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Range Device AFM - exhaust note !

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Old Jan 11, 2020 | 10:43 AM
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Default Range Device AFM - exhaust note !

Question: I have a 2019 Stingray LT2 that I just bought back in September 2019. I currently have 1,750 miles on the car and after reading all the posts about the shuttering, etc... I bought the Range AFM DISABLER - so my question is if it’s installed and it keeps it in V8 all the time will the “exhaust valves” still be open ALL THE TIME ? That’s what I would actually prefer !!! Also, I’ve configured the settings to have the sound in track mode and the steering in sport mode and always drive in sport !!!

Thank you... Steve
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Old Jan 11, 2020 | 10:46 AM
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The Range device has no effect on the exhaust valves.

There is a fuse you can pull if you want the valves open all the time. A quick search should reveal the correct fuse for your year car.

Last edited by Elk; Jan 11, 2020 at 10:50 AM. Reason: spelling
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Old Jan 11, 2020 | 10:48 AM
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The range device has no effect on the valves Pull fuse #42 to keep your exhaust valves open. It might be #87 for 2019's, so double check.
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Old Jan 11, 2020 | 10:52 AM
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^ Correct above. See below as to which fuse to pull for specific models to keep exhaust valves open all the time.

NPP Exhaust Fuses - Fuse # 41 (2014), #42 (2015 - 2018), #87 for 2019
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Old Jan 11, 2020 | 10:52 AM
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Originally Posted by Elk
The Range device has no effect on the exhaust valves.

There is a fuse you can pull if you want the valves open all the time. A quick search should reveal the correct fuse for your year car.

Your awesome - Thank you... Thank you...
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Old Jan 11, 2020 | 10:53 AM
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Originally Posted by Kevin A Jones
^ Correct above. See below as to which fuse to pull for specific models to keep exhaust valves open all the time.

NPP Exhaust Fuses - Fuse # 41 (2014), #42 (2015 - 2018), #87 for 2019
thanks so much !!
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Old Jan 11, 2020 | 10:55 AM
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Originally Posted by Kevin A Jones
^ Correct above. See below as to which fuse to pull for specific models to keep exhaust valves open all the time.

NPP Exhaust Fuses - Fuse # 41 (2014), #42 (2015 - 2018), #87 for 2019
thanks so much !!
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Old Jan 11, 2020 | 11:11 PM
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The Range Device keeps the car from going into V4 mode.
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Old Jan 12, 2020 | 02:10 AM
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My understanding is that the exhaust afm valves purpose is to close to some degree in V4 mode to increase back pressure. Since the Range device prevents V4 mode, the afm valves should remain open at all times? If so, there would be no need to pull exhaust fuse. Just asking.
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Old Jan 12, 2020 | 02:50 AM
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Originally Posted by BillyC7
My understanding is that the exhaust afm valves purpose is to close to some degree in V4 mode to increase back pressure. Since the Range device prevents V4 mode, the afm valves should remain open at all times? If so, there would be no need to pull exhaust fuse. Just asking.
The fuses that were correctly listed refer to the NPP valves at the end of the exhaust system. The AFM valves are left alone to be controlled by the ECM or BCM (whichever).

You are correct that the AFM valves are directly in response to the V4 mode. You do not pull the AFM fuses.

Elmer
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Old Jan 12, 2020 | 03:05 AM
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Thanks! I have a non-NPP Stingray and added AWE afm valve back mufflers. Sound is great and don't need to pull fuse. Also does not affect warranty or emission test in the future.
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Old Jan 12, 2020 | 03:23 AM
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Should have mentioned I have been using the Range device since mile 2000, thanks to the Forum info.
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Old Jan 12, 2020 | 05:14 PM
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You can also get a mild to wild device which keepers the valves open all the time.
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Old Jan 13, 2020 | 02:21 PM
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Thanks all for your input - I really appreciate the help !! Since the other day I've installed the Range AFM Disabler and I'm good to go - NO issues at all and seems to be a "smoother" ride during shifts.
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