ok one thing i need to finish my new monster is a throttle body i never used bigger then a itr,,but i have found a monster 68mm Tb for cheap im wondering if it could hurt my motor at all,meaning can it ever be to big?im shooting for 210Whp and yes i can portMatch the intakemanifold to the Tb no problem...but i want to know if it will hurt me at all if someone has some info

 

it will not hurt ur motor but u might see a drop in power

 

and gas mileage!

 

+1 for the drop in power...what it does is shift the power band higher than you will be using...basically like putting a victor x manifold on a stock b18b1 motor and hoping to see huge midrange improvements...not going to happen.

ITR throttle body is almost a perfect size for most na motors but if your shooting for that high a 65-68mm tapered throttle body will be good.

It will probably raise your hp but lower your peak tq

 

^makes alot of sense,,i guess i will just stop at 65mm

 

Maybe its just me but I don't see how a big T/Body can change the output of power negatively. An intake manifold can alter your power curve but not your T/B. Unless your current T/B is the bottle neck of your intake system it will have little effect. You will notice quicker throttle response due to more more air w/ less throttle. I would only recommend use the OEM T/B due to aftermarket ones sticking.

 

so you think it will be more to helping do to getting more air in,thats how i was thinking at first but for somereason was thinking it could choke my engine somehow i know it will all be tuned after its done

 

What intake manifold are you using? My guess is your setup will not out flow a 65mm t/body. However I dont fell you would loose power going bigger. Like I said most aftermarket t/bodies have sticking problems and make for an unfavorable ride.

 

The throttle body I would recommend is either a skunk2 66mm or the professional product 65mm ITR throttle body.

The professional products one is badass because it tapers from 68mm to 65mm and it's only like $150 bucks.

 

+1 on the sticking problems. and i say stick with your 65mm t/body. just me though.