Hondata

I have just got my FD2 tuned with dyno by an ECU tuner today. The dyno result was quite good and everything seemed to be fine. However, when we went for test drive, the max. throttle (%) shown on the computer can only attain 95% but not 100%, despite the gas pedal being fully pressed. The tuner claimed that the throttle shown on computer was 100% during tuning on dyno but somehow it became 95% when going test drive. And he told me that it doesn't really matter since I cannot feel the remaining 5% anyway.

My questions are:
1) How come the maximum throttle sensed by the computer was 95% instead of 100% despite a fully depressed gas pedal ?
2) How much does the 5% reduction affect the performance of my car ?
3) Is there any way I could correct the problem ?

Thank you very much.

Check the floor mat and make sure it's not bunched up under the pedal.

This is what the tuner asked me to do but there is indeed nothing blocking the way.
It's really strange....

Then perhaps he is mistaken about it reading 100% during tuning. The throttle plate maps are editable.

Oh no ... in that case, is it possible/easy for me to correct it myself ? I know nothing about ECU tuning .... Since I am from Hong Kong and the tuner has been back to Singapore, I cannot ask him to retune for me ...
Will you advise me to try modifying it myself ? If so, how shall I do it ?
Thank you so much.

If you do not know how to tune then you should contact your tuner for help with this, or just leave it as it is.

so I'd better not to try then. Thank you for your advice.
So how much does it affect the performance of the car indeed ? in my case where the ECU can only sense that 95% of accelerating pedal (throttle) is being pressed.

It is impossible to say without a dyno.

Thanks a lot. Cheers.

are you talking about throtle plate or throtle pedal?

is normal the T. pedal at 95%.you have to see the T. plate is 100% or more. If yes is all good.

Your calibration is probably locked by your tuner.
You cannot do anything but to wait for him to come back to Hong Kong.

U can always ask him to email u e calibration. He definitely has kept a copy in his lappy...

Sorry for the late reply.
My tuner asked me if I have pressed the throttle"pedal" fully, since the live time data on his laptop showed that I was pressing 95% throttle "pedal" only. I guess what the tuner meant was throttle pedal, not throttle plate.

Do you mean that the throttle pedal reading should show 95% despite the pedal was indeed pressed fully ?

thank you all very much for replying my messages.