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Discussion Starter · #1 ·
Hi,

I've done a lot of research and I can't seem to find an answer to this. I have a 2021 bike (euro5 compliant) and I want to install an aftermarket exhaust on it which is only euro 4 compliant. But since there are no ECU flash options available yet (at least to my knowledge), I'm not sure if it will "hurt" the bike to put on the exhaust without a flash? It will probably run even leaner that it already is and maybe the engine won't get enough fuel?

I read that Wheel dyno works and FTECU cracked the new 07 ecu, but have any of you guys actually flashed the Euro5 models yet? 🤔
 
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