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Old 06-04-2010, 01:55 AM
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Dessertrunner Dessertrunner is offline
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Join Date: Jul 2005
Location: Griffith NSW
Posts: 2,156
Re: Memory dump of ECU

The following suggestion is one that comes from left field were the tooth fairy lives.

I am of the opinion/understanding that the current ECU in the SVX has no fuel map. What it does is experiment to find the right amount of fuel to inject for a give airflow through the MAF to acheive the disired AirFuel ratio. This then forms the learning refered to all the time. The timing has a map but is effected by the knock sensors in that if the fuel learning causes a problem that shows up in the engine knock sensors it pulls the timing to prevent damage.

If I am correct you should be able to get far more power from the standard ECU. You need to run tests to see what the full load limits are for the injectors (duty cycle) and Airflow(voltage max) and as each of these is reached replace them. It would also be able to cheat the standard ECU to increase the fuel injected by reconfigure the O2 sensor signal.

So there it is, a tooth fairy theory, what do you all think.
Tony
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1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX.
1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC)
1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car.
1995 - SVX Green low k mint condiation.
1995 - SVX Rally car, ex Matts car. Now to be used on track.
1992 - SVX red & Black being converted to Mid Engine.
1995 - SVX Red 143,000 bit rough.
Owned 5 others Subaru back to a 1974 1400 GSR.
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