Best thing to start with for a 2000 3.8 Firebird

[99' Z-28]

2 1/2 inch cat-back will work.
So, what name cat-back are you going with?

[Dildozer]

dunno yet, i was thinking flowmaster but i've been told it would probably slow me down, tho i was thinking of changing the muffler for a ravin and keep the tubing from the flowmaster (probably the cheapest way to do it)

[99' Z-28]

dunno yet, i was thinking flowmaster but i've been told it would probably slow me down, tho i was thinking of changing the muffler for a ravin and keep the tubing from the flowmaster (probably the cheapest way to do it)

Flowmaster makes a good kit. I don't know who told you that it would slow you down, but there is nothing wrong with flowmaster. The Cat-Back that fits your car comes 2.5inch and has a 80series muffler that exits duel out the rear. Part # 17358
Changing the muffler for a ravin and keep the tubing from flowmaster, is going to be more wouldn't it? You are going to get a muffler with the flowmaster kit. If you get the flowmaster kit, you might as well use the 80 series muffler, unless you want the buy a ravin also. Both mufflers are great. The 80 series will be louder...its about the only difference i have see between the two. So its your choice what you want to do.

[First Lady]

I haven't heard anything good about Flowmaster, just that it's cheap.
Try Spintech or Borla. Hooker's good. Remember you get what you pay for.

[99' Z-28]

Try Spintech or Borla. Hooker's good. Remember you get what you pay for.

Spintech makes a good muffler, its $109. It will be pretty loud tho like most of Spintechs mufflers. I don't care much for Borla. After all the tests ran, paying $700+ for their kit is not worth it. It sounds no more agressive than a flowmaster.
You can't trust what these muffler manufactures say about there products unless you have actually heard and felt the power difference.
Dildozer, if you get the flowmaster cat-back, just go with the 80 series. There is nothing wrong with that muffer and its perfered my most. I said ravin at the start because it's a great buy and worth every dime. I also thougth you were just going to replace the stock OEM muffler. But since you are going cat-back then the flowmaster 80. I think it's kind of wierd not using the muffler that comes with the kit and buy another one for $70-$100. Just my

[Dildozer]

thanks for the info, tho i'm not big on the sound since it'S a v6, i just want to increase performance. It's probably quieter than the american thunder tho (or is it the same thing)

[99' Z-28]

It's probably quieter than the american thunder tho (or is it the same thing)

Yeah, the flowmaster kit for your car is an american thunder.

[Dildozer]

Any place where i can get this cheap? so far Jegs.com has it for $272, too bad they don't seem to take paypal...

[njp98]

Get the Magnaflow 3" V8 system it fits the V6 fine and performs, looks, and sounds sweet, I love mine. I get alota compliments on the sound. I have CIA headers too so that helps as well though.