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Location:
Sydney
Registered:
July 2002
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Re: Fuel and ignition map for 20V
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Sat, 02 November 2002 09:08
 
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heheh ive got to get it in first 
the 20V is on an engine stand at the moment.. ive got to sell my sprinter so ive got the dollars for the 20v exhaust.
yeah you will find the throttle bodies of any EFI car are usually oversized somewhat.. the microtech TPS map only goes to 65%.. so I guess after the butterfly is 60% or so open it dosent make any difference opening it further.
As for idle problems.. its hard to get any engine with an aftermarket computer to idle properly if it doesnt have closed loop idle control.
If you use a map sensor it is more forgiving to load changes.. and you can use a idle-up solonoid to let some more air around the bypass.. you wire it up to open when the thermo comes on.. that way it will also work for the A/C (as the fan runs all the time when the A/C compressor runs)\
If you use an idle-up solonoid by itself with TPS control, when it opens it will just lean it out slightly.. which wont usually result in increasing the idle.
So to get around this you also put a resistor across the TPS sensor that "fools" the computer into thinking the throttle is slightly open.. thus increasing the fuel as well.
(The TPS is just a variable resistor).
I havent done any calculations to work out what size resistor to use but it woudlnt be that hard to work out if need be.
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| | Subject | Poster | Date |
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Fuel and ignition map for 20V
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AbaddonGZE | Thu, 31 October 2002 00:50 |
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Re: Fuel and ignition map for 20V
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gt20v | Thu, 31 October 2002 15:58 |
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Re: Fuel and ignition map for 20V
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AbaddonGZE | Fri, 01 November 2002 01:17 |
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Re: Fuel and ignition map for 20V
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gt20v | Fri, 01 November 2002 13:23 |
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Re: Fuel and ignition map for 20V
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gt20v | Fri, 01 November 2002 13:26 |
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Re: Fuel and ignition map for 20V
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AbaddonGZE | Sat, 02 November 2002 01:12 |
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Re: Fuel and ignition map for 20V
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gt20v | Sat, 02 November 2002 07:57 |
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Re: Fuel and ignition map for 20V
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AbaddonGZE | Sat, 02 November 2002 09:08 |
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Re: Fuel and ignition map for 20V
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gt20v | Sat, 02 November 2002 14:08 |
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Re: Fuel and ignition map for 20V
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AbaddonGZE | Sun, 03 November 2002 03:12 |
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Re: Fuel and ignition map for 20V
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gt20v | Mon, 04 November 2002 14:46 |
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Re: Fuel and ignition map for 20V
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AbaddonGZE | Mon, 04 November 2002 23:17 |
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Re: Fuel and ignition map for 20V
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gt20v | Tue, 05 November 2002 09:47 |
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Re: Fuel and ignition map for 20V
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AbaddonGZE | Tue, 05 November 2002 10:17 |
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Re: Fuel and ignition map for 20V
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gt20v | Tue, 05 November 2002 12:53 |
