Update on downpipe development and O2 Sim:
Quote:
Originally Posted by Anthony@RissRacing
Hello everybody!
Ok so here is the progress through today. I will start with the 02 SIM. This is a decent amount of work. We are looking at both mechanical fixes as well as the SIM fix similar too the N54. To give you an idea of how we go about this...
On a stock car the signal varies between 0.X to 0.X volts. (replacing x with actual numbers for obvious reasons) However once the test pipes are installed the range increases too 0.X - o.X. This extra swing is what induces the catalyst inefficiency limp/code. The 02 SIM reduces the voltage swing back down to stock levels. Done by a voltage divider. (insight on explaining the issue from Shiv @ Vishnu)
THE VOLTAGE DIVIDER:
Basically a voltage divider is created by putting two electrical impedances in series or in our case resistors. It works by reducing voltage at a fixed %. By using Ohm's law we can determine the approximate % based on the resistors that we use.
Unlike BMW we are most likely not going to accomplish this through a pin out version. We will be taping the simulator wires. Where we have left off is we are getting readings from the OEM downpipe then after we finish our downpipe and run the testing we will be able to do the math to determine the fix 
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Originally Posted by Anthony@RissRacing
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