I have just noticed lately that when i let off the throttle in a lower gear or push the throttle it is rough/jerky. I am tuned on Crome and my car seemed to run alot better about a month ago. I have just noticed this lately. Its not extremely rough but it is annoying and its hard to drive smooth.

 

sounds like you might have a TPS going bad on you, or possibly out of adjustment.

 

How do you calibrate it?

 

U need a voltmeter/dataloging equipment. Then set it to .5 volts when fully closed. That will only work if you already replaced the tps screws, so that you can loosen & move it.

Also. I dont know about chrome but I do know that s300 (hondata) has the ability to calibrate it through the ecu. Might wanna research that some.