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Yeah it has the 4x cam gear.

Well, I went ahead and did everything you guys recommended and I still had the issue. Pulled the engine removed the crank and found out my motor has a 24 tooth reluctor wheel. Didn?t even think of...

Once the car is started, it runs like a champ and hasn?t died on me, but yeah I will definitely check all the terminals and connection for the crank sensor tomorrow

I agree, I have checked 5volt, low reference and ground for the sensor. I will double check again. Also need to double check the pins are in the right location on the psi harness

I am not sure. Might have been something to do with the rpm issue?

Thank you. I am actually not the one who tuned the vehicle. Had it done at a shop, ended up borrowing hptuners to write the shops tune onto a new ecm. So I am pretty useless when it comes to doing...

Hey guys, been trying to figure out an extended crank, backfire, no tach issue for a while now and could use some help.
Some breakdown
Ls7 engine wet sump ls3 front cover, cammed (ls7s), longtubes...