68mm Holley Throttle Body On B16 (si)

[imported_2ksi]

i installed this 68mm holley throttle body on my 00 civic si and it runs like crap, it idles high and it doesnt perform like i thought it would. I do have some mods to my engine like, b20,ctr cams,skunk 2 manifold fuel pressure reg. complete exhaust headers to muffler and now the holley throttle body any one have any suggestions on how to drop the idle, i tryed the tps sensor still no good, i droped it with the timing but it runs even worse im thinking of just putting my stock one back on and buying maybe a 65mm one

[Hybrid_Coupe]

umm yeah...68mm is way to big for your motor.. and ill even bet you dont have management to control all the extra air your getting. Why do you want a bigger throttle body, those are too big for your set up and your just going to lose power. Stick with a stock throttle body...type r or h22. Im running a type r and i make plenty of power on it.

[dubcac]

Definitely too big.

[NstyGrnHatch]

yeah dude, to use that t/b #1 you would have to have it matched to your intake mani. Second, if you dont have any modifications to your motor (ie cams, valve train, cam gears, etc) its pointless to use.

whats the biggest throttle body for hondas, like 70mm. I once seen a vielside 100mm throttle body for a supra, god it was sick.

[imported_2ksi]

what was i thinking, i guess i can go for a 62mm

[92DXHATCH]

60, 62 will do just plenty. 68 is too big, like bro said above, you'll need a fuel managment system to regulate your air intake and fuel intake. good luck bro

[b series us]

if it idle high u might have a vac leak or the idle screw is adj to far out...

[NstyGrnHatch]

this thread is old as dirt.