Alright, finally put my smoke machine to the test tonight.
But first have to add, two weeks ago i had my buddy replace the injectors with rebuilt one off of ebay, the four hole style, and he also installed shorty headers.
Before the idle was below 1000, now she wants to idle above 1000 90% of the time now.

So hooked up the smoke machine and found three leaks.
Egr valve
Iac valve
Tps
The top bolt on the iac was loose so i fixed that one.

But what about the other two? The egr valve works, i used my mityvac on it and it opens and closes fine.
And the tps not sure, i took the tb off a bronco because it idled great, so i took it off and put it on my truck.

I also checked the vacuum at idle held steady at 19.

Anybody can help I sure would appreciate it.