I'm setting up a custom exhaust for my '91 RS V8.

What's the best muffler for the money (street legal in CA)? I know there's Borla, but what model do you recommend? Flowmaster?

I don't want too much noise, basically want it loud when i get on it, and nice and low when i'm cruising or idle. It's still my daily driver so i don't want it to be annoying.

Also is there much of a difference between the 2.25" stock pipe as compared to 3" in terms of HP/torque?

 

If u want sound and performance but not as much sound, u could go with a Flowmaster 50 Series or a Delta Flow Flowmaster, which gives more flow and not as much sound.

I wouldn't run a 3in. exhaust on a stock 305 unless it is going to be heavily modded.

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Looking For:

87 IROC-Z 350 TPI
84 TRANS AM 305 H.O.

[This message has been edited by IROCZTWENTYGR8 (edited March 10, 2001).]

 

Dynomax ultra flo offer great air flow and performance. It sound low at cruising rpm but it rumble very well on high rev.

 

My formula came stock with a 3" exhaust (305 engine). I then put in the american thunder system. Its quite loud (its rumbles the house when i warm it up in the garage) I have heard that if you want it to sound like you have described, get the Dynomax system. 3" is just fine for a 305.. plus you will get better performance.

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• 89 Formula 305 WS6
  SFC's,
  LCA's,
  Air foil
  Flowmaster cat back
  Tranny Cooler
  A/F Ratio Meter (not a mod but it sure spurs interest)
  Trans Temp Gauge
  Most "Free" Mods
• 90 Eagle Talon 2.0
  (winter beater)
  Mods? HA! its a rice burner!

[This message has been edited by Omega (edited March 09, 2001).]

 

Flows

[This message has been edited by dallasiroc (edited March 09, 2001).]

 

How did your car come with a 3in. exhaust stock??


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Looking For:

87 IROC-Z 350 TPI
84 TRANS AM 305 H.O.

 

I think he meant to say 2 3/4" pipe witch looks like a 3" compared to the 2 1/4" pipe on a RS. The stock tpi exhaust is a good step up from the stock RS exhaust. With headers it would run real good and sound better.IMO

Steve