Question about exhaust

Sonics2042 · 09-10-2001, 03:08 PM

I am going to get a new cat-back exhaust system one way or another. I have heard the American Thunder and it is too loud for me. I am looking for something throaty, but a little bit more low profile. I want it to be relatively quiet on idle, but to be louder when I punch it.

Someone told me that the MAC system would be better for what I was looking for.
Any Ideas?

Thanks,
Sonics2042

Mustang_289 · 09-10-2001, 07:39 PM

My son and I are building up an 88GT with a MAC system including: long-tube headers, short H-pipe with cats, and MAC cat-bak. I heard this setup on a 289 who ran the same setup. The idle sound was certainly beefier than stock setup - and when he kicked it sound was really deep. Owner said it was due to the long-tube headers vs shorties.

We'll have our new system installed in a week or two and the engine running again.

Fox Body · 09-10-2001, 08:34 PM

IF you don't want too loud, DO NOT get 2 chamber Flowmasters + off road h-pipe (but if you do want mean, throaty and loud, get them-- awesome). Get the 3 chamber Flowmasters with Delta Flow Technology. If installed with stock Mustang h-pipe (with the 4 cats), I think they'd be EXACTLY what you'd want. Seriously consider those.

-----------------------------------------
351W-powered 1979 Ford Mustang notchback
Stock 5.8L under custom made 4" cowl, C4 w/ shift kit
Holley 750 cfm, Edelbrock Performer RPM intake
1 5/8" MAC shorty headers, Al driveshaft
2.5" Off road H-pipe, 2-chamber Flowmasters
Front: 225/60/15, Rear: 255/60/15 Eagle GT II
Weld wheels (15x6;15x8), 8.8" Rear w/ 3.55s
14 x 4” K&N air filter. Only a couple of weeks b4 Project FOX begins!!!

"Red, thou art my companion. Hasten now your quickened metamorphosis to Green that I may conquer all who dare abide there beside me. May they be left thither behind burnt black." ---Fox Body

[This message has been edited by Fox Body (edited 09-10-2001).]

1BAD89 · 09-10-2001, 08:53 PM

I have 3 chambers, with an offroad H-pipe, and it is THE perfect combo.! Not to loud when cruising, but sounds 3 times better than 2 chambers!

------------------
1989 GT, 3:55's, full exhaust, 4 in. hood, Pro 5.0, Have many other parts 4 sale. All parts for sale now.

2000 Camaro SS-A4, 13.7's bone stock.

1989 Chevy S-10, EX. Cab-383(500+hp on motor), trick flow heads, trick flow pistons, etc... autometer phantom gauges, "built" 700R4, roll cage, lexan back window, corbeau seats, R.H.S. 5 harnesses, Fuel cell, convo pro wheels, 15x14's with 29x18.5 M/T'S on back, 15x4's on front, nitrous, and so much more!

todd95GT · 09-10-2001, 10:08 PM

Definately 3 chambers if you want it quieter.

------------------
Todd
1995 GT/T-5
Pulleys; 65 mm TB; Flowmaster cat-back; Mac off road H-pipe; FMS aluminum driveshaft; short-throw shifter; HD clutch; Cobra R's; Cobra front and wing

09-10-2001, 03:08 PM	#1
Sonics2042 Registered Member Join Date: Jul 2001 Location: Seattle, WA Posts: 381	Question about exhaust I am going to get a new cat-back exhaust system one way or another. I have heard the American Thunder and it is too loud for me. I am looking for something throaty, but a little bit more low profile. I want it to be relatively quiet on idle, but to be louder when I punch it. Someone told me that the MAC system would be better for what I was looking for. Any Ideas? Thanks, Sonics2042

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09-10-2001, 07:39 PM	#2
Mustang_289 Registered Member Join Date: Sep 2001 Posts: 512	My son and I are building up an 88GT with a MAC system including: long-tube headers, short H-pipe with cats, and MAC cat-bak. I heard this setup on a 289 who ran the same setup. The idle sound was certainly beefier than stock setup - and when he kicked it sound was really deep. Owner said it was due to the long-tube headers vs shorties. We'll have our new system installed in a week or two and the engine running again.

09-10-2001, 08:34 PM	#3
Fox Body Mustang Maniac Join Date: Sep 2000 Location: GA, U.S.A Posts: 2,266	IF you don't want too loud, DO NOT get 2 chamber Flowmasters + off road h-pipe (but if you do want mean, throaty and loud, get them-- awesome). Get the 3 chamber Flowmasters with Delta Flow Technology. If installed with stock Mustang h-pipe (with the 4 cats), I think they'd be EXACTLY what you'd want. Seriously consider those. ----------------------------------------- 351W-powered 1979 Ford Mustang notchback Stock 5.8L under custom made 4" cowl, C4 w/ shift kit Holley 750 cfm, Edelbrock Performer RPM intake 1 5/8" MAC shorty headers, Al driveshaft 2.5" Off road H-pipe, 2-chamber Flowmasters Front: 225/60/15, Rear: 255/60/15 Eagle GT II Weld wheels (15x6;15x8), 8.8" Rear w/ 3.55s 14 x 4” K&N air filter. Only a couple of weeks b4 Project FOX* begins!!!* "Red, thou art my companion. Hasten now your quickened metamorphosis to Green that I may conquer all who dare abide there beside me. May they be left thither behind burnt black." ---Fox Body [This message has been edited by Fox Body (edited 09-10-2001).]

09-10-2001, 08:53 PM	#4
1BAD89 Tubbed and Juiced Join Date: Mar 2001 Location: Tulsa, Oklahoma Posts: 1,861	I have 3 chambers, with an offroad H-pipe, and it is THE perfect combo.! Not to loud when cruising, but sounds 3 times better than 2 chambers! ------------------ 1989 GT, 3:55's, full exhaust, 4 in. hood, Pro 5.0, Have many other parts 4 sale. All parts for sale now. 2000 Camaro SS-A4, 13.7's bone stock. 1989 Chevy S-10, EX. Cab-383(500+hp on motor), trick flow heads, trick flow pistons, etc... autometer phantom gauges, "built" 700R4, roll cage, lexan back window, corbeau seats, R.H.S. 5 harnesses, Fuel cell, convo pro wheels, 15x14's with 29x18.5 M/T'S on back, 15x4's on front, nitrous, and so much more!

09-10-2001, 10:08 PM	#5
todd95GT Registered Member Join Date: Aug 2001 Location: Palm Beach Gardens, Florida, USA Posts: 191	Definately 3 chambers if you want it quieter. ------------------ Todd 1995 GT/T-5 Pulleys; 65 mm TB; Flowmaster cat-back; Mac off road H-pipe; FMS aluminum driveshaft; short-throw shifter; HD clutch; Cobra R's; Cobra front and wing