JDM 112MPH speed limiter??, Is This True? Options

[Supersprynt]

I just read that theres a 180KMH (112)MPH speed limiter on J-Spec engines? Can anybody confirm or deny this?

[neophile]

From what I've heard there is a 'gentlemens agreement' among japanese car manufacturers (and maybe the government) that they will not produce cars that can exceed 180km/h or are more powerful than around 204Kw.

This is why most japanese car speedos only go to 180Km/h, and the JDM versions of cars are rated at lower HP than say USDM or NZDM cars.

Interestingly the HP rating of powerful JDM cars (like the supra) never seem to exceed the 204ish Kw limit (360HP equiv ?) - even though dyno tests and aftermarket speedos paint a different picture (think skyline gtr)

Happily it seems this agreement may be broken in the near future (2005?) with many rumours of a number of manufacturers quietly working on new supercars (like the new supra, the return of the RX7, a revised NSX, the new skyline and a quicker 350Z). So far no one is saying anything - but that is to be expected when you're competing to make the fastest, most powerful or 'first to the market' supercar.