What do you guys consider a desired AFR at the 2200-2900RPM cruising range on the 96" '07's with SERT tuning?
Also the desired AFR at WOT?

 

My desire is to have 14.1 to 14.2:1 in cruise and any where from 12.8 to 13.2:1 at WOT

 

Thanks Doc

So the AFR line with a "finished" dynotune should run in the 14.1 to 14.2:1 range all the way across the dynomap from beginningof the RPM range tilldropping to 12.8 to 13.2:1 at WOT?

Just trying to check the validity of what 2 different tuners are trying to sell me.

 

Ultra...

I've followed your posts for a while...have you TOTALLY eliminatedANY ping with your SERT ?

 

D

I'll be slightly long winded on this reply so bear with me. As for "PING", I experienced it once on a ride in the Ozarks this past winter but I'm going to have to refer the reason to the fact I was forced to use 91 octane at a gas station that had 1 hose for all 3 blends, so the first 1/2 gallon was more than likely 89 octane. The ping came on with a HARD 75mph rollon to pass a bluehair holding up traffic on the highway. Since that time I have not experienced any more PING. However, Now that it is warming up, I have not been able to ride for all the torrential rainfall we have been experiencing here so hopefully that will break soon and I can get out and stretch the legs on the scoot.

To the meat of the reason for my seemingly elementary question(s). I was at a dealership and the dynotech was going over some of the maps of customers he had saved in his computer and we were reviewing AFR, TQ, and HP on the various builds. Not judging a book by it's cover, but thedynotech looked like he had fried all of his brain cells in the '60's, and the last surviving one may have been struggling to hang on. So in reviewing these maps he had "questionable" HP and TQ numbers for what I would have expected to be more so this offered more questioning of this guys ability in my eyes.

He said he likes to dynotune the cruise range to an AFR of 14.1 and WOT to 13.8.....weeeeeelllllll, I informed him that I'm not too interested in "economy" but instead wanted a bit more gas poured to the cylinders for a little bit of torque/hp enhancement WITHOUT the motor hitting a wall at 75-80mph and falling on it's face, therefore, what he had in mind for a desired AFR I was hoping for a compromise.

Needless to say I left THIS dynotuner satified with my canned map w/02 bias tables maxed as this seemed to be all I probably would have gotten from this dynotuner in the AFR range.[&o]

Now where is SHB, OSE, and Doc1, murph, geargrinder(and anybody else that I may have forgotten).........is it too much to ask for an AFR of 13.2-13.8 in the cruise range with an AFR of 12.8:1 at WOT?

 

I agree with Doc 1's response if you do notwant tolive on that "lean is mean" dangerous ragged edge.

 

Ultra...thanks for the reply. I may go to a SERT one day...right now I'm on a PC and it has helped a ton. I used a canned map exactly for my set up...ovals and a SEAC. I have played with it a bit and experimented with the timing table by retarding it -2 in the 40 60 80 100 throttle position from 2500 rpm to 6500. I had the 0903 download as well. Weather here has been 85-90 degrees lately and I always run 93 octane. I think all of my ping is gone EXCEPT if I jerk the throttle at a cruising speed...then I get a very brief chirp sounding detonation. I'd like to get rid of that as well. I had a tech I trust tell me that may not be possible but we'll see. (he is not a dyno guy)

I've followed alot of posts on the SERT for months and actually copied stuff into a word file to review later if I go with a sert. I'm also checkin out the TM w/ autotune.

 

D

PM iclick(forum member),Bob(iclick) has really fine tuned his PCIII for his '07 Steetglide and will more than likely share his map with you, complete with timing changes............you can use it to atleast compare to where you are.

 

GG, elaborate on the "dangerous ragged edge" please.[&:]

Thing with my SERT and canned map w/maxed 02 bias tables is, this thing pulls good up top. Coming from metric bikes I like the confidence of being able to pass in a pinch. Right now this setup will allow me to do that. I'm wanting to richen it up for even more oooommmph!

 

Yes, you CAN set it up that way.... But FIRST, you have to ensure that your VE's are dialed in damned near perfect (within .5 :1 AFR ..... Starting with ALL cells in the Desired AFR to 13, you then tune in your VE's at TP and RPM's by using the STEP mode on a Dynomemeter (Load Controlled Unit)....

Once that is done, you go into your Desired AFR table and start changing the values to what you are wanting them to be.....

I dunno why you would want it that fat on cruise, and as far as WOT, your table is showing 12.5 at 90 & 100 % load... Maybe even down to 11.5....