Exhaust for 03 silverado

2string · #1 08-21-2007, 07:40 PM

I just purchased a 03 silverado 1500 4.8L ext. and I want to put a cat back system on it. I had a grand cherokee with a flowmaster on it and I loved it but they tell me the flowmasters on a silverado is bad. They say it resonates in the cabin. Is this true also what do you all like as far as looks, duals out the back,1 on each side or 2 out 1 side? Suggestions on a system please.

'97ventureowner · #2 08-21-2007, 08:54 PM

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01silverado03z400 · #3 08-21-2007, 08:56 PM

I have an 01 Silverado 4.8 and I have a magnaflow system. It's a single-in dual-out and it exits on both sides. I like it. It sounds good in and out of the cab. With flowmaster you wont gain as much power as with a magnaflow, corsa or borla because flowmaster is chambered while the others are straight through. Personaly i like the tips out on each side or straight out the back but Corsa makes a nice catback that has the two tips out on one side. Its nice but pricey.

2string · #4 08-22-2007, 04:46 AM

Sorry about that, after I posted I read about there being a section on silverados only.

Sonny01 · #5 08-22-2007, 08:48 PM

OK then...now that you have been spanked...welcome to the forum! Lots of guys and even some gals with tons of experience with these trucks. I have saved thousands of dollars by posting questions and fixing my truck myself rather then going to the dealer.
Good luck with your Silverado!
Sonny01

sc_customs · #6 08-23-2007, 03:29 AM

I've got a flowmaster 40 series df 3" in 3" out on my 4.8L and I'll probably never change it. I haven't heard anything that would sound better on it. I have always thought about going with a different muffler or brand, but fear of disappointment always makes me stick with this one.

I have audio files of it if you wanna hear it first.

2string · #7 08-23-2007, 06:11 AM

I think they make a 50 series which is quieter is this correct? Listening to yours will do me know good my truck is not modified with headers and such like yours. I was told by a custom exhaust shop that no longers sells flowmaster that at a certain rpm the flowmaster resonates in the cab. I don't know if I should believe him or not. I loved the flowmaster on my jeep but I'm not sure about the truck???

silverado122775 · #8 08-23-2007, 08:32 AM

I did away with the muffler all together. I like hearing the true sound of a V8.
Right now I have a straight pipe from the cat out to the passenger side. It sounds awesome. It has the growling sound at low and gets louder when you rev it.

chuck16 · #9 08-23-2007, 09:29 AM

I would go with the Flow'ies and NOT MAGNAFLOW!!! Magnaflow Single in dual out resonates BAD in the Cabin.
Had to put a High Flow resonator on it to help.

2string · #10 08-23-2007, 02:27 PM

Do tail pipes soften the noise or will it sound no louder if I dump it just over the axel? Is it legal to do this?

silverado122775 · #11 08-23-2007, 02:58 PM

Quote:

Originally Posted by 2string

Do tail pipes soften the noise or will it sound no louder if I dump it just over the axel? Is it legal to do this?

Yes.. I have my pipe before the rear wheel and it is louder than when I had it out the back.

2string · #12 08-23-2007, 06:05 PM

I"m thinking about getting this system does anybody know how it will sound. I'm not looking for loud,just sorta throaty sounding. http://www.corsaperf.com/trucks_suvs.htm.

TexasF355F1 · #13 08-23-2007, 07:22 PM

I had Borla on my 5.3 and loved it. It's what I'll always recommend for any Chevy truck. I received so many compliments with it.

Sonny01 · #14 08-23-2007, 09:06 PM

Corsa is one of the better systems for these trucks...but they cost like $1000...I replaced the stock muffler on my truck with a Borla Turbo muffler and it sounds great and I get better gas mileage too!

2string · #15 08-23-2007, 09:16 PM

Are the corsa mufflers loud and do they resonate in the cab?

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