Accelerating / tuning

[nozza]

I have noticed that my elise S2 sport 135 seems to reach its maximum power lvls when my foot is about 50% pressed down on the pedal, if I press any harder it doesn't make any difference.

Are they all like that?

I also want to take my car to a rolling road, considering it a K series engine will any old rolling road guy be able to tune it, or will I have to send to to a specialist?

[tuscan_thunder]

Does the throttle buttefly open fully? You can check this by taking off the air intake and looking into the throttle body whilst someone presses the pedal. I wouldn't just pull the throttle cable at the body end as there may be something obstructing the cable so you'll not know if you just pull the cable.

Have you got a plastic throttle body? It might be warped. Metal ones are available from eliseparts.

[Phil-CH]

I have the same issue with my Exige S2. I haven't checked the wire yet, but while driving, it feels like full throttle without pressing the accelerator to the floor.