Engine Performance Diagnosis

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Aug 21, 2011 | 10:59 PM

#21

stevepacman

Thread Starter

Road Master

Joined: Jun 2007

Posts: 774

Likes: 21

From: Florida

Well, she still stumbles intermittently #$%@!! I'm thinking it's not a tuning issue?

Aug 22, 2011 | 03:38 PM

#22

CurtisO

Tourer

Joined: Apr 2010

Posts: 309

Likes: 0

From: Pearl River, LA

Had my dealer install the SERT and dynotune. Ran great at WOT.I kept complaining about a stumble- felt like it would miss. (08 Road Glide) Returned to the dealer 4 times, still had a stumble around 2200-2300 rpms. They finally has a HD tech coming in to do training on the (at that time new) SEST. It's definitely better, still has trouble getting off the line when two up. Good luck.

Aug 22, 2011 | 04:32 PM

#23

6 gun

Seasoned HDF Member

Joined: Mar 2008

Posts: 9,384

Likes: 1,776

From: Central Texas

Quote:

Originally Posted by mkguitar

plugs and wires OEM style? I have read that other plugs may cause the ECM to falsely register spark knock.
resistance of wires is also important.

what exhaust system?

mike

https://www.hdforums.com/forum/touri...lug-wires.html this may be the thread mike was talking about

Aug 22, 2011 | 04:51 PM

#24

2WheelGlider

Road Master

Joined: May 2009

Posts: 930

Likes: 4

From: Jacksonville, FL

Quote:

Originally Posted by stevepacman

Took it to Adamec on Baymeadows. Gonna give 'em another crack at it since it's happening more frequently now.

Where's Doc's?

Tim, Drive belt ok...thanks!

Your problem sounds just like the problem I had. Baymeadows tuned the bike when they installed the SERT, V&H Power Duals, and SE A/C. I took it to them 3 times trying to get that stumble tuned out. Never could find it or duplicate it. WOT, bike was perfect, but when cruising at 15 to 20 percent throttle bike felt as if it was running out of gas.

I finally gave up on them and took it to Doc's Performance Tuning, and after ditching the SERT if favor of TTS Mastertune, pulling off the sorry butt V&H pipe and replacing with Fuelmoto headpipe and rush 2"exhaust, problem has been solved, and awesome for 3K miles.

FYI, when Doc pulled out my spark plugs, they showed the bike was running extremely rich! Total opposite of what Baymeadows suggested.

Although I recieve excellant service from the guys at Adamecs, I do not have any confidence in their tuning abilities. They claimed my bike spent hours upon hours on the dyno, but I never believed that, my bike was not there that long. Plus, when they gave me dyno sheet, the last run they gave me was run number 7. I watched Doc tune my bike on the dyno for every bit of 3 hours, and when he gave me my final dyno sheet it was from run #31.

PM me if you would like any more information.

Aug 22, 2011 | 05:44 PM

#25

lewain

Cruiser

Joined: Jun 2008

Posts: 153

Likes: 2

From: Middleburg, Fl

http://www.docsperformancetuning.com/index.htm

Let me know I am up for a road trip.

Aug 22, 2011 | 06:04 PM

#26

stevepacman

Thread Starter

Road Master

Joined: Jun 2007

Posts: 774

Likes: 21

From: Florida

Decided to go back to stock plugs today. I read back through my maint. log and noticed the bike ran flawlessly during the break-in 1000 miles on stock plugs. My dealer recommended I go with SE plugs for the final dyno tune.

I'm being hopeful!