sert dyno tuning

well i had to come to the forum 1 to vent and 2 to gather knowledge from the greatest of the motorcycle world.

i have a 103 flhtc with a sert , woods 555 cam, s/e air cleaner,, v/h header pipe with h/o 4 in round mufflers, harley heads that were ported n polished for tour riding (v-twin did the job wtg kibry awesome).

So i am dealing w/a reputable hd place and @ 125.00 an hour to tune this machine have gotten no where. I was told by the previous service manger when the prob started (cause the tuner entered the wrong information that was a friggin disaster) that the pc i had wasn't the best and persuaded me to the sert because it had the ability to dial and tune it in precisely. also he been to school for sert tuning and he could dail in n on, well he don't work there no mo.?

well now they are telling me they tuned it across the board for riding ability. so i have been able to figure it out somewhat they don't know wtf they are doing!

the prob i have is on decel and re accelerate it has a flat spot. 1st it was at hi rpm, they readjusted it , now it's mid range it has a flat spot.

so wtf do i do i have heard of a guy who lives in montoon ill which is bout 3-4 hrs away that is possed to be the midwest dyno king, but like i said the dealer i have already paid 500 dead presidents so do i eat their shit again and go to the other tuner r be a pain in the ass customer to them ,

really i would be like everybody else to them according to them so any advice help suggestion would be helpful i ask the motorcycle garoos . why can they not tweak this mofo to preform flawessly? there is nothing difficult in the engine y cann't they read r understand the input?

There is only one person that can truly help you and he has hos hands full at the moment. I will reach out to him for you. Patience please. This forum will help.

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What year 103 bagger what exhaust compression ratio .and is the throttle body stock please post a copy of the dyno sheet with air fuel ratio .and if you had a power commander it would have done the job with no problem .but a sert in the correct hands is fine as well and much more tunning areas.

hey folks here the arf n dyno hope u can see it ty look forward to the response. the afr in middle range is below the red line

Yes he is running DRESSER DUALS. It is mentioned at very bottom of chart in the notes.

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Looking at the chart. Tune is nice beautiful curve if it is drive by wire you could have them twek the throttle progresivity. Its under the advanced tunning section brings in the throttle blade quicker giving the tps on the throttle body a quicker responce .I would love to see the datastream and see what the o2 sensors are doing on decel and re accelaration .that's when you say you have a tip in problem. I would like you to give this a try. and I will explain in a moment. When bike is completely cold as in say it sat over night. Please disconect the battery for 10 seconds . Reconnect turn the ignition on . Flip the start run switch on wiat for the check engine light to clear and start it do not hit t he throttle just let it idle till the primary case is warm don't rev it just let it idle . Shut it off get your riding gear on .and go ride .what you just did was clear all fuel off sets in memory and it will relearn all new off sets from 02 sesor imputs don't beat on it just ride it your not clearing any thing but long term and short term fuel trims.and tps positions let it learn as you ride see if the tip in is gone after that. It cant learn this on the dyno .they are idle to wide open pulls it learns those to positions well.

here is a better pic i hope has a larger afr and curves. I spoke with v/h about baffles in exhaust. i have no baffles well i had them lost the right baffle in ark at the blues bikes n b b q in sept. so i took em out instead of buy another 1. well v/h sezs needs baffles for back pressure to insure the motor run correctly cause w/o em they the exhaust is like running wide open pipes. so i will try this n see what happen, thank you

Well that graph looks nothing like the other one .that dont look good at all its not hitting hard till way past 3300 rpm the beginning of the run looks like tire shake on the drum or clutch slip and then it starts to try to put the power down .put the BAFFLES back in reset af ratio and make sure the. CLUTCH holds those 555 hit early in the power band

ok tyvm a great help ty

why would the clutch slip? if it is in 6th gear? ss dumbass here

Thats when the clutch slips the most!your less then 1.1 ratio all the load is on the clutch side and the high gear main drive lots of strain on the clutch ! If the run was done in 3 4 5 not as much on the clutch more leverage on the final drive .

What muffler are you running? I am using the exact same head pipes and am running the monster rounds. I have a spare set of baffles if you are interested? They sound good. Ask BaggerPual.

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ty v/h sezs that h/o r different from monster rounds plus i bought some new 1 again yesterday ty