349 and the additional Y pipe?......never seen a bolt with a 4in exhaust.

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.

Lots of questions to take on here. Hopefully I can put a lot of this to rest.

We already do but Cobalt owners are scared of these. :lol:

I believe it. That F20/22 motor loves to breathe!

I didnt see the post. Just coincidence.

Agreed. It must be weld in. This will never be direct bolt in.

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.

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.

Pricing is very clear above. You purchase the cut-out. any additional Y-Pipe would be extra.

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.