70mm TB question

[2turboRX7]

When purchasing a 70mm Throttle body from a vendor, what additional parts are needed to install it? Will I need the IAC assy., TPS?

TIA

 

[mybuick]

the upper intake that the tb bolts to. hemco or champion makes this upper intake, or you can look in the for sale section to see if anybody is selling one for a 70mm tb.

 

[2turboRX7]

I have the new champion intake, but want to put a 70mm TB on it. Will I need parts off my old TB (TPS, IAC, throttle bracket, etc.)?

 

[mybuick]

yes you do

 

[soundguy]

yes, all parts are reused. new one is just housing and throttleplate.

One downside is more air gets into the intake than the computer thinks cause the opening is larger than stock. Mine seems to studder a bit at certain throttle positions. Has anyone found a way to counter this or can the chip be programmed to accomodate the change?