Magnaflow vs. Flowmaster

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bennyjammin

New Member

Oct 13, 2003

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Feb 5, 2004

#1

• Feb 5, 2004

• #1

I have been reading on this forum that Flowmasters may actually hurt power over stock mufflers. I currently have the 3 chambered Force II cat back. I love the sound- very muscular and throaty, even at idle- slight drone at 2000 rpm. But could they be costing me horsepower? Should I switch to a design like magnaflow, which is supposedly straight through, with no baffles or restrictions? I don't want my car to be too loud and I don't want it to drone. BTW, I've never had my car on a dyno. See the mods in my sig.
thanks

 

jeff1414

New Member

Jun 19, 2003

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Sacramento

Feb 5, 2004

#2

• Feb 5, 2004

• #2

maybe if you switched to the regular magnaflow since you don't want it that loud you would probably get a few horsepower but not much. But magnapacks sound alot better Imo.

 

decoy562

New Member

Oct 9, 2003

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Acworth, GA

Feb 5, 2004

#3

• Feb 5, 2004

• #3

I would change, but then again, I'm biased

 

wms004

Founding Member

Jan 15, 2002

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49

Los Angeles

Feb 5, 2004

#4

• Feb 5, 2004

• #4

If you've got the 2.5" catback you aren't losing power from the flows. Actually White99GT is making something like 550 rwhp with your catback.. and he made more power with it than a magnaflow catback.. given he is supercharged, but N/A there wouldn't be much to gain from switching to a straight thru muffler.

 

yellow2kgt

Founding Member

Mar 18, 2002

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Fishersville,va

Feb 5, 2004

#5

• Feb 5, 2004

• #5

I would not change IMHO. I have had both systems before. The Force II(3 chambers) and now the magnaflow. I really miss the flowmaster sound, and my regular magnaflows have more drone then the 3 chambers did. Besides, I really do not think you will gain much if any more power from the swap.

 

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bennyjammin

New Member

Oct 13, 2003

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Feb 5, 2004

#6

• Feb 5, 2004

• #6

yellow2kgt said:

I would not change IMHO. I have had both systems before. The Force II(3 chambers) and now the magnaflow. I really miss the flowmaster sound, and my regular magnaflows have more drone then the 3 chambers did. Besides, I really do not think you will gain much if any more power from the swap.

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Well that is reassuring because I prefer the sound I have with the Flowmasters. I'm surprised to hear that the Magnaflows drone more- I've heard my friends GT with Magnaflows and his seemed quiter both at idle and when he revved. The flowmasters seem to have a deeper rumble when idleing and more of a growl when revved.