hey you guys i was wondering what will get better performance....im currently running 12:5:1 compression on my b20vtec n/a w/ skunk2 pro-series 1+ cams..w/ the skunk2 pro-series intake mani. I want to know if i'll lose power switching over to 42 mm itb's or is that too small? what size mm would you recommend? any info would help thanks!

 

im wondering the same thing, i have a skunk2 manifold but want to do GSX itb's

bump

 

I have used some TWM itb's before on a set up like your's. We end'ed up useing 50mm and they worked great. I think the 42mm would be good for a sohc. If you guy's need any tech info on TWM product call number in my sig and I can help you out. check there product out http://www.twminduction.com if your going to go with a set of itb's these are the one's to get. Highend autosports
Mike