Cracking on Deceleration

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Oct 31, 2009 | 10:43 AM

jrdabs

Thread Starter

1st Gear

Joined: Sep 2009

Posts: 5

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From: New Jersey

Cracking on Deceleration

I just installed V&H Big Shot Duals, HD SE Heavy Breather and the Terminal Velocity 3 module on my 2009 Road King Classic. I put about 65 miles on since I did the upgrade. I have no backfiring and it seems to have adjusted itself fine with regards to acceleration. Is the cracking normal on decelaration?

Thanks

JR

Oct 31, 2009 | 11:54 PM

stevelonewolf

Road Captain

Joined: Oct 2009

Posts: 649

Likes: 2

From: DeLand, Florida

Sometimes decel cracking or decel backfire can be caused by cold air being sucked in the exhaust header where the gaskets go. Did you change your exhaust gaskets? If so,did you use the cone style or flat flange style. Check for proper seating. and maybe consider getting the download from harley.

Nov 1, 2009 | 05:25 AM

Hillsidecycle.com

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Joined: Dec 2007

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While attending the certification classes for Power Commander Tuning, (we do not tune EFI, carb-only Dynojet, but class was very informative) the instructor informed us that you can either "drown" that with mucho fuel on decel, or "starve" it. Don't know if that controller has the ability to do that.