LY6 swap into E53 BMW X5 - tuning help needed

[GOFASTGUY]

I'm new to the forum and tuning so I need some helpful pointers on getting my engine and 4L80 transmission shifting properly. From the stock 6L I added an intake, fuel rail and injectors from a 2010 Camaro and Hooker short headers so my exhaust would clear the firewall. My exhaust is made up of a Magnaflow X muffler so it's pretty free flowing also and I left the cats out and post cat 02 sensors. From the tutorials I've found so far, the guy from Goat Rope garage is using a wideband to tune but is it really essential to tune my engine? I've heard otherwise so any help and or links to other tuning videos would be greatly appreciated!!

[RobZL1]

If you want to know what's going on outside of closed loop operation, then yes, a wideband is required. So, in short, once you floor it, you are flying blind (with respect to fueling) without a wideband.

[GOFASTGUY]

Thanks for your input. I appreciate any help I can get.

[GOFASTGUY]

Thanks for your input on this. I appreciate it. While putting this build together I deleted the post cat O2 sensors and the air conditioning but I still have codes popping up, where can I go in HP tuners to disable them to clear the codes?

[Jon S.]

The 2010 and newer GM ECMs utilize "permanent" DTC codes.

Depending on the reflash sequence in a conversion vehicle, if these codes appear, it may take a few drive cycles for them to go away - some may never go away - depending on the platform.

[GOFASTGUY]

Mine is an 08. Where in HP tuners can you disable A/C and the evap stuff?

[Jon S.]

You never posted a tune - sounds like you are working with an E38, with a 2008 calibration.

If so, all DTCs may be fully disabled with this platform - you just need to go through the DTCs from beginning to end, and disable what you don't need, with respect to your specific conversion project.

[GOFASTGUY]

That's where it gets tricky for me because I'm not totally sure what affect disabling something will have on another and the last thing I want to do is screw something up.

[Jon S.]

You have two options.

Option 1 - learn to use HP Tuners - through many hours of self education. In your current instance, you will need to look up the definition of any DTC, of which you are not certain.

Option 2 - hire a professional tuner.

[GOFASTGUY]

I think both options will have to be worked through and hopefully I'll learn a lot on the way. Thanks for the helpful tips.

[GOFASTGUY]

Through lots of reading and wiring diagrams I was able to fix the communication problem which also fixed my shifting issues. Now I'm hoping to find an OEM injector table for 2010 Camaro injectors