The muffler you chose wont be loud at all, comparison to your factory exhaust. You will notice a slight difference. I like split rear 40 series, or Borla exhaust which i chose for my tahoe.

 

I have a flowmaster 50 series and it is just slightly louder than stock, but way less restrictive, well, guess that has to do with the 3.5" pipe size...

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Yeah a flowmaster 40 series is kinda loud inside the cab. even the delta flow series. Thats what I have. Now what do you mean by "out the side"? expect it to be even louder if you have sidepipes. I went from running an open muffler (loud) to sidepipes (way louder). Having the 3" pipe after the muffler made my exhaust tone very very deep and loud. Kind of annoying but it had to be done for inspection purposes.

 

Thanks guys!

Yeah I bought the flowmaster kit that includes all of the pre mandrel bent tubing. It comes with dual tailpipes, they exit on the sides behind the wheels. Not dual out the rear like the Gibsons.

In any case Flowmaster says that bu nature the 70 series muffler is not very aggressive sounding, but with the addition of the dual tubes and the way they are bent it makes it sound better.

I guess I will find out next week, it finally shipped the other day from Summit Racing, it has been back ordered since the 29th of August. Unfortunately no one locally could even come close to their price.

Thanks again.

 

John,

What type of truck do you have? I also have a 97 with 5.7L, ext cab, short bed; and haven't been able to find the dual side-exit kit from Flowmaster. I'd appreciate it if you could let me know the part number(s) for the kit. Also, let us know how it sounds when installed.

Thanks!

Matt

 

Matt,

I have a 97 GMC Extended Cab Z71, the flowmaster part number on that kit is FLO-17261.

Summit Racing has the best price on it at $312. I am supposed to get it on Friday via UPS. I hope to have it installed by Monday. I will post to let you know how it sounds.

John

 

Ok so I had the Kit installed, and I have to dis agree with anyone who said it would not be loud at all. It is significantly louder than stock. My wife said she can now hear me coming from a block away.

It has a very nice sound, and a good feel when driving. The kit is very complete, comes with plenty of hangers and even comes with polished tips. For the price of $312 from Summit Racing this exhaust can't be beat. The kit is the Flowmaster dual out the Side Cat back American Thunder System. Part number FLO-17261. I recommend it highly to anyone who wants a nice aggressive tone and better acceleration, but has a small wallet.

Anyone who has a clue about working on cars can install it in about an hour. Very easy install.

John

 

John,

Thanks for the post. I'm thinking of going with the same setup on my '97. Do the tips go straight out the
sides or at an angle? Any chance for a picture?

Matt