The regulator needs to goto the boost side in the manifold the stock one rises 1 to 1 with boost just fine and the ecu is expecting it to rise

You also need a very solid bracket or it will vibrate and false trigger

No relief valve in a z154

You putting the valve back in that just let's it all bypass going through the filter haha

Most of the ls stuff we have on the dyno like 20-22 before you start gaining nothing buick 28ish

A6 turns the ecu on. You need constant battery to 2 of the power wires and A6 to switched power it must be a power that's on when ignition on and when cranking same with the relays for injectors and ignition or all the circuits will drop out when cranking

I wouldn't use the VE learn you will chase your tail better off just have a wideband attached for logging and a seperate narrowband for closed loop operation

Ls have efficient heads and run lower timing like ecotec

The battery voltage offsets in a maf tune are probably gonna be wrong in an 808 you have to factor in some ecu code related variance there's an I jectors flow testing thread by the_1 on here that will tell you how many ms needs taken into account

Only when cruising is that correct. full throttle will be in the mid 0.800 to 0.900 range