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Anyone else having this issue where a certain angle, their 3d chart is disappearing?

91958

Another thing I was reading about and thought. What if it's my iat sensor getting heat soaked and causing it? I'm gonna check my datalogs and see what the IAT is. Then try to get it near that heat...

So I found this on FiTechEFI;

I can bare with the issue but it does get somewhat annoying. From what that says it could be either of the 2 or both. That it's pulling in too much air on hotstart...

It's strange. This issue... Lol. It always starts up instantly. Never any long cranks. As soon as it cranks it starts.

Well guys, I've logged a few starts if you guys would like to inspect a little bit and let me know what you find basing from my log(s).

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Cars' original tune when I pulled the first tune from my ECM was tuned to always run in open loop. (longtube, big cam combo) I have since set it to be able to achieve closed loop.

Here's the...

I really wish I knew who tuned this damn car when the cam was done. Im sort of determined to redo the whole tune. No wideband though so I can't really make a difference without that. In that writeup,...

messed with the frictional airflow initial and increased it by an additional 10% and lowered my cranking fuel by 25% from stock value. Its much closer to a solid hot start. Drove to the store and...

Just tried that tune I uploaded. Didnt fix. I did one last adjustment before saying im done for now. (car sits outside and its slowly beginning to rain) I decreased the cranking fuel again another...

So I decreased my cranking fuel in some areas where I know I have the problem for sure, in the time, not so much. Haven't really focused on the time of engine off yet.
Also increased frictional...

Hello!

I have a 2000 Z28 with a LS1/LS6 T56, with a cam (don't know which one installed by a previous owner), ported tb. When I bought it, it had longtubes and since then, went back to stock...