I've been dealing with this motor for little while finally got it running and finally got the car drive able after fighting a map sensor. I bought the email tune and I'm gonna talk to the tuner tomorrow morning, but i just wanted some more opinions and just to gain some knowledge I guess.
The will randomly die after you let off the throttle and it idles for a sec. It'll go as low as 350 rpm at a stop sign. If its idling in the garage the lowest it'll go is 600. Both of which are concerning. I'd have to give it gas to keep it from dieing on me.
I don't think its related, but if it dies it won't start back up. I'll get a click and that's it. I have wrapped headers, heat wrap on the starter as well as a heat shield and heat wrap on the cable so I don't think its heat soak. After it sits for a few minutes it'll cough and almost sound like its spraying fuel out of the intake(i don't know how to explain it but it sounds moist), but it'll crank and cough and wont start back up until a few more tries. I do have cam pos code so I'm hoping thats it, but ive had multiple cam sensors in it and I've had some sort of cam sensor code for as long as I've had this motor.
Attached is the tune and two idle logs aswell as a running log where it died. The file name will tell you.
Specs-
99 5.3 LM7
Stock PCM
LS3 MAF/
BTR Stage 2 turbo cam-- 226/231 .605"/.598" 113+4
BTR .660 lift springs
LS7 Lifters
LS9 headgaskets
Fitech intake/ Fitech 3bar map
Thank you for your time!
-Jesse