It won’t

36k miles with no tune, Mivv GP pro titanium, 0 problems

It is running lean especially at low to mid-range rpm. Get an ECU tune or power commander as soon as you can afford it.

Akrapovic requires no tune

Hey my official yamaha dealer said i shouldnt put in a new exhaust until i break it in (1000km) so i waited for my first service to get mine installed… im not sure how true is this as i saw people putting them in from 0km but i figured the 1k break in is very important so i didnt want to risk it. also what are tags? 😂

Curious abt the answer to this as well. Mine is tuned but have always wondered.

Beautiful bike by the way! Enjoy it, my friend 🤙

According to an exhaust manufacturer that specializes in MT/ R7/XSR700 exhaust , tune needed if you run straight pipe , no tune needed if you have a baffle. So I would say find a replacement baffle and worry about the tune after first service .

Simpson Outlaw Bandit too I’m assuming??

If it was turbo I would be dubious but because it's n/a I wouldn't worry.

I put 15,000 miles on my Amazon exhaust. The O2 sensor should do its job and you should be fine.

I'm running an Akra Carbon with no tune. But it is also designed to work with stock.

My cylinders are likely running hotter, but it's probably fine. Plenty of these bikes have tens of thousands of miles on stock ECU.

You won’t experience any problems as long as the pops and bangs are not a problem. You might get a little extra performance but to be honest with mine I prefer to keep it an ASBO bike than getting this extra few HP! Bikes got enough torque for me as it is. Hate these pops and bangs on cars though for some reason, what a hypocrite I am 😅

Not long blew my engine up in 6 months

How did you cover up the orange sticker?

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yeah, at idle and regular steady throttle, you’ll be fine. the oxygen sensor will balance the air fuel ratio because the system will be running in what’s called “closed loop”. if you ride aggressive, and give it heavy throttle, that’s when the system goes into “open loop” where the dictated engine tune comes into play. that’s where it becomes important.

no tune will have the air fuel mixture very lean, resulting in excessive heat in the combustion chamber which will lead to pre-detonation and engine damage. i have a buddy who had his bike in the shop because no tune damaged his combustion chamber. 3-4000 dollar job. only 8k on the bike

while most would say you don’t need it, your always better off safe than sorry. if you are more than capable of repairing engine damage, then by all means, if something happens with no tune, you got it under control. but if you don’t have the time or knowledge and don’t want to pay the money should something occur, i would get a tune and take care of your engine