maranelloboy05

Any codes at all? Did you try a hard ECU reset?

Billman250

Rockin S2K

Thank you everyone for your input. Much appreciated and always impressed by the S2K community.

I called LHT Performance today and spoke with John who was awesome. Looks like the car will have to undergo lots of testing.

I went to the dealership who sold me the car and the tech disclosed to me today that when the car came to them, it had a test pipe on it.
They removed the test pipe and installed a catalytic convertor from NAPA. The tech expressed some concern that it might be a low-quality
cat because the dealership did not want to put an OEM one on. I told him my problems and we are riding on probably some false hope that
it might help if we replace it with a OEM one. He sourced one from a friend who is bringing in a few days for free.
He drove the car today was like "It is bad, it hesitates intermediately but on full throttle it is fine"

Rockin S2K

I have done the proper ECU reset procedure multiple times and does not help.

Chuck S

TB? Throttle body? Replacement? Cleaning?

-- Chuck

Slowcrash_101

It's either the pedal position sensor or the throttle body actuator itself.

jts09

If this hesitation is at low RPM, I saw a thread about it. I think that the solution was to replace the throttle position sensor. Only happens on the DBW cars ('06 and later).

jyeung528

seems unlikely to be the cat. you would most likely throw a code if there was an issue with the cat. but good luck.

rbtz

Have an 06, had this same problem. I fixed it by installing a new APP. Runs perfect now, zero hesitation.

Here's the part # I replaced: Part No.: 37971-PZX-003
Sensor Assy., Accelerator Pedal Position Sensor

fatjoe10

It would be nice to hook up a picoscope to the TPS signal and see the graph if it reveals any glitches.