Super Tuner Question

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May 19, 2011 | 12:26 PM

#41

tryus

Road Captain

Joined: Sep 2010

Posts: 514

Likes: 17

From: SW Mississippi

Harleytuner, you're a great help to a lot of folks here. Thanks. I'm in about the same tuning situation as YellowHawk was. I made a radical cam swap (SE211 to CR 575's) to a '08 FLSTC that I bought. I ride like an old man! (At 45, I guess I am old to many) I have been following this thread with great interest. I have been recording with SmartTune a little at a time over the past few weeks, and I'm about there on the VE corrections,but I'm using a starter map supplied by CycleRama. The AFR's are pretty much set at 13.6 or richer, mostly. Only a cell or two are at 14.6. Would I be better off changing the afr back to a large block of 14.6's, similar to the afr table you offered to YellowHawk AFTER his Smarttune, and then going through the Smart Tune process again? Bike's running good, a little slow to crank while warm, and will pop a little on sudden decel. Low end power is awesome. Gas mileage is around 32-38. I'm definately not satisfied with the afr tables, just not sure which direction to go.

May 19, 2011 | 04:54 PM

#42

harleytuner

Outstanding HDF Member

Joined: Mar 2009

Posts: 3,253

Likes: 222

From: Fredericksburg, Va.

Quote:

Originally Posted by tryus

Thanks for the kind words. you can go ahead and set the AFR tables right now if you'd like. no reason not too. you should definately improve your fuel economy right away. Go ahead and run a few more Smarttune runs after you do it, it shouldn't make a huge difference thoug, when you enable Smarttune it uses it's own AFR tables and ignores the user set tables. The tables I posted for YellowHawk will be good for you. There are two ways to take care of your pop on decel. If the pop occurs as soon as you let off the throttle (within a second) you can lower the number in your decel enleanment table. (Lower the number the more fuel you are adding, opposite the VE tables). If you have an '08 or newer touring bike (throttle by wire) you and try adding 5 at atime to all the cells in the 0 through 5 TP's from around 1750 RPM's and above, do this to both tables front and rear. If your bike has throttle cables (anything other than '08 and newer touring bikes) you and add 5 at a time to everything 1750 and above in the 0 (zero) TP column. The goal is to add fuel when you let off the throttle to cool the pipes. Some pipes are extrememly difficult to get rid of decel pop, especially on touring bikes that have the stock headpipe on them. The left side pipe really doesn't have good flow and when you let off the throttle it actually sucks air cack up into it and exhausts it out the other side, that causes decel popping.

Sep 7, 2012 | 09:21 AM

#43

bret-99

2nd Gear

Joined: Aug 2012

Posts: 6

Likes: 0

From: Colorado via Texas

Old thread, but very useful

Great info here. Lean condition and decel pop after I installed Big City Thunder Baffles in my big radius pipes. Dealer couldn't fix, but SESTP and info here allowed me tune out the decel pop and take advantage of even better flowing pipes. Thanks for putting this out there.

Jul 29, 2013 | 02:00 PM

#44

EMTY66

Advanced

Joined: Jul 2013

Posts: 53

Likes: 1

From: Alberta Canada

I have a 2012 flhtk. Pings when hot. Some say it might be the e fuel and others say I need a super tunner. Harleytunner, can you shed some light on this for me.