Questions regarding twin 67mm and VMP elbow

[pickles]

Bought a VMP twinjet 67mm tb and high flow elbow used. The TB didn't come with the TPS installed, should I be able to just swap the tps from my twin 60 without any calibration issues?

I have the Roush blower so I know I "should" port the inlet. Can I safely do it with the blower on the car? Or should I remove it and take the rotors out?

And lastly, will this require a complete re-tune, or will it adjust on its own?

 

[4VFTW]

to do it right you're going to have to pull the blower off and remove the rotor pack. No retune should be required.

 

[Scott8583]

Just swap the tps from the stock Roush twin 60mm. No need to port match the blower case.
As far as re tune, I'm not sure on that. You'll have to ask your tuner.

 

[Scott8583]

Here's my old case, I don't believe it's been portmatched to the VMP elbow... It made 800whp like this.