I tried to load the 87 tune today and then back to the performance tune and I had the same idle problem on my '03 5.3 Chevy.

I have a 2003 Chevy Silverado, 5.3, and the same U7195 I've had programmed on the truck since 2007. I was going to re-install the performance tune tonight and adjust everything like before and see if it would perform better but after doing that I'm having hell getting the idle adjusted back to ...

By the way, sickREDsierra, how do you like those Foose wheels? I bought a set of Nitrous 5s for my '67 Mustang and they look sweet. I really like your truck, no I haven't ridden in an 11 second new truck. The fastest I rode in was an '82 Chevy Shortwide with a 502 in it that ran in the 10.5s.

I adjusted the shift points up to 5900 and started getting some KR, and that was the only thing I adjusted earlier. I might back the timing down some and see if it goes away. I went ahead and rechecked my LTFT and adjusted it -3 on the Fuel Slope. After driving around a while, it still shows my ...

Thanks. I will try that this evening and tell you how it runs. The only mod I have done to the truck is a single flowmaster super 40, but it runs so strong I haven't considered anything more. It is the fastest stock 1500 I have ridden in to date. The 3.73 gears from the factory really help too ...

I bought the cable from Wal-Mart a couple of years ago, but I had my computer and cds stolen afterwards, so I am going to have to buy another cable. I actually think my truck is running better now than it had been before I unloaded the custom tune. I had been throwing SES codes every morning it was ...

I have a 2003 Chevy 1500 Z71 Regular Cab with a 5.3. I am using the Predator U7195. I loaded the Performance Tune and modified parameters based on what others have done on the forums. I advanced the timing 6% all the way around, removed the first two TM, quickened shifts 10%, firmed up shifts 7 ...

That didn't work because I didn't have custom tune or export tune under my options. However, I downloaded the instructions and got it loaded. Thanks for all the help. I'll definately be talking you up to all the guys on the fullsizechevy.com forums. This is the best customer service I've ever had ...

I was asking johan about setting the parameters since I've never done it before and he said if I e-mail him the stock tune he could do a custom tune for me. On fullsizechevy.com a guy posted instructions to load the tune on the computer. He said to

"Note: Before uploading the tune to PC the ...

I was just wondering if I have to set the truck back to the stock programming to save it to the diablo and then e-mail to diablosport to have a custom tune done? I just installed the performance tune and not sure whether to switch it back to stock and then save it or if there is a way to save the ...