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.




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?

 

What kind of switch are we talking about here? If you're talking about a Hobbs Switch. That would be no because a switch is not needed unless you are going to raise the transition opening to something different other than ~10-11PSI. I can put a different actuator rating on there if ANYONE would like. It's always going to stay closed unless you break over the ~10PSI mark. But.... if you want to set it something higher you can control it a few ways:

- Manual Boost Controller
- Hobbs Switch
- Electronic Boost Controller
- Choose the appropriate wastegate actuator spring rating for something higher

 

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?

 

Exactly !!!

 

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.

 

I can put a 5psi actuator on it.

 

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.

 

False. That supra had a 4" downpipe and a 3.5" axle back exhaust. So there was nothing "pinched" about it being that at it's smallest point it was 3.5".

Will a lower displacement motor such as the Cobalt reach 55whp gains on a stock turbo? Absolutely not and nor did I infer you would. I merely gave an example as to this part allowing for more power to happen along with the unregistered statistics such as turbo response and transition time between shifts that can not be measured. Remember, NASCAR says it best and it's true, "the best exhaust....is no exhaust at all." And this holds true in N/A and especially turbo.

 

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.

 

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.