I have a 95 300ex with a supertrapp IDS-2 Exhaust, i'm running about 18 discs and i think i'll put my 130 main jet in and leave the needle where it is... what setups are you guys running? I also have a k&n, and bored .030 over.

 

2000 300ex with a FMF Powercore IV-2, K&N filter and jet kit, with an outerwear (airbox lid on). I went with the 128 (biggest in the kit i got), put on the new needle (on the same clip, 3rd??) they gave me and it runs good. Checked the plug and it looked good also. If I had a 130 I would probably put it in though.