[Hubes]

Does anyone know the manifold volume for an NPI manifold?

I'm working on a 97 mustang GT using HPtuners and I have what is supposedly stock files for a 2002 mustang GT and a 2011 crown vic. Both are PI engines and the mustang shows 9.63L and the crown vic shows 9.2L. I would think the NPI with its shorter runners should be less. The tune I read from my car, which is from an sct hanheld tuner has it set at 9.75L. I have a ZXA4.bin file (what my car has written on the ecu) I've been looking at with tunerpro, and it shows 129.59L, which sounds way out to lunch. Does anyone have a trustworthy number?

[JuiceSC]

Something is off with the TurnerPro nubmers. I would set it to 2x engine displacement and go from there.

[Hubes]

The tunerpro numbers are definitely out to lunch. 2x engine displacement lines up with the PI manifold on the crown vic, so it's probably pretty close. I'll start there unless someone has some stock numbers from an NPI car