Boost activated cutouts?

[blitz1029]

http://www.spracingonline.com/store/_SP_Exhaust_Cutout_3/_/___Boost_Activated_/3673

Thinking about getting a set of these. Anyone try these out yet?

 

[goingbyebye]

I had them on a supra. Between shifts they close and you have to build boost again. Real pain in the ass. Once it finally opened again good to go but dyno showed loss of power when waiting to open. On the order of 30+ whp closed. If held open good to go. I switched to an electric QTP. All in all just a gimmick.
Joe

 

[Jmurrz]

I had them on a supra. Between shifts they close and you have to build boost again. Real pain in the ass. Once it finally opened again good to go but dyno showed loss of power when waiting to open. On the order of 30+ whp closed. If held open good to go. I switched to an electric QTP. All in all just a gimmick.
Joe

I would think that because on a supra you have some lag and need some time to build boost... Most of the Cobra's out there are supercharged and there is no lag time to build boost. I think that is a cool idea and would be curious to see how it works on a supercharged car. Not to say that a regular electric cutout wouldn't work, but you wouldn't have to worry about opening and closing it.

 

[SVT_Troy]

I think a throttle actuated cutout would be a lot cooler. Kind of like the C6 Vettes butterfly valves that open as the throttle is applied and fully open at WOT

 

[Juiced46]

I would think that because on a supra you have some lag and need some time to build boost... Most of the Cobra's out there are supercharged and there is no lag time to build boost. I think that is a cool idea and would be curious to see how it works on a supercharged car. Not to say that a regular electric cutout wouldn't work, but you wouldn't have to worry about opening and closing it.

This is the turbo section so I am pretty sure he is talking about doing this on a Turbo Cobra Atleast I would hope.

 

[MG0h3]

I agree with goingbybye. I could see them working in an auto. Open DP vs closed exhaust requires a different tune. I see too many problems for them to be worth it.

I ran my turbo 5.0 with no mufflers and man it sounded awesome. Still spooled like great but wasn't overly noisy or fumes in the car.

 

[Juiced46]

A new tune is not required for open or closed DP. I ran my car with a 3" electric cutout for years. Tune was always spot on either way. I have built a few other turbo Cobras and never had the need for a retune running electric cutouts. As long as your tuner knows what he is doing you are good to go.

 

[Venomous 03]

Cutouts are used to make boost faster,so why use them AFTER boost is made?

A WOT activated cutout would be alot more functional and noce on the street,driving around normal and open when your on smash mode

 

[fulanititoo8198]

I'm going with Electric cutouts just open them up for track/racing and close them back up without worrying about what they are doing. I do envy the setup in the C7 Stingrays goes from silent to nearly straight pipe, but ti seems to complex to add on.

 

[Jmurrz]

This is the turbo section so I am pretty sure he is talking about doing this on a Turbo Cobra Atleast I would hope.

Thought it was just Terminator talk. Sorry!