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69 Posts
Discussion Starter · #1 ·
Hi all,

Ive got a strange query. I changed the cat on my R25 a couple of weeks ago and ever since there has been a strange noise when accelerating! Its quite difficult to explain, its kind of like a crackling (like rice crispies!) and only happens when i put my foot down. It feels like it only happens when the tb is letting too much air in for the speed the engines going if that makes any sense?

Im going to check the air intake tomorrow but has anyone got any other ideas?

Could it just be particles from the old cat that has made their way into the back box?


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