Shaun or anyone else running Magnaflows

silverbulletstang · November 19th, 2011, 05:05 PM

I have an American Thunder Catback and want to change out the muffler to a Maggie.

Does anyone know if the part number of the muffler on the Magnaflow Catback is 11236 or what??

roosgt! · November 19th, 2011, 07:04 PM

I have magnaflow cat back system but I cannot remeber the part # for the life of me.

Eagle2000GT · November 19th, 2011, 08:10 PM

I don't know the part number I bought my Magnaflow mufflers at a muffler shop. I was running the original Flowmaster 40s and hated them. Instead of buying a completely new cat-back I went to a muffler shop and had them cut out and the Magnaflow mufflers welded in.

silverbulletstang · November 20th, 2011, 01:39 AM

Could someone measure them and see the dimensions of them these flowmasters are killing me with the drone..

Eagle2000GT · November 20th, 2011, 08:19 AM

A muffler shop can get you the right part number. Magnaflow makes a direct replacement for the original Flowmaster 40. Same offset and everything. All you have to do is to cut the old mufflers out and weld the new ones in. Since I don't weld I had a local shop do the work. It was a lot less expensive than buying a new catback. If you prefer to do the work yourself then call a muffler shop. They can get you the right part number.

P.S. I agree completely about the Flowmaster drone.

SON1C · November 20th, 2011, 08:30 AM

if you think flow drone is bad try thrush chambered mufflers

Thunderscrash · November 20th, 2011, 08:48 AM

Flows drone for sure. I just installed a magnapak cat back yesterday though and it completely changed the sound of my exhaust. It's not bad just real deep I kind of liked my old flows better. Just my opinion. Go on AM I think they have a diagram for the magnaflow system that had the part numbers.

vinnie115 · November 20th, 2011, 11:09 AM

i just did same, installed magnapaks, took off flows, goin to try mags muffs, i let u no

JustRight · November 20th, 2011, 03:09 PM

Stock pipes with Magnaflow mufflers is my favorite combo. Zero drone and great sound.

vinnie115 · November 20th, 2011, 05:50 PM

do u no the part no. for those mag muffs?

vinnie115 · November 21st, 2011, 11:54 AM

the magnaflow magnapaks catback part # is 15673

silverbulletstang · November 21st, 2011, 08:08 PM

Yes it its. But I'm looking for the regular magnaflow muffler not the magnapak

JustRight · November 25th, 2011, 11:29 PM

I still have the receipt some where. I'll see if I can find it for you.

overnightmillionaire · November 26th, 2011, 12:28 AM

I had magna flow cat back switched to flowmaster thunder... I love it.

Drone is bad but I love the sound of it compared to the magna... sure magna is nice too though.

November 19th, 2011, 05:05 PM	#1
silverbulletstang Regular 2000 Mustang GT never seen the track Join Date: Oct 2010 Location: Houston, Texas Posts: 124 iTrader: 0 reviews	Shaun or anyone else running Magnaflows I have an American Thunder Catback and want to change out the muffler to a Maggie. Does anyone know if the part number of the muffler on the Magnaflow Catback is 11236 or what??

November 19th, 2011, 07:04 PM	#2
roosgt! MM Official Sammich Maker 1999 mustang gt n/a Join Date: Jan 2009 Location: Vancouver, British Columbia Posts: 4,119 iTrader: 3 reviews	I have magnaflow cat back system but I cannot remeber the part # for the life of me. __________________ KASE Racing 72 Chevell 500hp 74 Comet 500+hp and spray 99 Mustang GT bolt on's and 93 tune 85 Notch 520ci BBF

November 19th, 2011, 08:10 PM	#3
Eagle2000GT I Post Entirely Way Too Much 2000 Mustang GT 12.73@111.36 Join Date: Aug 2007 Location: Shelbyville, IN Posts: 5,311 iTrader: 1 reviews	I don't know the part number I bought my Magnaflow mufflers at a muffler shop. I was running the original Flowmaster 40s and hated them. Instead of buying a completely new cat-back I went to a muffler shop and had them cut out and the Magnaflow mufflers welded in. __________________ ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage.

November 20th, 2011, 08:19 AM	#5
Eagle2000GT I Post Entirely Way Too Much 2000 Mustang GT 12.73@111.36 Join Date: Aug 2007 Location: Shelbyville, IN Posts: 5,311 iTrader: 1 reviews	A muffler shop can get you the right part number. Magnaflow makes a direct replacement for the original Flowmaster 40. Same offset and everything. All you have to do is to cut the old mufflers out and weld the new ones in. Since I don't weld I had a local shop do the work. It was a lot less expensive than buying a new catback. If you prefer to do the work yourself then call a muffler shop. They can get you the right part number. P.S. I agree completely about the Flowmaster drone. __________________ ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage.

November 20th, 2011, 08:30 AM	#6
SON1C Run ur car, not ur mouth. 2003 Sonic Blue 4.6L Join Date: Jul 2010 Location: Northern Virginia Posts: 4,047 Blog Entries: 1 iTrader: 3 reviews	if you think flow drone is bad try thrush chambered mufflers __________________ 238rwhp/263rwtq Drew's Build Thread

November 20th, 2011, 01:39 AM	#4
silverbulletstang Regular 2000 Mustang GT never seen the track Join Date: Oct 2010 Location: Houston, Texas Posts: 124 iTrader: 0 reviews	Could someone measure them and see the dimensions of them these flowmasters are killing me with the drone..

November 20th, 2011, 08:48 AM	#7
Thunderscrash Regular 2000 GT N/A Join Date: Oct 2010 Location: Delaware? Posts: 478 iTrader: 0 reviews	Flows drone for sure. I just installed a magnapak cat back yesterday though and it completely changed the sound of my exhaust. It's not bad just real deep I kind of liked my old flows better. Just my opinion. Go on AM I think they have a diagram for the magnaflow system that had the part numbers.

November 20th, 2011, 11:09 AM	#8
vinnie115 Regular Join Date: Jul 2011 Posts: 92 iTrader: 0 reviews	i just did same, installed magnapaks, took off flows, goin to try mags muffs, i let u no

November 20th, 2011, 03:09 PM	#9
JustRight Premium Member 01 GT Conv Join Date: Nov 2009 Location: NW Fl Posts: 169 iTrader: 0 reviews	Stock pipes with Magnaflow mufflers is my favorite combo. Zero drone and great sound. __________________ Official member of the anti ethanol-laced gas crusade.

November 20th, 2011, 05:50 PM	#10
vinnie115 Regular Join Date: Jul 2011 Posts: 92 iTrader: 0 reviews	do u no the part no. for those mag muffs?

November 21st, 2011, 11:54 AM	#11
vinnie115 Regular Join Date: Jul 2011 Posts: 92 iTrader: 0 reviews	the magnaflow magnapaks catback part # is 15673

November 21st, 2011, 08:08 PM	#12
silverbulletstang Regular 2000 Mustang GT never seen the track Join Date: Oct 2010 Location: Houston, Texas Posts: 124 iTrader: 0 reviews	Yes it its. But I'm looking for the regular magnaflow muffler not the magnapak

November 25th, 2011, 11:29 PM	#13
JustRight Premium Member 01 GT Conv Join Date: Nov 2009 Location: NW Fl Posts: 169 iTrader: 0 reviews	I still have the receipt some where. I'll see if I can find it for you. __________________ Official member of the anti ethanol-laced gas crusade.

November 26th, 2011, 12:28 AM	#14
overnightmillionaire Regular Mustang GT 2004 Join Date: Oct 2011 Location: Long Island, NY Posts: 219 iTrader: 0 reviews	I had magna flow cat back switched to flowmaster thunder... I love it. Drone is bad but I love the sound of it compared to the magna... sure magna is nice too though. __________________ 2004 Mustang GT 384 rwhp - Vortech V2 supercharger, methanol injection, Short Throw Shifter, 3.73 Gears, Flowmaster American Thunder Catback, BBK H-Pipe and Long Tube headers

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