RPM drops

[Tsuchinoko]

Hello,

When at idle and I blip the throttle the rpm drops and then go for the correct value, if i press the throttle deep this issue doesn't happen. Does anyone have this same issue?

This starts a week ago or so..

Thanks

[Johnny_9]

Check for TPS voltage when TPS is closed. Should =0.5v

Post your map and log.

is your engine stock?

What is the IACV duty cycle?

[Tsuchinoko]

Yeah i'm thinking on the TPS too, later i will see the voltage.

Thanks for the reply.

[Johnny_9]

Tuning Issues

1)Also cud be a/f ratios, if u are using high-cams. a/f in the idle and off idle need to stoichiometric or slightly richer
2) ignition timing - see the help on the hondata site - advance timing as needed.
3) in the latest version of hondata u can set the fuel recovery rpm (overrun fuel resume) under Parameters>TPS
4) also increase the IACV duty cycle

Hardware Issues

If your car is stock and u r using stock maps, it likely to be a hardware issue (idle screw, TPSv, IACV, wiring). clean your IACV. does yr car have air-con? does the ACCL and stator spin with no drag? ACCL bearing OK? Old Car?

[Tsuchinoko]

Thanks you are really a helpful person.

But it was the TPS calibration. In my car it works ok if the reading is between -1.20 / 0 on 0%
and it was on the -2 range.

Now is ok unfortunately i think my TPS is not in very good shape, it changes a lot, is the way i release the pedal, if i release smoothly it reads 0 but if i release quick it may read ~-0,9%.
That's why i have some issues on idle.

Thanks once again ;)

Regards