I must say, your AFRs are way lower than all others ive seen on this platform? Not being critical, just curious. They all seem to hit the target AFR most of the time, were as in your tunes on both MT09 Euro 5's is way below continually?
Would you say, base on your experience with euro 5 yamaha's, that is safe to run the bike with no cat and no tune? Would it be worse if it where a euro 5+ model? Thank you in advance.
We would highly recommend getting a tune on Euro 5 bikes as it is due to how lean they are. Adding an exhaust will only make things worse so it is important to get a tune done as soon as you can after fitting the aftermarket exhaust.
