Fictional story if the CARB guys are on this thread. "I had to have a slip-ons for my LRST shipped to a buddy in MN then shipped to me"

 

For every 1 person here that actually knows his stuff, there are 100 dumbasses that ruin it for the rest of us.

 

Yeah but are you the 1, or just one of the 99?

 

Neither. I'm just here to learn and help where I can.

 

I'll try to reel this discussion in one more time. I was NOT asking for anyone's OPINION on whether to tune or not to tune. I was looking for real-life experience with this. IF you went ahead and added an AC, slip-ons, full
exhaust in whatever combination and DID NOT tune your bike..........what happened? I've heard from 3 people (some PM), who did and said no issues at all. Haven't heard from anyone who did it and a disaster followed. So please, keep your opinions to yourself.

 

Interesting thread/ question.
Post 11 answered the OP question, there may be a few others who answered.

Backfires (pop & snaps) and looking at the spark plug color (before and after - more white for example) could be symptoms of a pending disaster.
A hole in the piston top, seized cylinders I would define as disasters.
It may be the OP is seeking examples of non-tune failures.

Then my opinion , seems most Harley, even if stock, for the last two decades need to be fuel enrichened from 14.1 to 12.1 or so) for better throttle response/ performance and a cooler running engine. Will an air/ fuel tune avoid a disaster? I do not know.

Again, interesting thread/ question.

 

My wife's '22 114 FXBBS has been running slip-ons since purchase and it already has a "high flow" air cleaner from the factory. Never had a single issue and runs like a champ. This question of tuning M8's with a "stage 1" has been put to bed many, many times on this forum.

Now, can we get back to more important topics like the best oil, jiffy vs kick or which side you air your tires on!

 

Did you ask those folks "who did it and nothing happened", how many miles they put on those bikes afterwards?

 

Got it!
2022 Low Rider ST - Swapped high flow snorkel for flat HD ventilator (stock units on the M8 114s) and S&S Grand National slip-ons. No Tune, ~1,100 miles runs perfect.
2029 Fat Bob 114 - Swapped Grand National slip-ons. No Tune. ~3,200 miles runs perfect.
Co-Worker's Bike - 2022 Low Rider S. S&S air cleaner and full 2:1 exhaust (not sure on brand). No Tune. ~9,000 or so miles. Runs perfect.
Low mileage on these bikes so jury is still out on long term issues.

I haven't heard on this forum or FB Groups anyone with a M8 bike that swapped A/C plus slip-ons or full exhaust without tune that have had issues. Although I will say most who do a complete exhaust do some sort of tune, but have not heard of any disasters not doing the tune.

P.S I am no expert just a dude that has owned a ton of bike. Lol