Hey guys

Wondering if someone knows how to fix this issue?

93 chev 2500 350 tbi

Issue

The truck starts up fine and will rev to the red line no problem, if I drive it down the road it will do the samething.

The issues is once it warms up to temp it back fires and has a huge miss.the truck will idle no problem. It starts to cut out around 1500 rpm - 2000rpm.

It back fired so much it blew a hole in my muffler.

Here's what I have done

New fuel filter
New fuel pump
New temp sensor
New battery ( needed one anyways)

Checked the map sensor with a different one same issue


At this point I'm lost for what it could be

Thanks

 

I got it fixed it was the coil !