FS: Sound Performance 3" boost activated cutout
05-27-2012, 05:04 PM
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Sound Performance 3" boost activated cutout
I'm getting rid of my SP stainless boost activated cutout. With my old exhaust system I was stuck in the mid 500's on the dyno no matter how high the boost went. I added this cutout 18" from the turbo and was able to re-dyno for 652hp.
Helps reduce back pressure to allow the turbo to breathe while not forcing a person to run a huge 4" straight exhaust all the time.
It's 2 years old but I only started using it on my car last November. 1 oil change since it has been on the car so roughly 3000 miles of use.
The actuator included from SP opens completely at 11psi and I wanted to open it sooner so I installed an actuator that is fully open at 7psi. Both are included in the sale so a person can choose which one they like the best.
400$ new for this piece. With the extra actuator I would like 300$ shipped in the lower 48 states.
paypal: jeffbinder@gmail.com
Helps reduce back pressure to allow the turbo to breathe while not forcing a person to run a huge 4" straight exhaust all the time.
It's 2 years old but I only started using it on my car last November. 1 oil change since it has been on the car so roughly 3000 miles of use.
The actuator included from SP opens completely at 11psi and I wanted to open it sooner so I installed an actuator that is fully open at 7psi. Both are included in the sale so a person can choose which one they like the best.
400$ new for this piece. With the extra actuator I would like 300$ shipped in the lower 48 states.
paypal: jeffbinder@gmail.com
06-06-2012, 04:08 PM
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I wanted the valve open sooner than 7psi since I have stock exhaust. Back pressure was building up before it opened. I put am electric cutout and open it manually now. Pita but whatever gets the job done
06-06-2012, 06:11 PM
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Well that's with the exhaust cutout.
Depending your power level it can help a lot. I was stuck at mid 500 with my borla true dual so I went to stock with a cutout. Any chambered muffler will be restrictive at high hp.
Depending your power level it can help a lot. I was stuck at mid 500 with my borla true dual so I went to stock with a cutout. Any chambered muffler will be restrictive at high hp.
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07-16-2012, 07:51 AM
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Don't need this thing sitting around and I'm trying to get rid of spare parts to clean my garage out.
I know someone wants high hp without needing a crazy loud straight through exhaust system. This is the key!
250$ shipped
I know someone wants high hp without needing a crazy loud straight through exhaust system. This is the key!
250$ shipped
07-16-2012, 09:29 AM
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what did it do the low end/ driveability? Any impressions on running it open?
07-16-2012, 01:37 PM
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The electric cutout? I'm not sure what the last question is in requests to. I have stock exhaust so I can't compare it to leaving it closed. I would never get this power closed.
driving didn't change.....not sure how it could ever affect the way a car drives so elaborate on what you think it would change.
Between the 7psi and cutout open I don't know if it made a difference since I haven't been back on the dyno to compare.
If I remember I'll try to get a crappy in cabin phone recording. I don't go out driving much with it being this hot though
driving didn't change.....not sure how it could ever affect the way a car drives so elaborate on what you think it would change.
Between the 7psi and cutout open I don't know if it made a difference since I haven't been back on the dyno to compare.
If I remember I'll try to get a crappy in cabin phone recording. I don't go out driving much with it being this hot though
07-16-2012, 01:52 PM
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id assume that it would drive differently when not in boost.. I have a large single turbo and an X02 exhaust, so not stock, but its not amazing by any means lol.
I was looking to get your feedback on "butt dyno" changes, around town on the street when not going all out.. if you didnt notice any real differences, thats a great thing to hear and probably answers my q right there.
I was afraid that running it open in traffic would have negative effects aside from sound n smell . Ive never owned an FI car.. so I still have the mindset of NA for now i suppose.. i suppose it would actually decrease lag versus increase it as i had thought..or at least get it spinning into boost earlier.
anyhoo, yeah if you end up w vids lmk, PM is cool, I certainly dont mean to thread jack, but at least its free bumpz.
I was looking to get your feedback on "butt dyno" changes, around town on the street when not going all out.. if you didnt notice any real differences, thats a great thing to hear and probably answers my q right there.
I was afraid that running it open in traffic would have negative effects aside from sound n smell . Ive never owned an FI car.. so I still have the mindset of NA for now i suppose.. i suppose it would actually decrease lag versus increase it as i had thought..or at least get it spinning into boost earlier.
anyhoo, yeah if you end up w vids lmk, PM is cool, I certainly dont mean to thread jack, but at least its free bumpz.
07-17-2012, 06:12 AM
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id assume that it would drive differently when not in boost.. I have a large single turbo and an X02 exhaust, so not stock, but its not amazing by any means lol.
I was looking to get your feedback on "butt dyno" changes, around town on the street when not going all out.. if you didnt notice any real differences, thats a great thing to hear and probably answers my q right there.
I was afraid that running it open in traffic would have negative effects aside from sound n smell . Ive never owned an FI car.. so I still have the mindset of NA for now i suppose.. i suppose it would actually decrease lag versus increase it as i had thought..or at least get it spinning into boost earlier.
anyhoo, yeah if you end up w vids lmk, PM is cool, I certainly dont mean to thread jack, but at least its free bumpz.
I was looking to get your feedback on "butt dyno" changes, around town on the street when not going all out.. if you didnt notice any real differences, thats a great thing to hear and probably answers my q right there.
I was afraid that running it open in traffic would have negative effects aside from sound n smell . Ive never owned an FI car.. so I still have the mindset of NA for now i suppose.. i suppose it would actually decrease lag versus increase it as i had thought..or at least get it spinning into boost earlier.
anyhoo, yeah if you end up w vids lmk, PM is cool, I certainly dont mean to thread jack, but at least its free bumpz.
If you mean just leaving it open completely and driving around then that's a no go. Mine is about 18" off of the turbo so it's stupid loud. I would be def cruising around town with that thing open all the time!
Depending how free flowing your exhaust is having the valve open should decrease spool time because of the reduction in back pressure on the turbo. Now my question was would I notice a difference in spool from the boost cutout at 7psi to the electric cutout opened before i get into boost. I think it will help a little but I'm not expecting any significant decrease in spool time. Maybe 100rpm earlier at most.
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