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12-20-2009
hey guys. ive got a 02 gt. okay, i want to get a deeper sound for my car, like a deep rumble but not obnoxious or sounding stupid you know? but i dont want to spend 800 bucks on magnaflo, powerflo, ect.
is there an alternative to create this sound? mufflers? ive heard of people deleting resonators and putting a glasspac. help me out people! an suggestions are appreciated!
thankss
12-20-2009
No exhaust setups sound good on these cars. Stock sounds the best if anything.
12-20-2009
Funny, I saw this post since I was about to put one up on my exhaust experience with my 2001 SE 3.1 L with the single exhaust and single muffler. I wanted to convert to a dual exhaust on my 3.1 which almost no one does but I just had a feeling that there was much more performance in this motor. As a reference, I have owned a 1998 GP GT with the 3.8, a 2004 Impala with the 3.8 liter, and my dad currently has a buick LeSabre with a 3.8 liter. I did not want an obnoxious sounding duals just something with a nice rumble at idle and a moderate rumble on the highway but still allows comfortable conversation. Remember, I put this on a 3.1!
After much research and sound clip listening, I went with the GMPP exhaust for the W body cars and was shocked to find when it arrived that this exhaust is actually Magnaflows SS pipes and mufflers for the W bodied cars, specifically designed for the 3.8 motor, although it will fit the 3.1 as well.
GM PART # 12498617
CATEGORY: All
PACK QTY: 1
CORE CHARGE: $0.00
GM LIST: $630.00
OUR PRICE: $458.64
DESCRIPTION: W-body Exhaust Package For use on 1999-2004 Chevrolet Monte Carlo; 2000-2004 Chevrolet Impala; 1997-2003 Pontiac Grand Prix. This replacement exhaust system is constructed with 409 stainless steel tubing and 304 polished stainless steel muffler and tips. Four Inch tips exit under the rear bumper and have adjustable depth to accommodate both stock bumper and ground effects kits. Exhaust adds a throaty rumble while still maintaining a palatable interior noise level. Cars not orginally equipped with dual exhaust will need the dual exhaust conversion kit 12498653 (sold seperately)
I would run, not walk, to buy this system at this price!!! I put this system on my SE 3.1 and eliminated the U bend after the converter when it was installed with a staright piece of 2.5 inch pipe. The wholes system is 2.5 inches which is MUCH bigger that the GT's OEM pipes and obviously my 3.1. The sound is NOT obnoxious and if you choice to leave the U Bend in the system it will be even more muted since that piece is VERY restrictive.
I was shocked at the power increase on my 3.1! As mentioned above, I have owned multiple 3.8 liter W bodied cars with all stock exhaust systems and my 3.1 with the U bend delete and the Magnaflow exhaust (GMPP, everything says Magnaflow on the parts) is more powerful now than the stock GT's and the other 3.8's I have owned with stock exhaust systems. The power increase over the stock 3.8's is not much but this out of a stock 3.1 motor!!! Mileage with this exhaust on the highway is 30-32!!!! I guess you have to wonder with anyone would buy a Honda Fit at 35 MPG.
Please check it out. The best exhaust deal out there!!!
12-20-2009
+1, if you want it to sound good you will spend 800+, if you put a pair of borlas on it will sound decent, but still not totally awesome. Youtube grand prix exhaust and like borla or magnaflow and listen to some clips. If you delete the cat and/or res is sounds like a ricer honda....
12-20-2009
I tried to post an extensive description before but for some reason, it was blocked. GMPP parts exhaust is actually Magnaflow for $450 for gmpartsdirect.com. Run to buy this exhaust at this price.Originally Posted by joshsGT
CATEGORY: All
PACK QTY: 1
CORE CHARGE: $0.00
GM LIST: $630.00
OUR PRICE: $458.64
12-20-2009
Check out GMPP exhaust, part # 12498617, which actually is a magnaflow for the w bodies, for about $450 at gmpartsdirect.com. Send me a message if you want to know my experience with putting this exhaust on a 2001 GP SE 3.1 motor-It is a major improvement!!
12-20-2009
I wrote a very extensive writeup about this exhaust along with a picture of the exhaust system about 1/2 hour ago but the forum blocked my writeup because, I think, the picture from Gmpartsdirect.com-It is a Magnaflow exhaust for $450, all stainless steel, the same one Magnaflow sells under their name for $800, run to get this exhaust at this price. My 3.1 with this exhaust which is fairly muted, with a U bend delete after the cat, makes more power than my stock 3.8 did in my 1998 GT and 2004 Impala LS. Unbelieveable improvement! 30-32 MPG on the highway!
12-20-2009
that exhaust gave your 3.1L an extra 40+ hp huh? i will buy it then sir! Seriously, that exhaust gave you maybe 4-5hp dude, not 40. What is wrong with people these days.
12-20-2009
Well, dude, as you so politely put it, I normally do not participate on the grand prix forums because of this type of reaction. You obviously, are quite misinformed about a few things so let's see if we can correct a few things and then you can do what you want.
1. The U bend delete is good for about 10 hp on its own.
2. A stock 3.1L in 2001 makes 175 HP. My 98 GT made 200 hp with the 3.8. The 2004 Impala as well as the 2001 buick with the 3.8L motor made 200-205 hp, depending on what you read. I have a pretty good reference for my comments.
3. The stock 3.1L with the single exhaust and VERY restrictive single muffler benefits greatly, much more so than the GT or SC exhaust since the SE exhaust is very restrictive to begin with and going to a 2.5 inch single pipe with no U Bend and to a 2.5 inch split with 2.5 inch straight through Magnaflow mufflers could easily be good for 15-20 horsepower, not 4-5 hp. How do I know? 30 years of tingering with real sports cars, not FWD cars making 296 HP? Who is the fool there?
Bought the SE in 2004 for $5,200 with 49,000 miles and its been pretty reliable and intend to drive it for another 50,000 miles now that is at 100,000 miles. Who is the fool now?
12-20-2009
run a catless downpipe with the stock exhaust, all of your sound problems are solved. you put an 800$ exhaust into a 2000$ grand prix youre a fool, and its not even april yet
12-20-2009
thats what i was thinking, i dont want to put 1/5 of what i paid for the car into an exhaust, i just need a way to make it sound a bit more aggressive than stock. thankks everyone
12-20-2009
Very nice-you are a fool! You guys are really brutal! Trying being nice, it really is not hard and you can say what you want!
12-20-2009
i am a fool i am born in april, i was kidding around. catless dp with stock mufflers sounds fine. as for the 3100 sounding better than the 3800 it does because it doesnt have a rahtarted firing order
12-20-2009
the 60 degree v6s sound better than 3800's anyway. I bet my mufflerless 3100 sounded just as good as that $450 exhaust.
joshsGT>> Leave your cat alone, just remove your resonator and go from there. Altering the exhaust is only going to make it sound better at idle. Any other RPM, blah!
12-20-2009
I seriously doubt that your mufflerless 3.1L sounds better than the magnaflow mufflers and resonator. Are you serious with that comment?
12-20-2009
^ do not listen to him leave your res in.
12-20-2009
alright. lets all try to get along now lol. i just want a good sound without breaking the bank. i appreciate all your suggestions, i kinda have an iidea on what i should do now. thanks everyone!
12-22-2009
He doesnt want to spend alot of money. Have the res cut see what it sounds like to him. But you are correct about maybe putting a glass pack on. No reason to swap mufflers. Borlas aren't magic.
Sounds as good. Not better. For the cost, absolutely.
My car old car was also a factory dual exhaust grand prix. Sounded much better than flows or dynomax. How do I know that? We slipped fit them on at the shop. Exhaust tips do make a difference as well.
Spend 450$ on a exhaust for a 3100, are you serious??
bluegtp91>>> I'm gonna let you slide this time. This tard has TOGS going to a 3" magnaflow cat and flowmaster y going to two 2 1/2 Cherry Bomb vortexs. Google them if you care to. No Rasp. Removed my glass pack because it didn't affect the sound at all. A catalytic converter will affect drone and rasp more than a resonator or glasspack. Don't care what anyone has to say on that. I put enough exhausts on cars and trucks every week to know this. No internet BS. Come across the river and I'll kindly let you hear my exhaust.
Last edited by Golgo13; 12-22-2009 at 02:19 AM.
12-22-2009
Spend 450$ on a exhaust for a 3100, are you serious??-I quote!
I have seen this response often on this and other threads. You guys need to get real about the differences between a 3.1 and 3.8 normally aspirated-THERE IS NOT A BIG DIFFERENCE IN THESE MOTORS!!!! Essentially a 3.8 is a slightly bored 3.1 that makes 25 horsepower more than my 3.1. How do i know this FACT other than looking at the specs is that I have had 3.8's in a 97 GT, 2004 Impala LS, and currently in a 2001 Buick-Wake up-The 3.8 versus the 3.1 is not like comparing an old chevy straight 6 to a 427 V8-There is very difference between a 3.8 and 3.1 and even a lesser difference in HP!
12-22-2009
The GM 3400 is the bored out 3100...
I'll leave it at ones a chevy and ones a buick.
If you don't know any of the other differences in the two engines then you'd best check wikipedia.
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