Tune out decel pop - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Quicksilver2SS · 10-19-2018, 09:40 PM

I have an NPP exhaust with the fuse pulled, really like the sound other than the crackling on deceleration.

What should a tuning shop charge for just that change in the computer?

Hopefully I can find a place that will do that 1 change...

Thanks!

JANNETTYRACING · 10-22-2018, 12:21 PM

Quote:

Originally Posted by Quicksilver2SS

I have an NPP exhaust with the fuse pulled, really like the sound other than the crackling on deceleration.

What should a tuning shop charge for just that change in the computer?

Hopefully I can find a place that will do that 1 change...

Thanks!

You really would not want to go through the process of tuning and not take full advantage of all the benefits of a full custom tune.

Purchase an SCT X4 tuner from me and get your first full custom tune FREE.

Then you will be on our buy parts from me get tune updates for free program.

https://jannettyracing.com/products/...x4-power-flash

Ted.

dreksnot · 10-22-2018, 01:28 PM

Here's a screen shot from HPTuners of the fix for me. I disabled DFCO (decel fuel cut-off) by making the Enable ECT (engine coolant temperature) 414*F (so it doesn't happen). The default is 14*F. Like Ted said, it's not worth having a shop just change that - it literally takes a few seconds to make the change and about 45 seconds to flash the ECU.

There can be other factors like adaptive idle coastdown timing and timing, but this is the first and easiest approach to tackling the decel popping.

xc_SS/RS · 10-22-2018, 01:47 PM

Quote:

Originally Posted by Quicksilver2SS

I have an NPP exhaust with the fuse pulled, really like the sound other than the crackling on deceleration.

What should a tuning shop charge for just that change in the computer?

Hopefully I can find a place that will do that 1 change...

Thanks!

All you gotta do is change the DFCO timing to make the pops softer. If you know someone with hp tuners they could do it for ya quickly. It's two tables that need changing

Doubt a shop would charge much to make this change. I wouldn't advise disabling it as it'll impact mpg's

10-19-2018, 09:40 PM	#1
Quicksilver2SS Drives: 2SS/RS LS3 NPP Join Date: Feb 2018 Location: Sacramento Posts: 227	Tune out decel pop I have an NPP exhaust with the fuse pulled, really like the sound other than the crackling on deceleration. What should a tuning shop charge for just that change in the computer? Hopefully I can find a place that will do that 1 change... Thanks!

10-22-2018, 01:28 PM	#3
dreksnot Served USN - Atomic Chimp Drives: 13 Camaro LSX434 TT M6, 21 ZLE A10 Join Date: Jul 2012 Location: Fort Collins, CO Posts: 1,603 View My Garage	Here's a screen shot from HPTuners of the fix for me. I disabled DFCO (decel fuel cut-off) by making the Enable ECT (engine coolant temperature) 414F (so it doesn't happen). The default is 14F. Like Ted said, it's not worth having a shop just change that - it literally takes a few seconds to make the change and about 45 seconds to flash the ECU. There can be other factors like adaptive idle coastdown timing and timing, but this is the first and easiest approach to tackling the decel popping. Attached Images __________________ In excess of 1,000WHP LSX434 \| AGP 65/65 TT \| BTR Equalizer Intake \| Trickflow 245cc cathedral \| BTR custom cam \| Cortex EBC \| n2mb WOT \| ID-1700x \| Brisk GR12S \| RPM Lv 7 TR6060 \| AGP's Triple 525LPH Fore Fuel \| Monster LT1-S Triple \| 4.11 DSS Proform 9", CF driveshaft, 1400hp axles \| Hurst Line Lock \| MGW Retro Short Throw w/old skool Hurst T-handle \| ADM solid subframe mounts \| Prothane Motor Mounts \| Revshift Poly Trans insert \| Moreno camber/caster plates