As you all know, 06-09 CRFs can be a pain to start, my 09 is a bitch to start when cold, but once shes fired up, she runs very strong and starts 1st kick after when hot.. the problem is when shes cold. I have some tricks, but at the heat of the momment it still sucks and can take forever.. So I was reading, and people were sayin that installing the QS3 helped lots, and also improved performance eliminating bog, now that was all with WRs, KXs, but what about CRFs ? is it recommended ? Will it really help cold starting ? and nah, its definetely not jetting or valves or whathever..