[laynlo15]

Sounds good

[srcstc]

Originally Posted by Marty McFlew

Sounds like the stock NPP. Whats the point?

I thought the stock NPP with the valves open was basically a straight pipe and bypassed the stock muffler. Don't all the aftermarket axle-backs do the same thing... bypassing the mufflers when the valves are open?

[blazzin1]

Originally Posted by srcstc

I thought the stock NPP with the valves open was basically a straight pipe and bypassed the stock muffler. Don't all the aftermarket axle-backs do the same thing... bypassing the mufflers when the valves are open?

Not true! On the stock NPP the exhaust flow is still routed through the muffler, albeit a less restrictive path. Some aftermarket systems do route through straight pipe when ”open”, some don’t.

[srcstc]

Originally Posted by blazzin1

Not true! On the stock NPP the exhaust flow is still routed through the muffler, albeit a less restrictive path. Some aftermarket systems do route through straight pipe when ”open”, some don’t.

Thanks for clearing that up for me. So if an aftermarket axle-back is also "still routed through the muffler, albeit a less restrictive path" then it's not gonna be a huge improvement in sound?

[MR 45TH]

I think it sounds good! And the fact it’s not $1600 for 2 mufflers that’s a plus for me

[chozn4service]

My axle sounds much better than OEM as it’s more deeper and robust but not obnoxious


Sent from my iPhone using Tapatalk

[Spartan268]

Originally Posted by srcstc

Thanks for clearing that up for me. So if an aftermarket axle-back is also "still routed through the muffler, albeit a less restrictive path" then it's not gonna be a huge improvement in sound?

It's a very big improvement. Listening to something like the Borla Atak axleback vs stock, it is night and day.

[FlowmasterMufflers]

Originally Posted by srcstc

Thanks for clearing that up for me. So if an aftermarket axle-back is also "still routed through the muffler, albeit a less restrictive path" then it's not gonna be a huge improvement in sound?

This system utilizes our Outlaw race mufflers for "track mode", which we feel delivers a considerable sound difference between the American Thunder Axle-back and the stock NPP system.

Originally Posted by MR 45TH

I think it sounds good! And the fact it’s not $1600 for 2 mufflers that’s a plus for me

Originally Posted by chozn4service

My axle sounds much better than OEM as it’s more deeper and robust but not obnoxious

Originally Posted by Spartan268

It's a very big improvement.

We appreciate the kind words!

[FlowmasterMufflers]

Looking for a Cat-back or Axle-Back for your SS or ZL1? There’s no better time than now! From now until the end of March 2018 you can instantly save up to $75 off of any qualifying Flowmaster product. This offer is only available at www.flowmastermufflers.com or by calling 707-544-4761.

[WhiteNight]

Anybody have drone with long tube headers?

[WhiteNight]

Bump.

[FlowmasterMufflers]

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[MAGAUSA]

Originally Posted by blazzin1

Not true! On the stock NPP the exhaust flow is still routed through the muffler, albeit a less restrictive path. Some aftermarket systems do route through straight pipe when ”open”, some don’t.

The NPP cut out I’ve seen is a straight pipe. Yes it goes into and out of the suitcase, and it is perforated, but it’s a straight pipe.

[Pollock]

How many decibels does the flowmaster make on a stock car. Dont want to get kicked off the race track. 105 is the limit.

I have a ZL1