Boost Actuated Exhaust Cutout or O2 Dump
Thread Starter
Joined: Nov 2008
Posts: 1,058
Likes: 16
From: East of the Rockies
Thread Starter
Joined: Nov 2008
Posts: 1,058
Likes: 16
From: East of the Rockies
I have it t off right at the turbo outlet. It still rumbles, but not too bad. I'll be designing a new version this winter.
I would need to do logs back to back with it on and off. It wouldn't be too hard to do that, but I don't have time at the moment. However, it feels like it! 
I have it t off right at the turbo outlet. It still rumbles, but not too bad. I'll be designing a new version this winter.
I would need to do logs back to back with it on and off. It wouldn't be too hard to do that, but I don't have time at the moment. However, it feels like it!
I would need to do logs back to back with it on and off. It wouldn't be too hard to do that, but I don't have time at the moment. However, it feels like it!
Thread Starter
Joined: Nov 2008
Posts: 1,058
Likes: 16
From: East of the Rockies
I did back to back test of BAEC on and off. It's obvious that the spool up and PSI (2500-3800 RPM) and tapering and PSI at 5800-7000 RPM are identical. It was interesting to see without the BAEC my PSI tapered off at 3800 RPM and never reach 27 PSI.
The gain in HP/TQ is what I remember from when I first put it on. It's important to note that I didn't tune it without the BAEC in this VD.
The gain in HP/TQ is what I remember from when I first put it on. It's important to note that I didn't tune it without the BAEC in this VD.
I welded in an electronic cutout in a friends sti powered wrx. It sounds cool on the suby, but like someone else said it does leak by, so idle sounds kinda funny. And it hangs low, so he has to be super careful not to scrape on stuff. If did make a noticeable improvement in power because he had one resonator in his exhaust. We did some runs, rolling starts in 1st gear and the difference was obvious. he was about 3 car lengths faster with it open.
I did back to back test of BAEC on and off. It's obvious that the spool up and PSI (2500-3800 RPM) and tapering and PSI at 5800-7000 RPM are identical. It was interesting to see without the BAEC my PSI tapered off at 3800 RPM and never reach 27 PSI.
The gain in HP/TQ is what I remember from when I first put it on. It's important to note that I didn't tune it without the BAEC in this VD.
The gain in HP/TQ is what I remember from when I first put it on. It's important to note that I didn't tune it without the BAEC in this VD.
Thread Starter
Joined: Nov 2008
Posts: 1,058
Likes: 16
From: East of the Rockies
It's on a stock cat back. At the moment I'm running a 3" QTP DP with a Y Pipe built in. I plan on using a Perrin 3" DP and making a SS test Y pipe with my own version of this BAEC. I don't like the exhaust leak this one makes.
Evolving Member
Joined: Nov 2006
Posts: 180
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From: Mechanicsville, MD
Which leaks?
Former Sponsor
Joined: Mar 2013
Posts: 452
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From: Colorado
I have the QTP Evo DP that I took the electric cutout off and replaced with a SP boost actuated exhaust cutout by SP. The SP unit leaks. Does that make sense? I have it off the car now I could take a pic.
