Loud Exhaust Options for L76
I just bought a 2009 G8 GT bone stock and one of the first things I noticed was the stock exhaust was very quiet for a V8 engine. Looking for suggestions for a cat-back exhaust system that is loud at idle and lower RPM but eliminates drone at highway speeds when the DOD is active.
Solo cat back systems have had good feedback. Cant personally say for myself but am wanting to pursue them in the future. Solo mach balanced seems to be the way to go for the most aggressive noise. If you don't plan on building the engine much their solo mach shorty balanced system is the loudest with the solo mach balanced system being next. If you have future plans of headers and supercharging, they offer a good 3" system. Their site offers a lot of good info with sound clips.
All exhausts sound like garbage when AFM is active. Do yourself a favor and tune it out.
Otherwise, yeah the Solo systems are great.
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2008 Panther Black Metallic G8 GT * Sold 6/10/14*
Solos might be your best bet for loud and drone delete. You can add J-Tubes to any axleback however... look up BigReds post here for J-tube information.
2009 PBM G8 GT
Pat G 218/226 & TSP Dual 660s, ARP Bits, DSteck Tuned, Magnacharger Chrome 2300 1:1, RCR Ported/Polished TB, Blower, & L92 Heads w/ LS3 intake valves, Smith Brothers Trunion Bushing Kit, ARH 1 7/8 Magnaflow MidMuff/Solo Axlebacks, RotoFab, VaporWorx PWM 1:1 fuel system, ID1050x injectors
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Yep, SOLO is LOUD AS F! Not a fan, but they're loud!
2009.5 MSM GXP 500ish N/A RWHP. Mods include but aren't limited to: Texas Speed 418 (6.8L) fully forged held together with ARP from top to bottom, PRC 255cc heads, Rick Crawford intake plenum, TB port, polish and tune, Roto-Fab 102mm CAI w/LS7 MAF, Kooks 1-7/8" headers wrapped with DEI, Corsa catless system, Circle D 3200 Stall, 3.45 final drive, BMR's complete street bushing kit and sway bars, Eibach Pro Kit, G-Force Axles, running on staggered VMR 710's with Bridgestone RE11 rubber. HSV triple gauge pack with Calais smokers kit mod, V6 tails, debadge/rebadge, V6 door handles, AU black door trim, Maverick Man under hood strut covers, & washer and bolt kit, fully corrected paint thanks to Adams Polishes and my hard work. Built with reliability in mind with some power for those times when you need to pass or go over a big hill. Just a poser, not a racer!
I was looking at the Solo Catbacks. Sounds like there's a pretty good consensus across the board. Also heard that J pipes could help with droning
I've heard about these AFM deletes and tunes. Aren't they super expensive? I'm kind of balling on a budget atmOriginally Posted by Slizzo
A true DOD delete will run you in the ballpark of $1,000 but you can get a Superchips handheld tuner for $250-$400 new which can turn off the AFM. This will keep all 8 cylinders running all the time, but you still maintain the weak internals that operate the DOD which are prone to failure.
Last edited by birdmang8; 08-03-2017 at 08:26 AM.
IMO, nothing is going to be that loud with the stock exhaust manifolds and stock cats. With the stock stuff, it may be a little louder but it really is relatively quiet.
'09 Pacific Slate G8 GT,1900 Magnacharger cog drive. Engine rebuilt by Texas Speed and Performance with some very nice parts. Airaid intake, Kooks 1 7/8" lt's, cats, midpipe, SLP PowerFlow exhaust. Pedders lowered touring package. Baer Pro front brakes. ForgeStar F14 GunMetal 19x8.5 Michelin Pilot Sport a/s. '78 El Camino. 2008 model Blue Heeler.
Ok so long term the best option is definitely a complete AFM delete. Looks like a solo cat back would be a good place to start, what is the difference between balanced and unbalanced?
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