Can a tune cause weird CEL's?

[sam hain]

Won't name tuner as I'm not here to bash I'm just trying to figure out what's going on with my truck. Before deleting, truck ran fine. After deleting the turbo started slinging oil down the exhaust. DTC's P2580 (turbo speed sensor), and P2228 (barometric pressure). These codes would not clear. I replaced the turbo and the speed sensor from a truck with 60k on it (stock 351 turbo). Truck is still throwing these above codes. Did some research on the P2228 code and found that it could be fixed by changing the fuse in #37 slot. Did that last night, code still won't clear. I'm just wondering if my stock file had something wrong and when the tunes were built off of it the bugs were put in my efi file??

I just bought a new MAF sensor because I found that it records barometric pressure. I'm hoping this fixes it, but I'm not holding my breathe.

[2007 5.9]

Early 07?

[sam hain]

No 2008

[2007 5.9]

Have you asked your tuner to switch base files? Is your tuner aware of your issues?

[sam hain]

He is aware of the issues, I emailed/called him several times. He keeps telling me to check connections going to turbo and air intake tube. Funny those were ok before the tune though. I asked him this morning to build me some different tunes from a clean stock file. Haven't heard from him though.

[2007 5.9]

AutoCal or V2?

If V2, I'd be willing to send you a deleted stock tune to see if it's truck or tune related.

[sam hain]

Thanks Les, but I've got an autocal.

[2007 5.9]

Ok hope you get it resolved

[Backhoe man]

Sounds like an OS problem I fought that forever, except for the turbo part I would assume that part failed. I had to try just about every OS I could find to this day my truck will only function on one OS properly. It took me forever to find it.

[sam hain]

Had dealer flash new OS to ecm and the turbo code went away. Think my tuner has this figured out now. Appears prev owner must have put a dpf tune on the truck or something.

[SixOhh]

i had a similar issue a few months back. made a small tune for a friend after he deleted his 6.7 there a lot of codes to get rid of after deleting a 6.7 it could be as simple as him forgetting to kill some of the codes. i made that mistake. nothing is hurt, its just a dead code. i would be spending money on parts for your truck that arent broken.

if it was fine before the delete/ tune then the tune needs to be fixed. plain and simple.

-Marcus

[sam hain]

After tuner built new tunes off the dealer base file the codes are gone.