Cutout with catted ypipe
04-15-2009, 07:28 AM
#1
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Cutout with catted ypipe OK a little background on what im running exhaust wise. American racing lt, catted y-pipe, and borla with adjustable plate catback. I have no plate in the catback. My catback seems pretty free flowing. Do yous think I would see lower times at track and would it be any louder if i ran a cutout on my (I) pipe? I was also thinking about trying to run dual cutouts before cats. I think that may cause some troubles tho. Being so close to front 02 sensors may cause car to run rich. Also burnt valves and lose of tq. Sorry for long post Im just trying to see if I can squeeze any more power out of my exhaust. thanks in advance
04-15-2009, 09:21 AM
#2
Moved down the I-pipe will be a waste of effort. There will be very marginal, if any gains.
If you're really thinking of changing your setup, do two dumps off the headers, and get the car tuned to run that way. I wouldn't be surprised if you did lose torque though. Not too sure about burning valves though...I think that's a thing of the past (not sure).
Check out the dyno section to see results.
If you're really thinking of changing your setup, do two dumps off the headers, and get the car tuned to run that way. I wouldn't be surprised if you did lose torque though. Not too sure about burning valves though...I think that's a thing of the past (not sure).
Check out the dyno section to see results.
04-15-2009, 06:45 PM
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Mine is after my y pipe and i have a custom full 3" catback with a 3"in/out Bullet muffler and i picked up 13hp and 11lb tq.... huge gain and this was DYNO PULL CAPPED DYNO PULL UNCAPPED within minutes of each other.....
i have the Texas speed Y Pipe with the High flow cats... Its alot louder and really no rasp at all, i always get complimented on the sound of the exhaust...... did i mention 13hp and 11lb tq over a 3" Bullet muffler and full 3" exhaust..... and did not lose anything AT ANY RPM RANGE gained as low as the dyno could read
i have the Texas speed Y Pipe with the High flow cats... Its alot louder and really no rasp at all, i always get complimented on the sound of the exhaust...... did i mention 13hp and 11lb tq over a 3" Bullet muffler and full 3" exhaust..... and did not lose anything AT ANY RPM RANGE gained as low as the dyno could read
04-15-2009, 08:25 PM
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Mine is after my y pipe and i have a custom full 3" catback with a 3"in/out Bullet muffler and i picked up 13hp and 11lb tq.... huge gain and this was DYNO PULL CAPPED DYNO PULL UNCAPPED within minutes of each other.....
i have the Texas speed Y Pipe with the High flow cats... Its alot louder and really no rasp at all, i always get complimented on the sound of the exhaust...... did i mention 13hp and 11lb tq over a 3" Bullet muffler and full 3" exhaust..... and did not lose anything AT ANY RPM RANGE gained as low as the dyno could read
i have the Texas speed Y Pipe with the High flow cats... Its alot louder and really no rasp at all, i always get complimented on the sound of the exhaust...... did i mention 13hp and 11lb tq over a 3" Bullet muffler and full 3" exhaust..... and did not lose anything AT ANY RPM RANGE gained as low as the dyno could read
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04-15-2009, 11:43 PM
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Mine is after my y pipe and i have a custom full 3" catback with a 3"in/out Bullet muffler and i picked up 13hp and 11lb tq.... huge gain and this was DYNO PULL CAPPED DYNO PULL UNCAPPED within minutes of each other.....
i have the Texas speed Y Pipe with the High flow cats... Its alot louder and really no rasp at all, i always get complimented on the sound of the exhaust...... did i mention 13hp and 11lb tq over a 3" Bullet muffler and full 3" exhaust..... and did not lose anything AT ANY RPM RANGE gained as low as the dyno could read
i have the Texas speed Y Pipe with the High flow cats... Its alot louder and really no rasp at all, i always get complimented on the sound of the exhaust...... did i mention 13hp and 11lb tq over a 3" Bullet muffler and full 3" exhaust..... and did not lose anything AT ANY RPM RANGE gained as low as the dyno could read
04-15-2009, 11:49 PM
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it is a Dynomax Bullet muffler... Straight through nothing inside, You could put a baseball bat through it.... Real dynomax Bullet... I cant picture any exhaust being free'r flowing....
TTP did the tune, he showed me the dynoresults....
o and im sorry mixed it up 11hp 13lb tq
http://dynomax.com/products/raceseries.html
Compact, round design for tight ground clearance.
-----------------------------------------------------------
Lightweight construction.
-----------------------------------------------------------
Maximum flow, minimum sound control.
-----------------------------------------------------------
2-4 dbA reduction compared to straight pipe.
-----------------------------------------------------------
The ultimate race muffler
TTP did the tune, he showed me the dynoresults....
o and im sorry mixed it up 11hp 13lb tq
http://dynomax.com/products/raceseries.html
Compact, round design for tight ground clearance.
-----------------------------------------------------------
Lightweight construction.
-----------------------------------------------------------
Maximum flow, minimum sound control.
-----------------------------------------------------------
2-4 dbA reduction compared to straight pipe.
-----------------------------------------------------------
The ultimate race muffler
