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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 06-22-2005, 01:02 AM   #41
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Quote:
Originally Posted by Merlin 91/97
What do you mean by "bar" and "2 bar"?
.... and where are the MAP sensors again? hehe
Bar is short for Barometric Pressure and is referenced at one atmosphere. So if static pressure is 14.7 psi, that is one Bar, then you could add 14.7 psi boost to make it two Bar. What this means is that anything over 14.7 psi boost is not something the PCM is capable of dealing with using conventional programming.

You might want to use another source to verify your boost. If you don't have another guage you can try this;

Calculating Boost(psi) using AutoTap.

1. In AutoTap measure Manifold Absolute Pressure (MAP)(in Hg) and Barometric Pressure(in Hg) and save the log.
2. Export your log from AutoTap to CSV format.
3. Open in MS Excel and setup a formula for Boost(psi):
(Absolute Pressure (MAP)(in Hg) - Barometric Pressure(in Hg))*.4911540775.

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Old 06-22-2005, 01:04 AM   #42
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Quote:
Originally Posted by Merlin 91/97
.... and where are the MAP sensors again? hehe
The MAP sensors are mounted on a bracket attached to the rear of the supercharger, just above the valve cover. They should have a white connector.

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