Hi everyone,
I’m looking to flash my bike using the Woolich Racing kit and I currently have a Yoshimura R77 exhaust system installed.
Before I pull the trigger, I wanted to check if anyone here is running this exact setup?
How is the throttle response and overall performance?
Any specific recommendations or "dos and don'ts" when flashing with this exhaust?
Are there any known issues or map adjustments I should be aware of?
Would love to hear any pros, cons, or general tips you guys might have.
Thanks in advance!

If it's slipons, the tune should be closer to the stock fueling than a full system. Even so, with the tightening environmental regulations, the stock fueling might be a lot leaner than if was with the Gen1.

Actually, I have a full system installed. Given that, do you think it's running too lean now?

I wouldn't run it at high rpm on a full system. There was a day with the Gen1 when you could do whatever you want with exhaust because the whole stock map was rich. I would think leaning the fueling back would be the simplest way to meet environmental regulations. The stock fuel mapping might be very lean. This shouldn't be a real issue unless you run the engine at high rpm. I hae a friend who owns the same bike I own, a 2024 ZX-14R. He's ridden it 2 years with slipons and no problem but I think he avoids the upper revs.

I'm not familiar with the Woolich race kit. Is it an auto tuner....you do a run and the Woolich system records fuel trims? I've done that via Dynojet. it works....just you need to go insanely fast for huge amounts of road if you want to tune the lower throttle positions.