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larryndog
08-25-2006, 08:41 AM
does flowmaster 80 series do anything performance wise....hp gain?
onyx_rock
08-25-2006, 10:44 AM
short answer = no
Hotrod
08-25-2006, 11:54 AM
Just the muffler...no. Add headers and a high-flow cat and it will.
larryndog
08-25-2006, 03:10 PM
thanks
sunsetorangess
08-25-2006, 08:07 PM
Flowmaster sounds great but as far as performance i wouldnt wast the cash.
J
MegaMan
08-25-2006, 11:53 PM
Flowmaster isn't really known for their performance enhancement...in the v6 world at least. I don't know of any dyno tests however.
98Z-28Camaro
08-29-2006, 02:54 PM
In my application it actually hurt my performance. I switched to a more open exhaust and it dramatically helped me.
NHRAMAN
08-29-2006, 02:57 PM
sorry guys--that 80 series is better flowing and much better sounding than the stocker...you will probably pick up 5-8 hp and the sound of it alone is worth changing JUST the muffler if $ is tight.
Wesman
08-29-2006, 06:09 PM
I have an 80 Series flowmaster on my 98 LS1. It sounds good, but it could definitely be louder.

Not sure how it is power wise, since it was on the car when I bought it. Between the flowmaster muffler and the 3" catback though, it probably makes around ~10HP over the stock exhaust.
MadSeason
08-30-2006, 12:22 PM
on a v6 the flowmaster's flow problems aren't an issue
2000pontiac6
09-01-2006, 10:39 AM
I have an 80 Series flowmaster on my 98 LS1. It sounds good, but it could definitely be louder.

Not sure how it is power wise, since it was on the car when I bought it. Between the flowmaster muffler and the 3" catback though, it probably makes around ~10HP over the stock exhaust.

V8 exhausts seem to be very different with flowmaster, plus 10hp gain on an ls1 is equal to much less on a v6
StangKiller615
09-06-2006, 12:03 PM
V8 exhausts seem to be very different with flowmaster, plus 10hp gain on an ls1 is equal to much less on a v6

Yeah Flowmaster sucks for LS1's.
i not tarted
09-06-2006, 06:22 PM
go w/the flowmaster 40, thats what i have and it sounds real good for a 6banger..........the 40 series sounds much more aggressive than the 80 series
Wesman
09-06-2006, 06:39 PM
Yeah Flowmaster sucks for LS1's.

I don't think mine is too bad...sounds pretty good if you ask me. Maybe not super loud, but it sounds good :confused:
MadSeason
09-07-2006, 08:20 AM
I don't think mine is too bad...sounds pretty good if you ask me. Maybe not super loud, but it sounds good :confused:

sound is great performance is horrible
Wesman
09-07-2006, 11:08 AM
sound is great performance is horrible

Any data to back that up?? Just curious, if its that bad I may consider replacing the muffler.
MadSeason
09-07-2006, 11:12 AM
Any data to back that up?? Just curious, if its that bad I may consider replacing the muffler. There's plenty of data floating around here and on tech showing about a 10-15 rwhp restriction when switching to a more free flowing muffler and the nickname chokemaster
Wesman
09-07-2006, 12:07 PM
There's plenty of data floating around here and on tech showing about a 10-15 rwhp restriction when switching to a more free flowing muffler and the nickname chokemaster

Okay thanks I'll lcheck it out then.