[7stringtheory]

I decided to turn this into its own thread to hopefully attract the expertise of some people with firsthand experience.

Normally I would never consider an axleback exhaust, because I would rather just get headers / delete cats etc..

I have decided however, that I want to maintain the warranty on my 1LE, as well as maintain a street classification in autocross. This means I basically cannot do any performance mods whatsoever.

This has me considering the ATAK axleback because of the the hype surrounding it, and some of the youtube videos I have seen.

Does anyone have any ACTUAL experience in person with hearing this axleback compared to a stock NPP? Is there an actual difference in volume or tone? In your opinion if no other options are available currently (except for getting an axleback) is it worth the $1600?

Keep in mind that in this specific situation no performance mods are on the table so an oppurtunity cost does not exist except for maybe buying a new set of wheels lol.

[chozn4service]

Subbed.....


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[jaymsu]

I have the Atak axle back. Comparing it to stock NPP, it's definitely louder, especially at WOT and cold start, and tone is better too. (more aggressive yet not too crisp sound like some other aftermarket ones) It's bit lighter than stock too, and there is absolutely no drone.

I love it!!

One thing you need to be careful about is NOT to start the car when young ones or old ladies are standing behind your car. You don't want to make them cry or have heart attack. My wife's friend (who's not that old) dropped her coffee cup when I started a car while she was standing behind it. Yeah, it's that loud.

[chozn4service]

Have a sound clip, cost, who you purchased from? I know I hate that restriction in front of the rear axle and for the life of cant figure out why GM would do such....


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[camarofan12345]

I echo jaymsu's comments on the ataks. They are incredible. My 1LE came with the NPP, but I chose the Ataks without the NPP function. I also got the secondary cat delete midpipe, part was the 60606 one. With both of these installed, the cold start is almost deafening in the garage, lol! Yes, these will scare anyone who isn't expecting the car to be started up or isn't aware. I love getting gas and hearing crank up under the roof....it lets out a beautiful rasp like a whip and then pops!
Overall, it has IMO, taken the fun level up another notch for me. Caution is advised as your gas mileage will be on existant! Self control is advised!!

[Megahurtz]

Borla gets my vote. I would go head and buy the Xpipe/mid section as well. The Borla X pipe will make their axle back sound even better.

I have the Borla S-type NPP system with Borla X pipe secondary cat delete option. Sound amazing. I'll be adding headers soon.

[camaromike77]

Originally Posted by Megahurtz

Borla gets my vote. I would go head and buy the Xpipe/mid section as well. The Borla X pipe will make their axle back sound even better.

I have the Borla S-type NPP system with Borla X pipe secondary cat delete option. Sound amazing. I'll be adding headers soon.

I agree 100%....... I was only able to go axle back (Borla S-type NPP system) due to the extra re-enforcing / structure on the underneath of the convertible. A buddy of mine went Borla S-type NPP system with Borla X pipe secondary cat delete option. Like Megahurtz mentions here - sound AMAZING!!!!!! . The ATAK will be a bit louder......

[FlashBang23]

I thought the stock NPP system was great and was unsure about replacing it.....ended up with a Borla S type cat back and I like it much more. The tone is much deeper and obviously has a lot more volume. I voted to keep the NPP valves however mainly because I think they're cool. If you like loud, I doubt you would be disappointed with the S type or ATAK

[honk3x]

Subbed as well. I'd love to hear someone with the Borla S-type or ATAK in person. I see the OP is in Plano, I'm in Fort Worth. Anyone in DFW with one of these two axle backs with NPP?

[TJay74]

Originally Posted by 7stringtheory

I decided to turn this into its own thread to hopefully attract the expertise of some people with firsthand experience.

Normally I would never consider an axleback exhaust, because I would rather just get headers / delete cats etc..

I have decided however, that I want to maintain the warranty on my 1LE, as well as maintain a street classification in autocross. This means I basically cannot do any performance mods whatsoever.

This has me considering the ATAK axleback because of the the hype surrounding it, and some of the youtube videos I have seen.

Does anyone have any ACTUAL experience in person with hearing this axleback compared to a stock NPP? Is there an actual difference in volume or tone? In your opinion if no other options are available currently (except for getting an axleback) is it worth the $1600?

Keep in mind that in this specific situation no performance mods are on the table so an oppurtunity cost does not exist except for maybe buying a new set of wheels lol.

Just a FYI and in the words of a singer, not to crash your party but if you put a catback on the car GM will not stand behind the track warranty on the 1LE. Al has confirmed that several times and even on an email discussion with me he confirmed it again to me in my email. If you want the GM OEM track warranty coverage the 1LE cars have to remain bone OEM stock other than expendables like tires, brake pads and fluids (provided they meet GM specs). You can get away with wheels and such but when it comes to the drivetrain I asked him about CAI kits and catback kits and he said if you want the track coverage leave it stock.


Now as far as the drivetrain warranty you are fine to run a CAI and catback out on the road on a daily driver, this only relates to those who are taking their 1LE cars and using them on the track on track events and wanting to be covered under the GM track use warranty coverage. GM is the only automaker who is even offering this type of coverage in writing, and there has already been 1 1LE owner who had to use with a total engine loss at the track.

[7stringtheory]

Originally Posted by TJay74

Just a FYI and in the words of a singer, not to crash your party but if you put a catback on the car GM will not stand behind the track warranty on the 1LE. Al has confirmed that several times and even on an email discussion with me he confirmed it again to me in my email. If you want the GM OEM track warranty coverage the 1LE cars have to remain bone OEM stock other than expendables like tires, brake pads and fluids (provided they meet GM specs). You can get away with wheels and such but when it comes to the drivetrain I asked him about CAI kits and catback kits and he said if you want the track coverage leave it stock.


Now as far as the drivetrain warranty you are fine to run a CAI and catback out on the road on a daily driver, this only relates to those who are taking their 1LE cars and using them on the track on track events and wanting to be covered under the GM track use warranty coverage. GM is the only automaker who is even offering this type of coverage in writing, and there has already been 1 1LE owner who had to use with a total engine loss at the track.

this is an axleback exhaust not a catback

[MAGAUSA]

Originally Posted by 7stringtheory

this is an axleback exhaust not a catback

The message from TJ should be well taken though. Any modifications could present a problem with warranty coverage and unless you're prepared to pay for an attorney to argue Magnusson-Moss and all of that, it really doesn't matter what any of us think should could or would happen if a repair is needed with a modified car. They can deny anything and then it's up to you and your wallet to pay for the attorney.

[chozn4service]

Originally Posted by 7stringtheory

this is an axleback exhaust not a catback

An axleback is not a catback totally different things. A catback will not void a warranty on the SS and neither will an axleback. Headers will void things.


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[TJay74]

Originally Posted by chozn4service

An axleback is not a catback totally different things. A catback will not void a warranty on the SS and neither will an axleback. Headers will void things.


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And you all are talking a normal daily driver warranty out on the road driving to and from work versus the track warranty coverage that GM exclusively offers for the 1LE, ZL1 and ZL1 1LE that states the cars have to be unmodified in order for GM to cover them if a failure happens while on the track.

It is up to the OP, while it could be a catback or axle back it really doesn't matter. The OP explicitly said he was interested in using the car for autocross events and GM has said in writing several times in several places with Mr. Wyndham on this board sharing a conversation with Al from GM who is over the Camaro platform and I myself who had a conversation with Al as well, if you want the 1LE to be covered if you are going to use it on the track then the car better be bone stock down to the OEM airbox and full exhaust system. Nothing other than wheels, tires, brake pads, and fluids that meet specs can be used. Otherwise GM will not cover the vehicle if it was used on the track and has a catastrophic failure.

As I said, a owner has already lost an engine in a 1LE while on the track that GM took care of stood behind just like that said, not sure if I would want to push that if I was tracking my car unless I had a large enough wallet to stand behind the repairs myself.

Just my $.02 on the topic.