C8 borla atak install problem
Thread Starter
Instructor
Joined: May 2018
Posts: 125
Likes: 55
C8 borla atak install problem
I just got a phone call from the exhaust shop telling me my c8 only has the electrical connection for 2 valves instead of 4. My c8 did not come with performance exhaust. If it had performance exhaust I would have the connectors for the NPP instead of just the DFM. What happens now? The website I bought this from did not say a thing about this. Is there any way to make this work? My exhaust model is 140839. Will the NPP valves simply stay open without a connection to them or do I have to buy the borla atak exhaust with no NPP valves? Could the valve or any of its parts be removed?
Last edited by DeanJohnson; Jul 27, 2023 at 05:38 PM.
Racer
Joined: Mar 2023
Posts: 264
Likes: 232
From: Cape Vincent, NY
I just got a phone call from the exhaust shop telling me my c8 only has the electrical connection for 2 valves instead of 4. My c8 did not come with performance exhaust. If it had performance exhaust I would have the connectors for the NPP instead of just the DFM. What happens now? The website I bought this from did not say a thing about this. Is there any way to make this work? My exhaust model is 140839. Will the NPP valves simply stay open without a connection to them or do I have to buy the borla atak exhaust with no NPP valves? Could the valve or any of its parts be removed?
I do think you can find a NPP valve delete connector that will keep the valves open all the time but I am not sure how that would effect the car or exhaust, probably need to send a note to Borla asking them.
Thread Starter
Instructor
Joined: May 2018
Posts: 125
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I hate to bring bad news but the first line on the Borla web site is "System includes AFM and NPP Valves. Do NOT install on vehicles without O.E. NPP Valves.".
I do think you can find a NPP valve delete connector that will keep the valves open all the time but I am not sure how that would effect the car or exhaust, probably need to send a note to Borla asking them.
I do think you can find a NPP valve delete connector that will keep the valves open all the time but I am not sure how that would effect the car or exhaust, probably need to send a note to Borla asking them.
I didnt buy these from borla or their website. I bought them from another website and even spoke to a sales rep that confirmed this would work on my car. Borla does sell a nonNPP version of the atak however that version isnt on the website I bought mine from. Due to there being no expected power or communication to this valve I should be fine as long as it can stay in the open position. I just need to find out how that is possible. If by NPP valve delete you mean simulator I dont need that bc the wire or connector doesnt even exist on my car. I Just need the valve to stay open and then after the relearn it should be fine unless anyone here can say otherwise from experience.
Racer
Joined: Mar 2023
Posts: 264
Likes: 232
From: Cape Vincent, NY
I didnt buy these from borla or their website. I bought them from another website and even spoke to a sales rep that confirmed this would work on my car. Borla does sell a nonNPP version of the atak however that version isnt on the website I bought mine from. Due to there being no expected power or communication to this valve I should be fine as long as it can stay in the open position. I just need to find out how that is possible. If by NPP valve delete you mean simulator I dont need that bc the wire or connector doesnt even exist on my car. I Just need the valve to stay open and then after the relearn it should be fine unless anyone here can say otherwise from experience.
Race Director
Joined: Jan 2014
Posts: 10,709
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From: Fulshear, TX
I didnt buy these from borla or their website. I bought them from another website and even spoke to a sales rep that confirmed this would work on my car. Borla does sell a nonNPP version of the atak however that version isnt on the website I bought mine from. Due to there being no expected power or communication to this valve I should be fine as long as it can stay in the open position. I just need to find out how that is possible. If by NPP valve delete you mean simulator I dont need that bc the wire or connector doesnt even exist on my car. I Just need the valve to stay open and then after the relearn it should be fine unless anyone here can say otherwise from experience.
Borla does in-fact sell a non-NP version of the C8 ATAK system! You will need to perform the relearn procedure for the AFM valves only. Also, this is new information to me that Borla is making a non-NPP version of the C8 ATAK system! Thank you for sharing that, I also just looked it up on their website. The difference vs. the NPP valved system will likely be the muffler internals/baffles to minimize drone. My advice would be to contact Borla and to confirm any differences and ask about swapping just the two muffler portions with them since the order was in error. Their customer service is very good and they typically seem to do what it takes to take care of people.
https://www.borla.com/products/chevr...-system-140841
Last edited by Kracka; Jul 28, 2023 at 08:36 AM. Reason: edited for clarification due to new information
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From: Fulshear, TX
Burning Brakes
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From: NJ
Should have done more up front research. As @Kracka stated, Borla does NOT sell a non-NPP version of any of their C8 exhausts.
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