Thread: Range active fuel management disable device

Originally Posted by 91parkave

U bend was not gone on ls4 vehicles. We all had the stupid u bend.

And the factory exhaust is garbage, toss that **** to. Unlike our 3800 bastard relatives , we have gains to be had and sound from exhaust modifications. Also if your gonna blow 200 just buy a Diablo tuner and and use that instead to turn off dod as well as have the ability to upload tunes to your vehicle.

Garbage in the sense that its mild steel, rusts and falls apart after a couple of years, and is a 2.5" system that turns into a 1 7/8" system at the mufflers. Are there gains to be had replacing the catback alone? Sure, alot of gains? Not as much as everyone seems to think. The real problems with the LS4 exhaust are up front. I am looking into the walker/dynomax super turbo direct fit mufflers for our cars, and ill probably replace that entire catback soon enough as my mufflers are beginning to rust out, found a dime size hole in the drivers side last week and its not long before the intermediate pipe begins to rot through, its completely rusted solid.

Originally Posted by 91parkave

Why don't you just do it right and get the premade 3inch system from Mandrelexhaustsystems.com and fit mufflers and call it done

thats exactly what im talking about, its a trubendz exhaust kit, but it doesnt come with mufflers or resonators, just pipes clamps and hangars.

TRUBENDZ 04-08 Pontiac Grand Prix Dual Exhaust Tubing System	$170.00
WALKER 17666 Dynomax Super Turbo Direct Fit Muffler RIGHT	$69.99
WALKER 17667 Dynomax Super Turbo Direct Fit Muffler LEFT	$69.99
WALKER 21569 Exhaust Resonator and Pipe Assembly	$42.79

all of those are the 2.5" pieces, including the OEM replacement resonator assembly.

Originally Posted by Spawne32

TRUBENDZ 04-08 Pontiac Grand Prix Dual Exhaust Tubing System	$170.00
WALKER 17666 Dynomax Super Turbo Direct Fit Muffler RIGHT	$69.99
WALKER 17667 Dynomax Super Turbo Direct Fit Muffler LEFT	$69.99
WALKER 21569 Exhaust Resonator and Pipe Assembly	$42.79

all of those are the 2.5" pieces, including the OEM replacement resonator assembly.

That is too expensive in my opinion for mufflers that are not fully welded. I have used Dynomax in the past, the sound is decent with a bit of a nice growl, but they dont last as they end up leaking at the seems. As we discussed before also in my opinion 2 1/2 is too small for our cars, but get what suits you.

Originally Posted by rottonj

That is too expensive in my opinion for mufflers that are not fully welded. I have used Dynomax in the past, the sound is decent with a bit of a nice growl, but they dont last as they end up leaking at the seems. As we discussed before also in my opinion 2 1/2 is too small for our cars, but get what suits you.

I'd happily buy a 3" exhaust, if you could prove to me that there is a gain by going to a 3" over a 2.5" dual. lol

Originally Posted by Spawne32

I'd happily buy a 3" exhaust, if you could prove to me that there is a gain by going to a 3" over a 2.5" dual. lol

Be stubborn , I cant provide it other than stating I have used 3 inch exhaust systems in the past on cars with one main section pipe with seat of pants gains. I can tell you going 2 1/2 will net you nothing as its what is there already except for the smaller tail section. Whatever you choose I would include some brand of welded mufflers if you want it to last awhile.