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ok im upgrading my intake to a ffi. So I was wondering what throttle body to use? I wanted to go q45 but some say its too big. Is this a problem? My setup is going to be ffi 550's npr intercooler gt37 turbo 3in exaust greddy emanage and a maft. Do I have enough mods and power to warrent this tb? Any help would be great thanks.
 

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q54 for that little a turbo? If going with FFi. Go with a stang 5.0 87-93 tb. Available from 65mm all the way to a massive 105mm. Only issue with the q45 tb is it comes in ONE size and that is it. Once you go that way. You would need to cut the tb plate off and put ANOTHER ONE in if you want to upgrade or DOWNGRADE ;) Also keep in mind the modding of the Throttle position sensor regardless of TB if it is not OEM TB... :)

with that stang TB. All you need is one plate and you get lots of different sizes :)
 

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i just went with a stock jdm throttle body to keep it nice and simple
 

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jjh said:
ok im upgrading my intake to a ffi. So I was wondering what throttle body to use? I wanted to go q45 but some say its too big. Is this a problem? My setup is going to be ffi 550's npr intercooler gt37 turbo 3in exaust greddy emanage and a maft. Do I have enough mods and power to warrent this tb? Any help would be great thanks.

I'm going to use the 1uz tb on mine, the tps is the same as ours, and it's not as big as the q45.
 

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i have the 1UZ TB on my FFI, i think its the best choice for moderate power...
 

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jjh said:
what throttle body out of the 1uz by that i mean year the uz came in the is400 and sc400 correct
I think it also came in some of the LS models, not sure of years. Any 1uz tb should be the same, but check on Lextreme.com, you should be able to find out more info.

BTW, the 1uz tb is 70mm, iirc
 
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