American Thunder Cat-Back got some ???'s

PSCBrenden · Aug 29, 2004

I am about to order the flowmaster American Thunder Cat-back.
For those of you that have it, did you notice any performance after it was installed. Would it be easy enough to install in my drive way?

squares98 · Aug 29, 2004

welding in the driveway...Now thats country. Exhaust will only give you live 7hp on an otherwise stock car which aint poop. a little cleaner sound than just flowmaster mufflers alone which is what i had, and looks like you still have. you will only pick up like 3-4hp going from mufflers to cat back(at most).

who me · Aug 29, 2004

??? You don't have to weld up that catback. It shouldn't be hard at all to it in the driveway. Just need 3 things: tools, a friend, and a little beer. that's what me and my friend did when we put on his x-pipe.

black04stang · Aug 29, 2004

I installed mine in my driveway easy enough...no welding

ironmedic · Aug 29, 2004

hey do these kits come with delta flows or 2 chamber mufflers? on ebay, one kit i saw has 40 series delta flow and on another website, they have a 2 chamber! which is it or are there 2 different kits?

1low03gt · Aug 29, 2004

40's are 2 chambers,2 chambers are 40's.
The only thing different is that they are either delta flows or originals.

Pitch Black · Aug 29, 2004

just buy the 2-chamber mufflers nd weld them into your factory catback, you'll probably save $$ and get the same performance/sound as the Flowmaster catback

steve80 · Aug 29, 2004

cat-back

I have one used I am trying to get $200 out of. It is complete, no dents or anything just used for about 7,000 miles, never seen snow. It's in excellent shape. Just getting rid of it because I am getting rid of the car. If your interested email me at force84@hotmail.com The mufflers alone new will cost you around $120 shipped so this is a pretty good deal.

XStanger · Aug 29, 2004

In your sig it shows that you have Flowmasters now, so why would you want to buy an entire catback?

Mr GT 02 · Aug 30, 2004

Get the Entire Cat back system pipes and all. The Tips are chrome and look a hell of alot better than the stock tips. I have the whole american thunder cat back, the tips say Flowmaster on them. Its awsome. get the 2-1/2" piping. It will flow better due to the larger pipe size than stock. I dont understand why these people are sayin to just have the mufflers welded in the stock pipes. Yea its Cheaper. But it does not look as good! heh

sacstoy02gt · Aug 30, 2004

A tip from my install of my Force II catback:

Ditch the clamps for the tailpipes that come with it. They're really weak and break before the tailpipes are even clamped tight enough.
Go get some heavy duty 3/8" x 2 1/2" clamps from Autozone or wherever. Then you won't have to get under your car twice to switch out the POS clamps Flowmaster gives you.

NiteRydaGT · Aug 30, 2004

sacstoy02gt said:
A tip from my install of my Force II catback:

Ditch the clamps for the tailpipes that come with it. They're really weak and break before the tailpipes are even clamped tight enough.
Go get some heavy duty 3/8" x 2 1/2" clamps from Autozone or wherever. Then you won't have to get under your car twice to switch out the POS clamps Flowmaster gives you.

Good advice.
Mine started leaking about a year after installation.

Pitch Black · Aug 30, 2004

Mr GT 02 said:
Get the Entire Cat back system pipes and all. The Tips are chrome and look a hell of alot better than the stock tips. I have the whole american thunder cat back, the tips say Flowmaster on them. Its awsome. get the 2-1/2" piping. It will flow better due to the larger pipe size than stock. I dont understand why these people are sayin to just have the mufflers welded in the stock pipes. Yea its Cheaper. But it does not look as good! heh

The piping diameter isnt going to do a thing performance/sound-wise. All he needs is the mufflers. If he wants tips to "look cool" then he can buy just tips and still save $$$. Theres absolutely no need for the entire catback from Flowmaster

Mr GT 02 · Aug 30, 2004

Pitch Black said:
The piping diameter isnt going to do a thing performance/sound-wise. All he needs is the mufflers. If he wants tips to "look cool" then he can buy just tips and still save $$$. Theres absolutely no need for the entire catback from Flowmaster

Still...I would get the entire System heh

squares98 · Aug 31, 2004

Pitch black hit the nail on the head.
cost/hp gain ratio is not worth it. Only thing that is, is the exhaust tip appearance factor (to you). nobody else will notice, or care for that matter.

codyGT · Aug 31, 2004

I must be the only one who likes the factory tips?

My friend Brian's Flowmaster cat-back isn'y even as old as my car and his tips look like dung. They are all discolored and the edges look brown and crusty.

My weld-in Borlas did more than his entire cat-back.

ironmedic · Aug 31, 2004

so there is no real performance gain from going 2 1/4 to 2 1/2 piping? i know the bends in the stock piping kinda sucks

Tunez4523 · Aug 31, 2004

On top of all of the other stuff, the newest American Thunder does not come with Delta's or the basic 40 series. It now comes with their "Super" 40 series mufflers set up. Make sure it is this part number to get the newest set up though. There was a big mix up that I read about a while back where some were coming with the old or the new 40's.

http://www.flowmastermufflers.com/cgi-bin/flowmaster/17312.html

That's the correct set with the Super 40's. Me personally, I saw the newest black HTS coated MAC cat back and heard them and decided to go that way instead of the Flows.

twogts4us · Aug 31, 2004

And I don't think the regular Flowmaster cat-back comes with the heavy chrome "Flowmaster" logoed tips - I think this is an option, not standard. (I didn't get them with my catback)
The 2.5" will always be better than the 2.25 inch, but you'd get more out of a mid pipe...and then you'd probably want the catback to match.

Mr GT 02 · Sep 1, 2004

I say GET the WHOLE cat back SYSTEM!
Get the 2-1/2" piping ITS MANDREL BENT! The stock piping sux...

The catback system WILL accomodatethe Aftermarket Midpipe (as the aftermarket mid pipes are larger in diameter also! This will increase exhaust flow and somewhat give u some HP! FAUk da weld in mufflers!

American Thunder Cat-Back got some ???'s

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