Originally Posted by __jb

UpRev's Cipher product can change the idle. It's useful on G's and Z's that are FI, or have cams, or just idle too high or low.

http://uprev.com/products/cipher_NI.html

I think a UTEC can adjust the rev limit on a non-revup G or Z. I don't think the UTEC will change the RevUp's rev limit because it needs to stop the fuel and throttle body. I'm almost positive that UTEC's don't have the capability to manipulate the drive-by-wire throttle assembly.

You can flash the stock ECU. Actually, that's the only thing you would flash... technically, you also flash a stand-alone's EEPROM when you upgrade the firmware, but I don't think this is what the poster above means...

Originally Posted by Madelinot

Reviving this thread. Another related question: is it possible to retain the factory (ECU) rev limit when I use the open loop fueling and NOT have the UTEC control it? If so, how?

Thanks!

Originally Posted by Jime

Sure, just don't change the rev limit setting.