opinions on my catback exhaust
Feb 21, 2013, 04:05 AM
#1
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opinions on my catback exhaust
what you think of my catback? its 3" all the way 3 resonators, a muffler across the back and then a varex muffler out the back........restrictive much??? think it could be stealing hp???? im on a fp black setup on 33 psi and wont crack 500hp mustang vdr
Last edited by evoyrrah; Feb 21, 2013 at 04:07 AM.
Feb 21, 2013, 08:37 AM
#3
I do not know how resonators and mufflers affect performance but judging by the way the exhaust is routed I would say it might be causing unwanted back pressure.
I am not familiar with how a typical evo VI exhaust system needs to be routed however the less bends the better.
I am not familiar with how a typical evo VI exhaust system needs to be routed however the less bends the better.
Feb 21, 2013, 08:43 AM
#4
^+1, I'm running a straight 3" with test pipe, I'd like to see the difference between flow and back pressure. You're definitely quite a bit more resticted than me, like the person above said any bend and any res pipe/muffler will make more back pressure which is what you don't want on an FB black turbo setup.
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Feb 21, 2013, 02:03 PM
#9
My post wasn't directed towards you heel2toe.
evoyrran: Looking at your old posts you are doing this with pump gas? If it is on pump gas then I think you are pretty much at your limits until you switch to race gas/e85 or inject alcohol.
evoyrran: Looking at your old posts you are doing this with pump gas? If it is on pump gas then I think you are pretty much at your limits until you switch to race gas/e85 or inject alcohol.
Last edited by evo8426; Feb 21, 2013 at 02:06 PM.
Feb 21, 2013, 02:36 PM
#10
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Na it's on e85..... Didn't really gain much on e85 that's why I'm on here tbh.... It made good power up untill 31psi then didn't wanna make anymore power as we raised the boost..... So as it stands its at like 490hpish on 31-33psi.... It should keep making power as we put the boost up
Feb 21, 2013, 03:02 PM
#11
Is the valve in the varex muffler opening ?
Buschur tested 2 mufflers (straight flow through) vs 1 muffler and there werent any loss of power. Well, he did have 2 or 3 hp peak difference which could just be random error, temperature change, something mechanical etc....
Buschur tested 2 mufflers (straight flow through) vs 1 muffler and there werent any loss of power. Well, he did have 2 or 3 hp peak difference which could just be random error, temperature change, something mechanical etc....
