exactly.5gencivic said:the point is that you'll be killing intake velocity by using such a large throttle body.
your motor will have a hard time out flowing a 62 or even 66mm throttle body.
my motor will be heavily modded when im finished with it, it already have all the peices just to pyut it together now, i have a d16y8 head and high compression zc pistons and port and polish head and a zex cam and an obx intake manifold, 7lb flywheel, stage 2 clutch, and 70mm throttle body which im contemplating putting on now so if i have every mod and zc pistons i still wouldnt be able to use this 70mm ? what kind of application is it for then turbo ? and how much do they sell for ? it came from gudeguest said:ok, are you guy's saying it's to big cause the motor isn't heavly moded or what cause i thought more air is good? if he did go with the 70mm tb he could port match the im and have his car run like a champ, air/fuel ratio might be lean, so look in to fuel mods, then he'd really run like a champ.