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| Performance Chip/Module for Geo | |
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| Tweet Topic Started: Feb 25 2009, 05:09 PM (1,504 Views) | |
| snowfish | Feb 25 2009, 05:09 PM Post #1 |
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Basic GearHead
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I stumbled across this chip/module while surfing e-bay. http://cgi.ebay.com/ebaymotors/NEW-PERFORMANCE-CHIP-GEO-METRO-1990-1997-GAS-SAVER_W0QQitemZ270318681882QQihZ017QQcategoryZ33597QQssPageNameZWDVWQQrdZ1QQcmdZViewItem Claims to provide better power and efficiency/ecomony by "tweaking" the signals to the ECU. Has anybody had any real world experience with this? Then there's another guy that looks to have the same thing http://cgi.ebay.com/ebaymotors/BEST-PERFORMANCE-CHIP-GEO-METRO-1990-1997-FUEL-SAVER_W0QQitemZ220365551234QQihZ012QQcategoryZ33597QQssPageNameZWDVWQQrdZ1QQcmdZViewItem What gives? Are these for real? |
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| 2000Firefly1.3L | Feb 25 2009, 05:19 PM Post #2 |
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avoid it. it doesnt say what's inside the box, how it works and what it does and provides no real proof of it working on our cars. |
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| SeattleJeremy | Feb 25 2009, 06:24 PM Post #3 |
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Member
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This is known as the IAT Resistor Mod. http://www.60degreev6.com/content/IAT_Resistor_Mod
This "mod" does not work. Seriously, add 30HP to a 55hp engine? Not likely. |
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| z34-5speed | Feb 25 2009, 06:29 PM Post #4 |
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Formerly "Tech Certified"
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It is a joke. The same thing goes for the "turbonator" fuel line magnets, etc... BTW, are you on 60*v6? I've been on there for years with my Lumina Z34s. |
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| 2000Firefly1.3L | Feb 25 2009, 06:31 PM Post #5 |
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http://teamswift.net/viewtopic.php?p=309264#p309264 http://teamswift.net/viewtopic.php?p=206955#p206955 In the service manual says if the ECT is low, injection time for one ignition cycle is divided into two cycles and then extra fuel is added due to asynchronous injection - which gives the fuel injectors a longer pulse as well. My estimate is once the engine is warmed up, this turns off. If there was, say a switch installed to make ECT cold, the Powertrain Control Module (PCM) will give more fuel and an added amount of power on command - even if engine is warm. For 98-2001 metros i believe (4 cyl) . Also, if as well the Intake Air Temperature (IAT) was changed to always cold the PCM will adjust to an increased air density in the intake manifold, requiring additional fuel. So increased air+fuel = more power. So both of these sensors should be modified. Just was reading the description for IAT and ECT sensor and they are both thermistors (variable temperature resistor) . If both sensors have high resistance the voltage drop is high (less than 5 volts at PCM) . So, mod would be to take resistance of both sensors at cold, and find resistor with same value and wire in parallel to equal a voltage drop that is high to PCM which makes it easier to attach a switch to it. |
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| 2000Firefly1.3L | Feb 25 2009, 06:33 PM Post #6 |
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http://teamswift.net/viewtopic.php?p=308362#p308362
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| Johnny Mullet | Feb 25 2009, 08:12 PM Post #7 |
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Fear the Mullet
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A block heater is a lot cheaper and it actually does good for the engine instead of "fooling" it. My opinion. |
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| snowfish | Feb 25 2009, 09:03 PM Post #8 |
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Basic GearHead
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Thanks Guys. Kinda what I thought. These early 90’s Metro’s are pretty much tweaked to the max now for economy & performance. Somebody knows how to program the ECU, and associated sensors, to get 50mpg with 100hp+. But they’re either dead or driving a Hummer because they just don’t care. (shot or paid off) A $30 chip falls into the “too good to be true” category. Bummer. Though we had something here. |
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| Ghino | Feb 26 2009, 04:10 PM Post #9 |
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had my eye on the same object. only know from the galant club that you can never have more power and lower fuel costs. + chiptuning will not privide you much power without father changes. So for me wasnt it a serious product to buy |
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