2007 Pcm Os
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Teching In
Joined: Aug 2005
Posts: 26
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2007 Pcm Os Is anyone familiar with the 2007 PCM. It looks different from the other previous year OS. I'm really confused, what happened to main VE table? I do not understand what's going on anymore. One more thing, what is up with 3rd gear in the C6? I don't know why I bought a 07. Anyone familiar with these new cars?
TECH Fanatic
Joined: Aug 2005
Posts: 1,691
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From: Sunny London, UK
E38 PCM 
No VE. Instead you have a forumla and coefficients and constants which feed into a simultaneous equation.
You need something like matlab to model it and feed your data in for SD tuning.
Or just calibrate the MAF and do the timing as usual.
Seems most are just using trial and error at present to map the VE to a best guess.
The answer of course is to use matlab solve the equation for each point in the ve table to generate the coefficients and constants. Probably helps to have a degree in pure maths for that one.
No VE. Instead you have a forumla and coefficients and constants which feed into a simultaneous equation.
You need something like matlab to model it and feed your data in for SD tuning.
Or just calibrate the MAF and do the timing as usual.
Seems most are just using trial and error at present to map the VE to a best guess.
The answer of course is to use matlab solve the equation for each point in the ve table to generate the coefficients and constants. Probably helps to have a degree in pure maths for that one.
Here's some info on how Speed Density works on the new E38/E67 computers http://www.hptuners.com/forum/showthread.php?t=8490
