Quick question guys.... I have a '03 Z with Vortech and Utec. Now I want to raise my idle to 900. A local shop has Cipher that is willing to help me out. But like many other FI guys I keep getting the P0300 code for multiple cylinder misfires. I have been clearing them via the pedal method and a handheld OBDII device. Since these are clearing the ECU.. would these undo the new idle flash? Thanks for the help!

 

No.

Now you do know you can turn of that P0300 code in Osiris right?

 

I do now!

 

misfire is a continuous monitor. There is no reason to shut it off. If you are really misfiring you want to know.

esp with a vortech, it is not normal to get 0300 often on a properly tuned vehicle

 

If they only raised the idle using cipher (not a true osiris flash) and depending on how you scan tool clears codes then yes you might lose the 900 rpms for idle. Plus i believe they can only raise it 200 rpm and stock is 650 so you might not get 900.

I have done a few osiris/utec tunes and they come out really good using the osiris trimmed in below boost and the utec in boost... Might just wanna get a nice trimmed in tune, disable any codes you need and you would be set.