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I bought a used 2014 non-NPP coupe and the original owner had installed a Billy Boat FCOR-610 (maybe 0615) rear system. It's louder than I want, and my fiancée really hates it. Of course I didn't get the original exhaust parts.
I priced original parts from Chevrolet Online Parts but they weren't sure if the (V4) actuators are included in the group shown in their drawing. If they are not it will cost me OVER $1700 to get it back to stock (actuators are $315 EACH!).
I talked to a tech at Billy Boat who told me of a new system that gives the NPP-like switching using a handheld remote. He said it's $1900 but they don't sell direct. He suggested West Coast Vette.
I called them and after a day of getting the numbers, he told me the price is $2700!
The car has only 2300 miles and I really hate having to shell out so much to make it as quiet as stock. (I assume I can sell the Billy Boat exhaust once I put something else on it.)
Dave, you might want to try the corsa sport system. The actuators you speak of are part of the NPP system and the corsa doesn't use them.
The corsa sport system is the least aggressive system they offer and should be a bit quieter than the BBs you have now Maryland speed, one of our vendors has the best price
Last edited by firemon; Feb 2, 2015 at 09:44 AM.
Reason: More info
The tech at Billy Boat told me that the valves were for the V4 mode, not NPP, and they are connected to the harness on my non-NPP car. I had thought that if they were for NPP, I could run the motors to the quieter mode, but no such luck.
The Corsa description says "Nice aggressive sound..." and "This system is quieter than the Extreme system". It may still be a lot louder than stock.
I just want to be sure before spending (in this case) $1700.
A lot of guys here are using FATMAT soundproofing. I'm changing my stock out to Borla ATAK with X pipe and am also going to fatmat my C7. It's less than 100 bucks from Amazon. Search the forum, lots of discussion.
From: Detroit area and Nashville area What day is it? Between MI & TN
1) if the car for sure is non-NPP; check the options purchased. In 2104, NPP was a line item option.
2) assuming non-NPP, you should only have two valves for AFM; four cylinder mode.
3) which B&B system to you have; Bullets or PRT? See if you can get that exactly correct.
4) Check the 'parts for sale' section on this forum. Lotsa folks are axing their stock system and putting aftermarket on. When they do this they will often sell the stock system to someone like you.
5) Knowing what you have, you can place an ad in the parts for sale section and sell your current B&B to someone who wants the loud pipes; but you'll need to know what your selling - Bullets, PRT...
6) If you car is non-NPP, you CAN upgrade to NPP with a bunch of work and stuff, saving that stick to a non-NPP replacement system if you can find it if you want to go back to stock.
7) Corsa, Borla, B&B all have several difference sounding systems; aggressiveness level. Corsa touring, sport, and extremes, Borla s-type, touring, Atak, B&B.... if you dont want loud and you go with an aftermarket replacement make sure you go with the least aggressive one offered.
1. I have the window sticker. It's not NPP.
2. Yes, I have only two valves, because it's not NPP.
3. Bullets.
4. I have a possibility for one taken off. Awaiting reply.
5. It is Bullets. I don't know (or care) what the difference is between 6010 and 6015.
6. I don't need NPP.
7. I also don't need anyone's aftermarket system. That is the problem and I don't want to risk ending up as loud as it is after paying for a different one.
Last edited by DavePowell; Feb 2, 2015 at 07:15 PM.
Here is a stock set on Ebay for $600.
http://www.ebay.com/itm/2014-Corvette-Stingray-C7-stock-mufflers-/251816950313?pt=Motors_Car_Truck_Parts_Accessories&hash=item3aa175ba29&vxp=mtr
Good luck with the project. I would be gentle and careful when removing your existing mufflers. You will be able to sell them here and get your money back for the stock ones that you just bought.