No Mufflers?

blkONblk02GT · March 16th, 2008, 06:32 PM

Just wondering if not running any mufflers will hurt do to lack of backpressure. I like the sound and it sounds better than the flows i had on... just wondering.... all the rest of my exhaust is stock.

stanglifemike · March 16th, 2008, 11:04 PM

I dont think it will hurt anything, you do need a little backpressure. But this is about the same as running Loudmouths

mastershake · March 17th, 2008, 10:28 AM

I unbolted my mufflers a couple times. It sounds like crap below 4000rpm. My car felt a little slower on the low end. Probably gained a couple HP on the top end though

blkONblk02GT · March 17th, 2008, 04:38 PM

Ya i might just put em back on.. i just like it loud but it does sound shitty below 4 grand like u said and pops a lil bit now n then when u rev it. Im looking into getting some long tubes eventually anyways which will be loud and sound nice i hope!

SquirrelCV · March 17th, 2008, 10:42 PM

Running no mufflers will not hurt your engine in any way, shape, or form.

If you keep the stock 4-cat h-pipe, it will sound raspy and that's up to your personal preference.

The catalytic converters actually add more restriction than the stock mufflers do.

You will notice a big difference in throttle response, but you will actually lose some torque due to a loss in backpressure.

The sound might annoy people around you, and the police might let you know.

I run SLP LM1s with an O/R Bassani X pipe. When I got the LM1s, I noticed little gain in power but the response was improved some. When I got the O/R pipes prior to a tune, the torque was downright killed. After the tune, my car felt the torque return due to the tune and corrected A/F ratio (mine was actually off)

When I run open headers, I lose a lot of low-end torque, but the engine gets up to rpm faster. It's rather strange how that works, but since there is a lack of restriction, physics is physics.

blkONblk02GT · March 18th, 2008, 05:20 PM

Thanks for the info SquirrelCV!

SquirrelCV · March 18th, 2008, 07:39 PM

Originally Posted by blkONblk02GT

Thanks for the info SquirrelCV!

No problem!

March 16th, 2008, 06:32 PM	#1
blkONblk02GT Regular 2002 GT Join Date: Oct 2007 Location: Milwaukee, WI Posts: 69	No Mufflers? Just wondering if not running any mufflers will hurt do to lack of backpressure. I like the sound and it sounds better than the flows i had on... just wondering.... all the rest of my exhaust is stock. __________________ "I drink for today, i drink for tomorrow, i need another drink... do ya have any money i can borrow?"

March 16th, 2008, 11:04 PM	#2
stanglifemike MM Fanatic 06 GT & 98 GT Join Date: Dec 2006 Location: Douglasville, GA Posts: 3,243	I dont think it will hurt anything, you do need a little backpressure. But this is about the same as running Loudmouths __________________ 98 GT: Accufab, Steeda, BBk, Mac, FlowMaster, Moser, Ford Racing, American Racing, Nitto, Eibach, SCT, FPS 06 GT: JLT, SCT, FRPP/Borla, Pypes, Steeda, BamaChips RadMustangs Store McCain/Palin 08

March 17th, 2008, 10:28 AM	#3
mastershake Regular 2003 Mustang GT Join Date: Apr 2007 Location: Youngstown,Ohio Posts: 77	I unbolted my mufflers a couple times. It sounds like crap below 4000rpm. My car felt a little slower on the low end. Probably gained a couple HP on the top end though __________________

March 17th, 2008, 04:38 PM	#4
blkONblk02GT Regular 2002 GT Join Date: Oct 2007 Location: Milwaukee, WI Posts: 69	Ya i might just put em back on.. i just like it loud but it does sound shitty below 4 grand like u said and pops a lil bit now n then when u rev it. Im looking into getting some long tubes eventually anyways which will be loud and sound nice i hope! __________________ "I drink for today, i drink for tomorrow, i need another drink... do ya have any money i can borrow?"

March 18th, 2008, 05:20 PM	#6
blkONblk02GT Regular 2002 GT Join Date: Oct 2007 Location: Milwaukee, WI Posts: 69	Thanks for the info SquirrelCV! __________________ "I drink for today, i drink for tomorrow, i need another drink... do ya have any money i can borrow?"

March 17th, 2008, 10:42 PM	#5
SquirrelCV Newbie 2000 Mustang GT 10's in April Join Date: Mar 2008 Location: CT Posts: 27	Running no mufflers will not hurt your engine in any way, shape, or form. If you keep the stock 4-cat h-pipe, it will sound raspy and that's up to your personal preference. The catalytic converters actually add more restriction than the stock mufflers do. You will notice a big difference in throttle response, but you will actually lose some torque due to a loss in backpressure. The sound might annoy people around you, and the police might let you know. I run SLP LM1s with an O/R Bassani X pipe. When I got the LM1s, I noticed little gain in power but the response was improved some. When I got the O/R pipes prior to a tune, the torque was downright killed. After the tune, my car felt the torque return due to the tune and corrected A/F ratio (mine was actually off) When I run open headers, I lose a lot of low-end torque, but the engine gets up to rpm faster. It's rather strange how that works, but since there is a lack of restriction, physics is physics.

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