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SP Boost Activated Exhaust Cut Out in Action!!

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Old 05-01-2009, 05:50 AM
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Default SP Boost Activated Exhaust Cut Out in Action!!
http://www.youtube.com/watch?v=m5gaAuGNk5M


So far we have picked up 36 RWHP and 30 ft lbs of TQ on a low boost pull! The results will be more dramatic as we turn up the boost!!
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Old 05-01-2009, 06:46 AM
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Power gains sound good, but i have to ask, what is the exhaust set up that this is running through w/ out the cut out open?
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Old 05-01-2009, 07:00 AM
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Nice...
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Old 05-01-2009, 07:04 AM
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Originally Posted by fstrnldr
Power gains sound good, but i have to ask, what is the exhaust set up that this is running through w/ out the cut out open?

This is a 3" cutout on a APEXi exhaust with a muffler that you can see straight through.... so it flows very well. This test is on a RB30 motor with a 67mm turbo that is in a 240!!
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Old 05-01-2009, 10:37 AM
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Looks really nice guys! I am interested in this for my Z. I will have to talk with you guys a bit more about it when I come down to pick my motor up.
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Old 05-01-2009, 10:37 AM
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awesome, when is the release date
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Old 05-01-2009, 10:41 AM
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price!
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Old 05-01-2009, 01:19 PM
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Originally Posted by z33boi
awesome, when is the release date



Available now.... been selling like hotcakes!


The 3" valves are $349!!
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Old 05-01-2009, 07:31 PM
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looks just like the ones ATP sells for 285. they are sold out tho. nice looking piece.
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Old 05-01-2009, 08:00 PM
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it's QTP. and the right way to have phrased that is 'QTP also offers electronic cutouts'.

and no they don't. SP's is boost activated... QTP offers manually activated electronic cutouts.
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Old 05-01-2009, 09:14 PM
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And SP's is ENGINEERED to work just like a wastegate, so it won't fail after a week.........

tom

Originally Posted by Motormouth
it's QTP. and the right way to have phrased that is 'QTP also offers electronic cutouts'.

and no they don't. SP's is boost activated... QTP offers manually activated electronic cutouts.
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Old 05-02-2009, 07:07 AM
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Originally Posted by tig488
looks just like the ones ATP sells for 285. they are sold out tho. nice looking piece.
ATP hasn't made any in YEARS... and ATPs are smaller.
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Old 05-02-2009, 07:58 AM
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be interested to see how it does on a Z/G w/ 2.75"-3" dual exhaust.
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Old 05-02-2009, 10:35 AM
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I've been thinking about adding these to my car for a while, I can only imagine how loud it would be though

Nice job guys, I really like the fact that they aren't electronic.

-George
GT Motorsports
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Old 05-02-2009, 12:08 PM
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Originally Posted by Motormouth
it's QTP. and the right way to have phrased that is 'QTP also offers electronic cutouts'.

and no they don't. SP's is boost activated... QTP offers manually activated electronic cutouts.
QTP does infact make electronic cutouts, BUT....as I stated previously and correctly, ATP makes boost activated cutouts. so the right way for you to have phrased that....

heres a link to ATPs boost activated cutout. it does say they are out of stock tho, but when they do make them, they make 3" also.

http://www.atpturbo.com/Merchant2/me...egory_Code=BCS
Last edited by tig488; 05-02-2009 at 12:18 PM.
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Old 05-02-2009, 12:38 PM
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Originally Posted by tig488
QTP does infact make electronic cutouts, BUT....as I stated previously and correctly, ATP makes boost activated cutouts. so the right way for you to have phrased that....

heres a link to ATPs boost activated cutout. it does say they are out of stock tho, but when they do make them, they make 3" also.

http://www.atpturbo.com/Merchant2/me...egory_Code=BCS

ATP has not made any in over 2 years!!
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Old 05-02-2009, 07:48 PM
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Originally Posted by tig488
QTP does infact make electronic cutouts, BUT....as I stated previously and correctly, ATP used to make boost activated cutouts. so the right way for you to have phrased that....

heres a link to ATPs boost activated cutout. it does say they are out of stock tho, but when they do make them, they make 3" also.

http://www.atpturbo.com/Merchant2/me...egory_Code=BCS

sorry, edited.
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Old 05-03-2009, 09:17 PM
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yeah Tig, I realized that thought you mispelled QTP since I didn't realize ATP made them. my bad.
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Old 05-04-2009, 09:58 AM
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Originally Posted by Motormouth
yeah Tig, I realized that thought you mispelled QTP since I didn't realize ATP made them. my bad.
all good man.
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Old 05-23-2009, 12:03 PM
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How does the use of a cut out skew the AFR in your tune? Id imagine that with the cut out open the AFR would drop a few tenths or so compared to when the cut out is closed because the motor is able to pump the exhaust more efficiently? Would this would also allow for a few more degrees of timing?
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