Hey guys, I bought the car about a year ago from a dealer. The only modification was a MagnaFlow Exhaust system, but they didn't say whether or not it was a catback system or just the muffler. It sounds great regardless of what it is. It also came with "MagnaFlow Performance" exhaust tips. I took a couple pictures from underneath the car, so maybe you guys would be able to recongnize if it is the stock I-pipe or not. If it is just the muffler, are there any places which sell a larger I-pipe, or would I have to get something custom made? Is it correct that the MagnaFlow catback has a 3" pipe and stock is 2.5"? Thanks!

Passenger Side - Rear view
Driver Side - Rear view
Passenger Side - Side view

New Pictures:
Exhaust Tip
Back View
Driver / Back View
Passenger Side View (close to front)
Passenger / Back View

 

It looks like a flowmaster cat-back system to me....

 

Looks like an 80 series muffler with stock pipes to me. I could be wrong though, bet is sounds good!

 

it kinda looks like the stock pipe coming back from the cat. i think the stock is 2.75 inch stainless steel.

 

Exactly, it's a Flowmaster 80 series muffler (definitely not Magnaflow) with what looks like stock piping using aftermarket tips...

I know people hate on this exhaust, but damn I love its tone on the LT1!

Mike

 

Thank you for the responses so far. I took a few more pictures and added them to my original post.

Are the Flowmaster 80 series mufflers not very loud on the LT1? The reason I ask is because this muffler is pretty quiet at idle, but it sounds deep and rumbly when you get on it. At WOT, it sounds like a jet engine taking off

My 91 Firebird (with the 3.1 engine) has the Flowmaster 80 series muffler w/ 2.5" I-pipe, but it sounds much louder, especially at idle.

 

I had an 80 series muffler on my last Z, for like a week, and it wasn't very loud at idle, and personally I don't think it was very loud at WOT either. I swithced over to a Hooker cat-back system and loved it.

 

the stock exhaust does not have mandrel bent tubing...this does has mandrel bent tubing ..., I could be wrong though as the pics don't go all the way to the cat.

Typically the aftermarket vendors making the cat-back systems benifits are gained from mandrel tubing with a higher flowing muffler....nothing else really all too special about them.

 

Stock piping, aftermarket muffler and tailpipes.

 

WRONG! The stock tubing is mandrel bent. The intermediate pipe is 2.75" mandrel-bent 409 SS. From the side view, your intermediate pipe looks stock. The discoloration matches what I'd expect 409 to look like after some use.

The view isn't great, but it almost looks like the tailpipe is not stock. The muffler definitely looks like a Flowmaster.

 

Correct the stock exhaust is mandrel bent. I still have the stock system on my car (Not for long though ) and the pipes look almost identical to the ones in your pic before the muffler.

 

Why would people hate on this muffler? I think it sounds great, I am sure it probaly doesn't add more that 3-4 hp at the rear wheels but if we wanted our mufflers to be the power producer we would be driving Honda Civic's! Get rid of those cats and she will really come alive.

 

Wheres the "hate" in this thread? All sound like opinions from people who have had it and nothing really all that negative, just that it wasnt as loud as a hooker... Theres is another Flomaster bashing thread in LT1 tech though

 

Just so you know where the "hate" is TOBY

 

Yep that's a flowmaster. 3 or 3 1/2" pipe going into the muffler then out 2 1/2" tips. I can see it from my window here. I cut it off right before the muffler Sound exactly the same except much louder. Same sound and tone, low at idle, loud as hell at WOT, but you can hear back fires alot more. You'll also notice more of a top end gain. I didnt notice any low end loss.