2006 Z06 w/Headers - 91 tune coding for cat

[Jason_NM]

I have a 2006 Z06 - added long tubes, no cats. Downloaded 91 tune on a U7194 and modified fan temps and COTS to off. downloaded no problem, car starts fine and seems to run well for approx 15 - 20 min. It then codes (eng light) and error codes for left and right cat ineficiency and starts running poorly. Any help? running ver 9r14 07-09 Truck/SUV 06-09 283425

[Jason_NM]

I have a 2006 Z06 - added long tubes, no cats. Downloaded 91 tune on a U7194 and modified fan temps and COTS to off. downloaded no problem, car starts fine and seems to run well for approx 15 - 20 min. It then codes (eng light) and error codes for left and right cat ineficiency and starts running poorly. Any help? running ver 9r14 07-09 Truck/SUV 06-09 283425

...additionally - I pulled my stereo fuse before the download as instructed to by the manual. After downloading and car reset the fuse was re-installed. My 6 cd changer nor radio work now. After a drive it appears my heads up display speedometer stays at 0 mph but the tach works. analog gauges work. The stereo does nothing - no indication of power at all....

[Jason_NM]

After researching on this site I decided to return the car to factory tune. pulled fuse on radio (even though its dead) and successfully put the original back. car starts and runs well no check engine lights. Road test - the HUD is working again - but the check engine light comes on after 15-20 min, as expected (no cats) and starts running crappy like before. I'm going to re-enter all the parms on the 91 tune + download.

[Jason_NM]

downloaded again and roadtested...exact same issue as before w/91 tune. Okay - It's time to wait + hear back from support...

[Jason_NM]

...put fuse back for radio - still nothing

[Jason_NM]

adding downloads of 91 tune and orig

[Mike_Levy]

Thats always going to happen. You're running no cats, which first off is not legal, and second is screwing with the computer. You need a custom tune done.

[Jason_NM]

Yea I know now...the HUD works w/original tune back in. Radio still dead. I sent an email to 06MonteSSabout the tune + these problems. He seems to handle the Vette issues

[mikel]

Try disconnecting the battery for a minute, Vettes can be a bit more sensitive to these types of issues after a flash.

[Jason_NM]

called tech support + sent email to [email protected] referencing these posts
waiting on response - thanks

[mikel]

called tech support + sent email to [email protected] referencing these posts
waiting on response - thanks

Try disconnecting the battery for a minute, Vettes can be a bit more sensitive to these types of issues after a flash.

huh?

[Jason_NM]

I'll try the reset on the battery - what is the fix for turning off the cats (COTS).
Thanks

[mikel]

Custom tune to diusable Cats, COT is disabling the cat over temp fueling.

[Jason_NM]

Okay - I sent my files in
whats the next step?

[Jason_NM]

Is this a simple quick change that you can provide? I planned on a custom tune after my cam change...but I had intened on installing the headers (done) + CAI before the cam. I had thought that the 91 tune would suffice (for headers + CAI) until the cam change.
Thanks