Helping a friend with a Gen IV LS3 Connect and Cruise install on a 65 GTO.
Engine will fire and run about 2 seconds and die.
You can unplug the MAF sensor and it will crank and idle fine.
Have changed the MAF twice, last one was Delphi brand.
Using a Spectre brand 4 inch intake.
MAF is 10 inches from throttle body.
Was told by GM that the Spectre filter was causing an air Vortex and we needed to install an air straightener which we did with no change.
GM later suggested we use a GM stock filter which we tried with no change.
I do have some photos if I can figure out the upload procedure here.
Would appreciate any suggestions on a direction to take to figure out what is causing this.
thanks
Marshall