Originally Posted by sospan
Grumpy, I will search my records for the one I bought. You could also measure your current paper one and search the K&N website for their similar sized one.
When researching airflow I read Graham Bell’s book where he quotes tests on airflow and performance differences for different filters/ air supply enhancements. No HUGE improvements but cumulative benefits making up the differences he measured.
Some interesting results.


Thanks for that. I’m thinking about replacing the entire canister so maybe I just need to measure the flange? Read about some possible fuelling issues? Runs lean?


2012 Plus 4 in Sport Green. Much comfier than the Plus 8!