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Yes I had previously did the dod disabled before making changes

I figured. I'll do that today. I can't drive it cause it's running to rough. I'll get a base and upload it

I've recently completed the top end build for my 2009 Tahoe LTZ RWD. I'm in desperate need of a tune. I have mpv3 and the credits unlocked but I have little none experience. She's running like shit...

I've been researching and learning how to tune and have learned a great deal from everyone's help. Thank you all so much. I've followed the direction and advice for tuning the MAF. I just finished...

Thanks. Someone told me the exact opposite. That's why I posted separate

Thanks!

I'm looking for a wideband kit for my mpvi3 and wanted some feed back. What should I make sure I have and are they any top choice brands I should be looking into? What wideband 02 sensor kit do you...

I've watched ao many Gen 4 videos and I believe I have less button layout options than other GEN4 videos. Is there an advanced button option I'm not seeing or is my computer not the same. I have the...

I appreciate this so much!

I'm learning to tune with HP Tuners. I want to make sure I'm pulling the correct information from VCM Scanner. Should Gen 4 E38 VCM Scanner PID Channels be added and if so which ones? Will the...

I disabled the downstream dtcs codes

Thanks. I cleared the data yesterday and that's what came up. I thought the same thing but I read some ppl tune them further down the pipe. Also I added the file from vcm scanner, Idk it didn't load...

I ran the VCM scanner for dtc's and retrieved 5 codes.

ox7E8: PO171- System Too Lean (bank 1) (Pending, Current, Old, Histoy
ox7E8: PO174- System Too Leann(bank2) (Pending, Old)
ox7E8: PO420-...

Thanks everyone I figured it out. Thank god for these forums

I have a 2009 Tahoe LTZ 5.3 LY5. I've add 1-7/8 S/E headers, S/E racing y pipe with added 02s, COI Intake, summit coils and wires, plugs, Vapor canister, vaper vent valve, new vac system and new oem...