Swapped out my tired 5.3 for a 6.0 with a cam and long tube headers. Idle issues

[Tiggerwelder]

I just installed a fresh 6.0 with a nice cam, as recommended here, and long tube headers. As I am very busy these days, I let a local shop to the R&R. After initial start up, I drove it home. It will barely idle. I updated the tune to the 6.0 displacement, and took the secondary O2 sensors out, but it is still weak and doesn't want to idle. I haven't put the Wide Band on it yet, but wanted to ask for ideas. I did a cold compression test, 150 on most cylinders. lowest was 145psi. Plugs all look very white. The 6.0 is 15% larger, should I just put 15% more fuel on it till I can hook up the Wide Band?

Thanks in advance for the help and ideas.

Mike

[5FDP]

15% is a lot of fuel, likely too much.

Would be easier to just plug in the 6.0 VE and start MAF/VE tuning from there.

[Tiggerwelder]

Thanks, I'll give that a try