Paging Rebel79 --> muffler Question

TJR · 02-13-2002, 12:28 AM

I'm going to replace my H-pipe in the next couple of months and I'll probably get new mufflers (with turndowns) at the same time. So my questions are as follows:

Which Flowmaster mufflers (40 series, delta flow, etc..) do you have on your car?
What are the part #'s ?
How much did they cost?
If you were to replace them, would you buy a chambered muffler or go with a straight through design?

Rebel79 · 02-13-2002, 02:14 AM

TJR

I have the Flowmaster 40 series delta flow mufflers on my car. I have to say they are much deaper at idle than the standard 40 series (2-chambers), but they are a bit quieter.

You are in luck.. I have my car up on jackstands now, so I will write down the part number for you in a bit.

To tell you the truth I got the mufflers for free from Flowmaster. Long story....

To me the straight through mufflers (glass packs) sound ok, but they are usually raspy and very loud. Mu buddy's 00 GT has them with a Hi-flow X-pipe and its pretty ******* loud, not to mention very bassy. I believe he has the Magna Packs on there. Plus the drone on his car is the worst I have heard. Installing a chambered design muffler will help reduce the drone, but yet so does an X-pipe. Also I think its believed that straight through mufflers give more hp, however minimal, but is it really worth it having it be way too loud? If you are going to dump straight through mufflers with an aftermarket H-pipe, be prepared to have every cop in a 2 mile radius hunting for you.

IMHO stick with the chambered design. My car drones, but I love it. The Delta flows didn't reduce much drone over the normal 2-chambers, it just changed the rpm range from when it occurs.

TJR · 02-13-2002, 02:43 AM

Cool! That's the info I was looking for, Thanks!

Quote:

If you are going to dump straight through mufflers with an aftermarket H-pipe, be prepared to have every cop in a 2 mile radius hunting for you.

Good Point! Right now my exhaust system consists of dumped flowmasters (old 2 chambers) and a broken O/R H-pipe (rusted through at the cross over). So not only is it costing me hp (assumption), it's a little on the loud side.

Rebel79 · 02-13-2002, 03:12 AM

Ok I couldn't find the part numbers, on either one but here is the patent number: 4574914. Hope this helps.

TJR · 02-13-2002, 09:01 AM

Just one more quick question. What is the configuration of the muffler as far as the location of the the inlet and outlet?
For example:
inlet-offset/outlet-offset
inlet-center/outlet-offset
inlet-offset/outlet-center

Rebel79 · 02-13-2002, 06:48 PM

Both the inlet and the outlet are offset.

02-13-2002, 12:28 AM	#1
TJR Registered Member Join Date: Apr 2001 Location: Bowling Green, OH Posts: 270	Paging Rebel79 --> muffler Question I'm going to replace my H-pipe in the next couple of months and I'll probably get new mufflers (with turndowns) at the same time. So my questions are as follows: Which Flowmaster mufflers (40 series, delta flow, etc..) do you have on your car? What are the part #'s ? How much did they cost? If you were to replace them, would you buy a chambered muffler or go with a straight through design? __________________ 1989 lx notch 89,000 miles 5-speed, bolt-ons, 3.73, TFS TWs, TFS Track Heat, TFS Stage 1 cam

02-13-2002, 02:14 AM	#2
Rebel79 News Editor Join Date: Apr 1999 Location: Concord, CA Posts: 2,101	TJR I have the Flowmaster 40 series delta flow mufflers on my car. I have to say they are much deaper at idle than the standard 40 series (2-chambers), but they are a bit quieter. You are in luck.. I have my car up on jackstands now, so I will write down the part number for you in a bit. To tell you the truth I got the mufflers for free from Flowmaster. Long story.... To me the straight through mufflers (glass packs) sound ok, but they are usually raspy and very loud. Mu buddy's 00 GT has them with a Hi-flow X-pipe and its pretty ***** loud, not to mention very bassy. I believe he has the Magna Packs on there. Plus the drone on his car is the worst I have heard. Installing a chambered design muffler will help reduce the drone, but yet so does an X-pipe. Also I think its believed that straight through mufflers give more hp, however minimal, but is it really worth it having it be way too loud? If you are going to dump straight through mufflers with an aftermarket H-pipe, be prepared to have every cop in a 2 mile radius hunting for you. IMHO stick with the chambered design. My car drones, but I love it. The Delta flows didn't reduce much drone over the normal 2-chambers, it just changed the rpm range from when it occurs. __________________ Scott Halihan, News Editor** The MustangWorks Magazine 1994 Supercharged Mustang Cobra Rebel Racing. Home of Bay Area Mustangs

02-13-2002, 03:12 AM	#4
Rebel79 News Editor Join Date: Apr 1999 Location: Concord, CA Posts: 2,101	Ok I couldn't find the part numbers, on either one but here is the patent number: 4574914. Hope this helps. __________________ Scott Halihan, News Editor The MustangWorks Magazine 1994 Supercharged Mustang Cobra Rebel Racing. Home of Bay Area Mustangs

02-13-2002, 09:01 AM	#5
TJR Registered Member Join Date: Apr 2001 Location: Bowling Green, OH Posts: 270	Just one more quick question. What is the configuration of the muffler as far as the location of the the inlet and outlet? For example: inlet-offset/outlet-offset inlet-center/outlet-offset inlet-offset/outlet-center __________________ 1989 lx notch 89,000 miles 5-speed, bolt-ons, 3.73, TFS TWs, TFS Track Heat, TFS Stage 1 cam

02-13-2002, 06:48 PM	#6
Rebel79 News Editor Join Date: Apr 1999 Location: Concord, CA Posts: 2,101	Both the inlet and the outlet are offset. __________________ Scott Halihan, News Editor The MustangWorks Magazine 1994 Supercharged Mustang Cobra Rebel Racing. Home of Bay Area Mustangs

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