Hey,
i bought a dyna with a tc96 back in 2019 with 20000 km on it. My preowner installed a kesstech slipon with a catalytic converter for the stock exhaust manifold and a k&n drop in airfilter. When i bought it, it had a lot of decelpop and pinging under haevy acceleration. I drove it like this for a month and than asked the dealership if this is how it is and if i could leave it like this. They told me, that more fuel wouldn't hurt so i bought a fp3 and a new 2 in 1 exhaust from red thunder also with cats https://shop.redthunderexhaust.com/c...s/dyna-6-speed. (by the way i had a slight oil consumption from the beginning). I installed bove and flashed a tune for an high flow airclaener and thunderhaeder with quiet baffles on it. The oil reached temperatures up to 140 ° celcius during the summertime and the oil consumption gets worse so that i had to add i litre in 1000km. Last year in November the dealership i bought the bike from eyeballed my issues and than they rebuild my cylinderheads because one valve was bad and they put new pistonrings in it. They've also noticed some carbon buildup on the pistons.
Now the engine is running even better than when i bought the bike. So i guess the engine had a problem from the beginning.
Could the lean mixture and the the heavy decelpop cause the damage on the exhaust valve?
I am currently running the stock aircleaner and the redthunder exhaust with cats and get some decelpop only under ~1800-2100 rpm. Should i flash a tune via fp3 on it?
And what tune would you suggest? Maybe a tune for a stock engine because i am running cats? Or would you just go with xieds or something else?
I am a little bit concerend, that a wrong tune could damage the engine again.

 

140*c is 284*F. If your oil got that hot it would be on the verge of thermal breakdown.. Not good for any motor... Take it to a shop that tunes with the FP3 and have them tune it properly... Or have you tried to do any auto tune sessions...? Not sure if you can or can't with the FP3, I use a Power Vision..

 

The oil reached 284°F before the heads were rebuild. Now the highest temp was 248°F and 125mp/h wot on the autobahn and stock tune. You can autotune it with the fp3 but v&h only offers tunes for exhausts without catalytic converters.

 

That's good to hear.. Then stick with the tune you got and keep doing auto tune sessions.. Your not far off as it is.. Especially if you continuously cruising at those speeds..

 

Thank you for your reply.
I don't have a tune on it now. As mentioned my exhaust has a cat in it, should i use a tune for a stock engine?

 

If the time that is currently in it working pretty good I would just try to auto tune it.. (fine tune the tune you have)

 

Use the Stock Improved map under the HD manufacturer, then AutoTune from there.