How much did you have to open the airbox to go this large on jets? I have the Duncan fatboy duals and have removed the inlet snorkel. I have a twin-air filter on the way. The twin air may not flow much more than stock; I don't know yet, but it will allow me to at least keep a clean filter on hand by trading them out. Did you use the TPI slide valve or univents?

 

Anyone else out there gone bigger than 152/148?

 

See sig. I have 2 - 1" holes drilled into the top of my airbox. I also have the snorkel completely removed. My altitude is about 1500 ft. It runs a bit rich so I may add another hole or two.

 

I am running 155/160 with approx. 15 3/8 holes drilled along the bottom of the airbox. Stock exhaust. EPI pink spring. and this weekend I was out running piped banshee's and Piped raptors,HA HA HA HA HA! it was fun.



Bigger.

 

Brewster, or anyone else out there at around 1000ft.?