Stock Mufflers Too Restrictive ?
08-11-2007, 07:51 AM
#11
2nd Gear Member
Join Date: Aug 2006
Location: CT
Posts: 159
RE: Stock Mufflers Too Restrictive ?
The Whipple Install manual has some info on this.
It says that by decreasing backpressure it can lower boost levels.
They recommend a pulley change to bring the boost levels back..
Do you have a boost gauge?
My exhaust is all stock except for FlowMaster Axlebacks. They sound nice...
I don't have a boost gauge yet so I have no idea whether it changed anything. Doubt it though.
[IMG]local://upfiles/47008/5B95866DE3374A42B38ACE1EB717721A.jpg[/IMG]
It says that by decreasing backpressure it can lower boost levels.
They recommend a pulley change to bring the boost levels back..
Do you have a boost gauge?
My exhaust is all stock except for FlowMaster Axlebacks. They sound nice...
I don't have a boost gauge yet so I have no idea whether it changed anything. Doubt it though.
[IMG]local://upfiles/47008/5B95866DE3374A42B38ACE1EB717721A.jpg[/IMG]
08-11-2007, 11:42 AM
#12
6th Gear Member
Join Date: Dec 2006
Location: Citrus County, FL
Posts: 8,007
RE: Stock Mufflers Too Restrictive ?
05 mustang gt, shorties, C&L, UDP, CMCV. Swapped to a x-pipe and corsa exhaust. A whopping 7 HP gain and 9lb of torque...
Not worth it, just a sound mod IMHO
Not worth it, just a sound mod IMHO
08-11-2007, 02:56 PM
#13
I ♥ Acer
Join Date: Aug 2006
Location:
Posts: 2,090
RE: Stock Mufflers Too Restrictive ?
ORIGINAL: my77stang
thats the bump from just mufflers once you had all those other mods installed right? god i hope all that stuff you did it worth more tha a total or 7 rwhp
05 mustang gt, shorties, C&L, UDP, CMCV. Swapped to a x-pipe and corsa exhaust. A whopping 7 HP gain and 9lb of torque...
Not worth it, just a sound mod IMHO
Not worth it, just a sound mod IMHO
08-11-2007, 06:17 PM
#14
6th Gear Member
Join Date: Dec 2006
Location: Citrus County, FL
Posts: 8,007
RE: Stock Mufflers Too Restrictive ?
when i did mine it was axle backs and a typhoon CAI (cheap one) between the two i figured i grabbed 10 or 15 @ the flywheel, it certainly sounds better than it did.
08-13-2007, 03:44 PM
#15
I ♥ Acer
Join Date: Aug 2006
Location:
Posts: 2,090
RE: Stock Mufflers Too Restrictive ?
ORIGINAL: my77stang
when i did mine it was axle backs and a typhoon CAI (cheap one) between the two i figured i grabbed 10 or 15 @ the flywheel, it certainly sounds better than it did.
when i did mine it was axle backs and a typhoon CAI (cheap one) between the two i figured i grabbed 10 or 15 @ the flywheel, it certainly sounds better than it did.
. Unless you take your engine out to have it dyno'd separately haha.Andrew
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