Jimmyac28

I just got my 94 firebird formula last week and I was looking at the exhaust today and the catback looks like an aftermarket part because the piping to me looks like its 3".
Attached are some pictures of what it look like

Is my catback exhaust stock or aftermarket? If its aftermarket, what manufacturer is it?
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93Euphoria

Looks stock to me. Im no expert on how many TA’s came with double O tips, but overall its stock. My car has the stock rectangle tips. Different LT1 F-body cars came with different shaped exhaust tips from factory. Im not sure but I bet back in 93-02 they gave you the option to choose what kind of tips you wanted from the factory?! Check to see if you still have a cat under your passengers seat. If you do then its obviously stock exhaust.

devildog214

those look like stock tips and the stock muffler. The piping after the cat is 3" i believe then it goes down to 2.5 when it breaks off into the two tips

Jimmyac28

So the piping after the cat is not stock but the muffler is stock?
So for it to be a full catback exhaust I would just have to replace the miffler for one that is 3" in and dual 3" out?

93Euphoria

Yeah man everything is stock from the pictures you posted. Mufflers look stock, piping looks stock, and I bet the cat is stock. I can see it right there under the passengers side seat. Do you even know what the stock cat looks like? There is no cat in your muffler since its stock.

Jimmyac28

How hard would it be to have someone make me true duals for the car or would it be better to get an aftermarket catback?

93M6Formula

It costs a lot and isn't worth it to me. Just get a Hooker Aerochamber catback and call it good.

fbody_brian

That exhaust looks identical to the one on my 1994 formula, so I'm guessing stock.

pancho toco loco

iTrader: (8)

dead stock 2.75in..............

wysemunky

iTrader: (2)

If you don't mind loud, low hanging exhaust that exits under the car then true duals aren't that hard to do.