Vadimus Posted September 18, 2015 Report Share Posted September 18, 2015 I thought our dual exhaust is a decoration. Looks like it is not! Quote Link to comment Share on other sites More sharing options...
GT500R Posted September 18, 2015 Report Share Posted September 18, 2015 Nope, wouldn't make sense to have to turbos flowing into a small pipe then split in the end! Although I am wondering how much more flowing the exhaust could be if the suitcase muffler was taken out! 1 Quote Link to comment Share on other sites More sharing options...
WWWPerfA_ZN0W Posted September 18, 2015 Report Share Posted September 18, 2015 If true to prev design, the downpipes (exhaust port to catback) will be the restriction, with awkward bends. Quote Link to comment Share on other sites More sharing options...
Erik Hilliard Posted September 18, 2015 Report Share Posted September 18, 2015 Any custom exhausts out there yet? Quote Link to comment Share on other sites More sharing options...
15sportTT Posted September 18, 2015 Report Share Posted September 18, 2015 Any custom exhausts out there yet? I was wondering about this also. We have the 2.7L twin turbo. Never had a turbo driven auto before. Would true dual exhaust help or hinder performance? Quote Link to comment Share on other sites More sharing options...
WWWPerfA_ZN0W Posted September 18, 2015 Report Share Posted September 18, 2015 All depends on design on the exhaust and packaging. It could be replaced with a larger, single pipe, 2into1 setup if you wanted to go that route. But from a marketing standpoint, on a higher end vehicle, people expect dual exhaust tips at a minimum LOL. This is provided of course on the Gen I Edge with a split at the back end of the catback instead of a true dual layout. Quote Link to comment Share on other sites More sharing options...
Erik Hilliard Posted September 19, 2015 Report Share Posted September 19, 2015 As someone mentioned, for performance, catless downpipes will help. Potentially a better header as well depending on the current design. As for a full exhaust, I found you change it for the sound it makes, not the performance it provides (once you have done the downpipes). Quote Link to comment Share on other sites More sharing options...
cds71 Posted September 19, 2015 Report Share Posted September 19, 2015 As someone mentioned, for performance, catless downpipes will help. Potentially a better header as well depending on the current design. As for a full exhaust, I found you change it for the sound it makes, not the performance it provides (once you have done the downpipes). There is no header on the 2.7 the turbos are mounted directly to the block. I've looked at my exhaust and nothere are some restrictions around the cat....my buddy at light speed figured you could get a 15 to 20 hp gain with better exhaust. ....but again that could void your warranty. Quote Link to comment Share on other sites More sharing options...
Erik Hilliard Posted September 21, 2015 Report Share Posted September 21, 2015 Why would an exhaust void your warranty? It does not work like that. The dealer would have to prove evidence that the modification directly caused the issue you're looking to have repaired with your warranty. Tuning (increasing boost) would be a bigger concern from a warranty perspective than an exhaust, obviously. Quote Link to comment Share on other sites More sharing options...
Nathan Pfleger Posted December 30, 2015 Report Share Posted December 30, 2015 Magnaflow makes a cat back system for 2.7 EB FWD only. They didn't know AWD set up was different. Which sucks cuz I have AWD. Quote Link to comment Share on other sites More sharing options...
redlancer Posted December 30, 2015 Report Share Posted December 30, 2015 Magnaflow makes a cat back system for 2.7 EB FWD only. They didn't know AWD set up was different. Which sucks cuz I have AWD. I think just about everybody with the sport has AWD. I can't imagine it's more than 5-10% FWD, I would guess less. Quote Link to comment Share on other sites More sharing options...
Nick Halstead Posted December 30, 2015 Report Share Posted December 30, 2015 I think just about everybody with the sport has AWD. I can't imagine it's more than 5-10% FWD, I would guess less. FWD here, simply cause well...awd isn't that big in Hawaii. neither are vista roofs. Quote Link to comment Share on other sites More sharing options...
Vadimus Posted December 30, 2015 Author Report Share Posted December 30, 2015 (edited) FWD here, simply cause well...awd isn't that big in Hawaii. neither are vista roofs. All my tires spin a bit when I actively start from the light in a rain, sometime 1->2 shift is squeaky too (on Blizzak DM-V1 winter tires though). Mine's AWD, cannot imagine what would it be with just FWD. Edited December 30, 2015 by Vadimus 1 Quote Link to comment Share on other sites More sharing options...
cds71 Posted December 31, 2015 Report Share Posted December 31, 2015 (edited) All my tires spin a bit when I actively start from the light in a rain, sometime 1->2 shift is squeaky too (on Blizzak DM-V1 winter tires though). Mine's AWD, cannot imagine what would it be with just FWD. same here... if I take the tract control off, I can light all 4 tires up when it rains.....I cant imagine what the fwd would do with tract control off.....it would be a beast! My dad was very surprised that the edge had a true dual exhaust. It looks almost fake til you look under the edge. Guess he was just use to all the fake crap dual exhaust systems that GM puts on their vehicles....he had a fake dual system on their grand am, grand prix and their G6....funny thing is he and my mom are now going to buy an edge sport....I let him drive mine and he loved it. Edited December 31, 2015 by cds71 1 Quote Link to comment Share on other sites More sharing options...
Brad Luczak Posted January 1, 2016 Report Share Posted January 1, 2016 funny thing is he and my mom are now going to buy an edge sport....I let him drive mine and he loved it. My uncle refused to drive my Sport for that very reason.. Quote Link to comment Share on other sites More sharing options...
jalm111 Posted January 4, 2016 Report Share Posted January 4, 2016 same here... if I take the tract control off, I can light all 4 tires up when it rains.....I cant imagine what the fwd would do with tract control off.....it would be a beast! My dad was very surprised that the edge had a true dual exhaust. It looks almost fake til you look under the edge. Guess he was just use to all the fake crap dual exhaust systems that GM puts on their vehicles....he had a fake dual system on their grand am, grand prix and their G6....funny thing is he and my mom are now going to buy an edge sport....I let him drive mine and he loved it. No way you're 'lighting up' all 4 tires with open diffs 2 at most :D Quote Link to comment Share on other sites More sharing options...
Vadimus Posted January 4, 2016 Author Report Share Posted January 4, 2016 No way you're 'lighting up' all 4 tires with open diffs 2 at most :D You just need road condition to be relatively uniform under all 4 wheels, that's it. Quote Link to comment Share on other sites More sharing options...
akirby Posted January 4, 2016 Report Share Posted January 4, 2016 You just need road condition to be relatively uniform under all 4 wheels, that's it. If one tire is spinning with an open diff the other one isn't getting any torque, so no it's not possible. Quote Link to comment Share on other sites More sharing options...
Vadimus Posted January 4, 2016 Author Report Share Posted January 4, 2016 And why would one tire spin? Quote Link to comment Share on other sites More sharing options...
cds71 Posted January 4, 2016 Report Share Posted January 4, 2016 No way you're 'lighting up' all 4 tires with open diffs 2 at most :D If that was the case, they would light up all the time(even on dry).....which never happens on dry road conditions, so as Vadimus said all 4 must be receiving torque or else they would be spinning all the time. Quote Link to comment Share on other sites More sharing options...
Nick Halstead Posted January 4, 2016 Report Share Posted January 4, 2016 loss of traction on wet roads can cause you to spin more than just the power wheel though. Quote Link to comment Share on other sites More sharing options...
jalm111 Posted January 4, 2016 Report Share Posted January 4, 2016 Youtube open diff burn out Most likely spinning just one tire. Easier proof... find some snow, turn off traction, floor, have friend with beer watch/videotape, profit As soon as any one wheel breaks traction all of the torque will go to it and the others are sitting there still... Quote Link to comment Share on other sites More sharing options...
27Sport Posted January 6, 2016 Report Share Posted January 6, 2016 Why would an exhaust void your warranty? It does not work like that. The dealer would have to prove evidence that the modification directly caused the issue you're looking to have repaired with your warranty. Tuning (increasing boost) would be a bigger concern from a warranty perspective than an exhaust, obviously. There is a general service bulletin that went out to dealers explaining how to identify the different causes of parts failures due to performance modifications. One listed is an aftermarket exhaust that can cause the turbo impeller to over speed and self destruct. So yes, an exhaust system can easily be proven to have caused damage. Quote Link to comment Share on other sites More sharing options...
jalm111 Posted January 6, 2016 Report Share Posted January 6, 2016 There is a general service bulletin that went out to dealers explaining how to identify the different causes of parts failures due to performance modifications. One listed is an aftermarket exhaust that can cause the turbo impeller to over speed and self destruct. So yes, an exhaust system can easily be proven to have caused damage. Backpressure Important in turbo cars however modifying anything after the DP usually has very little effect on it. Quote Link to comment Share on other sites More sharing options...
gahrsg Posted February 19, 2018 Report Share Posted February 19, 2018 It does not void your warranty. That’s a dealer trying to scare you and they most have. Quote Link to comment Share on other sites More sharing options...
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