Flowmaster 40 Series
Thread Starter
Member
Joined: Feb 2001
Posts: 451
Likes: 0
From: Keller, TX
Car: 06 Toyota Tundra SR5
Flowmaster 40 Series
I recently bought a Flowmaster 40 Series muffler for my dual exhaust system on my 87 Pontiact Firebird formula 305 4bbl LG4 carburated engine, and I was wondering how much horsepower did I jsut add to my car?
BTW - How do you guys get your signature to work after your post with your cars info, I cant get mine to work
BTW - How do you guys get your signature to work after your post with your cars info, I cant get mine to work
Thread Starter
Member
Joined: Feb 2001
Posts: 451
Likes: 0
From: Keller, TX
Car: 06 Toyota Tundra SR5
Opps, never read they bottom of the posting block 
Oh and btw, I have like a single in and dual out muffler, I dont have "true" dual exhaust.
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87 FireBird Formula
305 carburated Engine
K&N Filter
Flowmaster 40 Series
2 1/2 inch tips
Stock Dual Exhaust
-----Need Upgrades-----
--Give suggestions plz--
Oh and btw, I have like a single in and dual out muffler, I dont have "true" dual exhaust.------------------
87 FireBird Formula
305 carburated Engine
K&N Filter
Flowmaster 40 Series
2 1/2 inch tips
Stock Dual Exhaust
-----Need Upgrades-----
--Give suggestions plz--
Junior Member
Joined: Feb 2001
Posts: 8
Likes: 0
From: where cops are mean
so thats how the sig works...
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1990 RS, Code23 medium maui blue metallic, craptacular 305, but soon that white 5.0 lx at school will get a good beating from a 355 RS...hehehe...
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1990 RS, Code23 medium maui blue metallic, craptacular 305, but soon that white 5.0 lx at school will get a good beating from a 355 RS...hehehe...
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