Hey HT,

I have a question regarding what size throttle body I should get for my set up as I'm torn between 66 or 68mm for my B18c1. I'm going to be keeping the block stock for now so I wanted to do the following:

Skunk 2 Tuner 1 Cams (w/ Supertech valvetrain)
Skunk 2 Adjustable Cam Gears
King Ported Edelbrock Performer X Manifold
AEM SRI with BPi 3" Filtered v-stack
PLM Tri-Y Long Tube Header
Vibrant Ultra quiet resonator (2.5")
2.5" Mandrel bent piping to 2.5" Vibrant Flat Black Muffler
Tuned on Hondata S300

I was originally planning on going with the 68mm TB and port matching the manifold. I wanted to do this so that when I go higher compression I can still utilize the same throttle body (to avoid buying parts twice really) and maximize the gains from it. I'm just a little concerned that 68mm may be a bit overkill for the stock GSR compression, what do you guys think?

 

68mm will be fine.

 

Great, thanks !

 

a 68mm tb is a good match for your build and goals.

 

Thanks, just trying to avoid lego building s*** haha.