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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: fuel controller......CHEAP!
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Mon, 07 June 2004 15:17
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it doesn't have wideband O2 support. it has narrow band support and does closed loop.
it's US$140, OR is AUD$180 in one of our australian group buys (which i happen to host.. we are completing our fourth so far with over 60 MS's provided)
you can buy them from Glens Garage for US$140 +post.
yup, uses laptop. or Megaview 
the megasquirt has true datalogging capability, only limited by your laptops hardrive space.
TPS is not used for 'load sensing' for most factory cars. the load sensing comes from AFM or MAP sensors. the TPS only provides accel and decell info for enrichments, and also provides 'flood clear', turns O2 closed loop off at certain throttle position, etc etc
typically all you need to adjust to change the fuelling is the MAP/AFM response, since that is the primary factor in fueling.
using alterations in temp and O2 feedback is bogus.. keep it in the warmup stage, and the ECU will probably not enter closed loop. use O2 feedback to richen it up and it will go lean at WOT.
many pros and cons for 'fooling' a stock ECU (particular for stock motors ) but if you understand it, it does have a time and place.
as i said before, i think the best use for these 'signal modifiers' is when larger injectors are used (since this allows greater fuelling capacity) and you can use the device to reduce relative fuelling so that the rest of the table is ok...
you will need a dyno tune even moreso with these unless you know exactly how the stock ECU works.. woudl suck to have an unexpected leanout..
Cya, Stewart
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