Z06Luke
May 6th, 2016, 08:37 PM
Hello,
I have a 2004 Z06 (intake and TB are about the only unmodified parts left as far as airflow is concerned) I'm working on tuning. I noticed early on when i began using EFI Live that when I go WOT that the TPS momentarily shows 100%, but then settles back to 99.6% just a moment after that and stays there for the duration of the WOT session. Initially it bothered me, but I decided that it was miniscule.
Now that I'm putting the final touches on my VE table I'm finding that at 5600 RPM my data logs show that the manifold pressure consistently drops to 95kpa (I'm only a bit above sea level so prior to that point I see 100kpa at WOT). This seems to me that I am exceeding the airflow capacity of the LS6 intake manifold and/or throttle body. Before I go spending hard earned money on a Fast 102 intake manifold I would like to check and see how getting my throttle body opening 100% effects the symptom that I'm seeing.
Any guidance of how I might troubleshoot this?
I have a 2004 Z06 (intake and TB are about the only unmodified parts left as far as airflow is concerned) I'm working on tuning. I noticed early on when i began using EFI Live that when I go WOT that the TPS momentarily shows 100%, but then settles back to 99.6% just a moment after that and stays there for the duration of the WOT session. Initially it bothered me, but I decided that it was miniscule.
Now that I'm putting the final touches on my VE table I'm finding that at 5600 RPM my data logs show that the manifold pressure consistently drops to 95kpa (I'm only a bit above sea level so prior to that point I see 100kpa at WOT). This seems to me that I am exceeding the airflow capacity of the LS6 intake manifold and/or throttle body. Before I go spending hard earned money on a Fast 102 intake manifold I would like to check and see how getting my throttle body opening 100% effects the symptom that I'm seeing.
Any guidance of how I might troubleshoot this?