Flowmaster Axel Backs

SS07GT · June 4th, 2007, 02:56 AM

Anyone have flowmaster axel backs on theyre stang? I know the 40s on my 98 sound really good, but what about for the s197's? i have some at home waiting to be installed. Just curious as to how theyll sound b4 i get home and install them.

MaverickMLFD371 · June 4th, 2007, 08:58 AM

they sounded great! barely any drone, nice rumble @ idle but screamed when you got on it, not too quiet and not too loud, sounded just right!

kmjsmith · June 4th, 2007, 10:49 AM

I have Flowmaster american thunder's on my 07 GT and you can't get a better sound in my opinion...not too aggresive but noticable when you walk on it! I love them.

Regency 2007 · June 4th, 2007, 11:42 AM

dont buy the "choke masters" get a flow through exhaust system instead of chambered muffler... no real hp gains with flows

MaverickMLFD371 · June 4th, 2007, 01:04 PM

Originally Posted by Regency 2007

dont buy the "choke masters" get a flow through exhaust system instead of chambered muffler... no real hp gains with flows

uhh.....there's no real HP gains with ANY axleback exhaust kit bro......

the new exhaust, you change the axleback, all your doing is changing the sound.

Regency 2007 · June 4th, 2007, 01:15 PM

mustangs have gained as much as 10-12 rwhp with Borla axle back system on the dyno here in town at the mustang shop...

MaverickMLFD371 · June 4th, 2007, 01:51 PM

Originally Posted by Regency 2007

mustangs have gained as much as 10-12 rwhp with Borla axle back system on the dyno here in town at the mustang shop...

too busy reading the fine print on the borla website. there is NO GAIN on a catback or axleback exhaust. all your doing is changing the sound! in order to gain power from an exhaust, you would have to convert to longtube headers or change the midpipe. plain and simple.

10-12HP my ass......

kmjsmith · June 4th, 2007, 02:48 PM

I wish I gained 10-12 by bolting on my Flows...but I have to agree with Mav..I havint seen any increased performance with them...just sound!

boostedGTR · June 4th, 2007, 02:49 PM

Have you guys looked in the JBA line of headers and exhausts for the 05+ GT .....they do axle back, cat back, shorties and Long tube headers along with mid pipes to go with the long tubes

leebunnyz · June 4th, 2007, 03:03 PM

i agree with mav also, i wish it was true though

MaverickMLFD371 · June 4th, 2007, 03:58 PM

the older mustangs may have gained 10-12 horses on a catback exhaust, but not the new ones. Ford did their homework on the new mustang!

SEANMD81 · June 5th, 2007, 06:13 AM

I HAVE THE SLP LOUD MOUTH AND I DIDN'T FEEL A DAMN THING, I AGREE WITH MAV. JUST REPLACING THE MUFFLERS IS JUST FOR SOUND AND SHOW

SEANMD81 · June 5th, 2007, 07:26 AM

actually i just ordered flowmasters for my 07 gt because i am having nothing but problems w/SLP.

MaverickMLFD371 · June 5th, 2007, 09:10 AM

Originally Posted by SEANMD81

actually i just ordered flowmasters for my 07 gt because i am having nothing but problems w/SLP.

what problems?

RStrick0352 · June 5th, 2007, 11:56 AM

Dont you guys realize that your exhaust can actually have too little restriction or backpressure, which in the case of our cars which arent race cars can be harmful to the powerband, more so torque than the hp. Also regency the chambers in the flowmaster mufflers are designed to increase the scavenging effect of the exhaust system while still maintaining an appropriate amount of back pressure. Flow throughs have their place with their fans as far as sound goes, but its a pretty consistent opinion around here that NO muffler for these cars really increases performance.

SEANMD81 · June 9th, 2007, 06:14 AM

I just installed the Flowmasters on mine and they sound great

06RedfireGT · June 13th, 2007, 01:24 AM

i still like my bassani. i dont like the flows they arent deep enough. bassani ABs arent too loud and they dont drone alot. give them a look before you buy the flows.

SS07GT · June 13th, 2007, 08:30 AM

After reading multiple sites about the exhaust ive read about ford doing theyre homework and mufflers not gaining anything. I'm not changing them for the horsepower factor, just want something a bit louder. Its hard to hear the stock ones with the radio turned up. I want that old school sound. For the power adder i was thinking about going with a whipple in august. Still want to enjoy her stock for a couple more months

acehogg69 · June 13th, 2007, 09:05 AM

Originally Posted by SEANMD81

actually i just ordered flowmasters for my 07 gt because i am having nothing but problems w/SLP.

What problems are you having?

SEANMD81 · June 14th, 2007, 02:28 AM

I was looking at Bassani but i didn't feel like paying the price tag for them. I'm happy with flowmasters right now. The right tip on my SLP exhaust was rattling really bad so i canned them, i wasn't to happy w/the drone that came with them i drive a lot of highway so that constant humming noise along w/the rattle drove me nuts.

June 4th, 2007, 02:56 AM	#1
SS07GT Newbie Join Date: Jun 2007 Location: Hagerstown, MD; Waynesboro, PA Posts: 32 iTrader: 0 reviews	Flowmaster Axel Backs Anyone have flowmaster axel backs on theyre stang? I know the 40s on my 98 sound really good, but what about for the s197's? i have some at home waiting to be installed. Just curious as to how theyll sound b4 i get home and install them. __________________ '98 Mustang GT - Lazer red, flowmaster 40s, MAC CAI, Granatelli tubular K member and A arms, Summit racing oil filter relocation kit. '07 Mustang GT - Satin Silver, GT Appearance Package, Comfort Package. All Stock, flowmaster 40s at home.

June 4th, 2007, 08:58 AM	#2
MaverickMLFD371 Hardcore Enthusiast 2005 Join Date: Dec 2005 Location: New Jersey Posts: 1,459 iTrader: 0 reviews	they sounded great! barely any drone, nice rumble @ idle but screamed when you got on it, not too quiet and not too loud, sounded just right! __________________ 2005 Ford Mustang GT - Sonic Blue FRPP/Whipple Supercharger Intercooled 495 RWHP / 504 RWTQ SAE Corrected @ 11psi Tuned by Kevin @ Wicked Motorsports

June 4th, 2007, 10:49 AM	#3
kmjsmith Regular Join Date: Apr 2007 Location: Canada Posts: 188 iTrader: 0 reviews	I have Flowmaster american thunder's on my 07 GT and you can't get a better sound in my opinion...not too aggresive but noticable when you walk on it! I love them. __________________ 07 GT Chrome footprint gas pedal Fuzzy dice Comfort grip steering wheel cover Custom 8 track install

June 4th, 2007, 02:48 PM	#8
kmjsmith Regular Join Date: Apr 2007 Location: Canada Posts: 188 iTrader: 0 reviews	I wish I gained 10-12 by bolting on my Flows...but I have to agree with Mav..I havint seen any increased performance with them...just sound! __________________ 07 GT Chrome footprint gas pedal Fuzzy dice Comfort grip steering wheel cover Custom 8 track install

June 4th, 2007, 03:03 PM	#10
leebunnyz MM Fanatic Join Date: Feb 2007 Location: Vineland, NJ Posts: 3,583 iTrader: 0 reviews	i agree with mav also, i wish it was true though __________________ Jesus Christ is #1 "The Founder Of Crews"

June 4th, 2007, 11:42 AM	#4
Regency 2007 Hardcore Enthusiast F-150 FX4 Join Date: May 2007 Location: Memphrica Posts: 1,157 iTrader: 0 reviews	dont buy the "choke masters" get a flow through exhaust system instead of chambered muffler... no real hp gains with flows

June 4th, 2007, 01:15 PM	#6
Regency 2007 Hardcore Enthusiast F-150 FX4 Join Date: May 2007 Location: Memphrica Posts: 1,157 iTrader: 0 reviews	mustangs have gained as much as 10-12 rwhp with Borla axle back system on the dyno here in town at the mustang shop...

June 4th, 2007, 02:49 PM	#9
boostedGTR Newbie Join Date: Jun 2007 Posts: 15 iTrader: 0 reviews	Have you guys looked in the JBA line of headers and exhausts for the 05+ GT .....they do axle back, cat back, shorties and Long tube headers along with mid pipes to go with the long tubes

June 4th, 2007, 03:58 PM	#11
MaverickMLFD371 Hardcore Enthusiast 2005 Join Date: Dec 2005 Location: New Jersey Posts: 1,459 iTrader: 0 reviews	the older mustangs may have gained 10-12 horses on a catback exhaust, but not the new ones. Ford did their homework on the new mustang! __________________ 2005 Ford Mustang GT - Sonic Blue FRPP/Whipple Supercharger Intercooled 495 RWHP / 504 RWTQ SAE Corrected @ 11psi Tuned by Kevin @ Wicked Motorsports

June 5th, 2007, 06:13 AM	#12
SEANMD81 Regular 2007 MUSTANG GT Join Date: May 2007 Location: Baltimore, MD. Posts: 125 iTrader: 0 reviews	I HAVE THE SLP LOUD MOUTH AND I DIDN'T FEEL A DAMN THING, I AGREE WITH MAV. JUST REPLACING THE MUFFLERS IS JUST FOR SOUND AND SHOW

June 5th, 2007, 07:26 AM	#13
SEANMD81 Regular 2007 MUSTANG GT Join Date: May 2007 Location: Baltimore, MD. Posts: 125 iTrader: 0 reviews	actually i just ordered flowmasters for my 07 gt because i am having nothing but problems w/SLP.

June 5th, 2007, 11:56 AM	#15
RStrick0352 Enthusiast 2007 Mustang GT 11.40 @ 121 mph Join Date: Apr 2007 Location: Jacksonville, NC Posts: 660 iTrader: 0 reviews	Dont you guys realize that your exhaust can actually have too little restriction or backpressure, which in the case of our cars which arent race cars can be harmful to the powerband, more so torque than the hp. Also regency the chambers in the flowmaster mufflers are designed to increase the scavenging effect of the exhaust system while still maintaining an appropriate amount of back pressure. Flow throughs have their place with their fans as far as sound goes, but its a pretty consistent opinion around here that NO muffler for these cars really increases performance. __________________ GT 6sp Grabber Orange For mods check my garage. 349 rwhp, 331 rwtrq Naturally Aspirated 445 rwhp, 495 rwtrq 100 Shot 60ft: 1.74 1/4: 12.15 @ 112.43 N/A 60ft: 1.71 11.40 @ 121.18 100 shot Nitrous

June 9th, 2007, 06:14 AM	#16
SEANMD81 Regular 2007 MUSTANG GT Join Date: May 2007 Location: Baltimore, MD. Posts: 125 iTrader: 0 reviews	I just installed the Flowmasters on mine and they sound great

June 13th, 2007, 01:24 AM	#17
06RedfireGT One Man Wolf Pack 2006 Mustang GT 13ish....maybe Join Date: Aug 2006 Location: Regulatin On Some OGs Posts: 22,211 iTrader: 2 reviews	i still like my bassani. i dont like the flows they arent deep enough. bassani ABs arent too loud and they dont drone alot. give them a look before you buy the flows.

June 13th, 2007, 08:30 AM	#18
SS07GT Newbie Join Date: Jun 2007 Location: Hagerstown, MD; Waynesboro, PA Posts: 32 iTrader: 0 reviews	After reading multiple sites about the exhaust ive read about ford doing theyre homework and mufflers not gaining anything. I'm not changing them for the horsepower factor, just want something a bit louder. Its hard to hear the stock ones with the radio turned up. I want that old school sound. For the power adder i was thinking about going with a whipple in august. Still want to enjoy her stock for a couple more months __________________ '98 Mustang GT - Lazer red, flowmaster 40s, MAC CAI, Granatelli tubular K member and A arms, Summit racing oil filter relocation kit. '07 Mustang GT - Satin Silver, GT Appearance Package, Comfort Package. All Stock, flowmaster 40s at home.

June 14th, 2007, 02:28 AM	#20
SEANMD81 Regular 2007 MUSTANG GT Join Date: May 2007 Location: Baltimore, MD. Posts: 125 iTrader: 0 reviews	I was looking at Bassani but i didn't feel like paying the price tag for them. I'm happy with flowmasters right now. The right tip on my SLP exhaust was rattling really bad so i canned them, i wasn't to happy w/the drone that came with them i drive a lot of highway so that constant humming noise along w/the rattle drove me nuts.

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