4" inlet on the turbo.
You get the full specs on the tank when you get the kit
, I'm more than happy to talk to you over E-Mail when your ready not a problem at all.
The rear tires are 255 wide good street tires, they do get pretty shredded in 2nd gear so I leave the traction control on to limit tire wear, 3rd gear now they are having a hard time also, but generally now I just leave the car in 4th gear (from 80kph to ~240kph)
it has more than enough torque *red spread of power* to pin you back at any revs/speed, using third to overtake is pointless as its over in less than 2 seconds and you are either about to fly off the highway! or literally drill into the back of another car
............
it's a great little car !!!!