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2000 ML430 SOLD, 2007 BMW 328i Coupe, 2014 BMW i3
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2,982 Posts
With many performance upgrades, remember two things:

1. If it seems too good to be true, it's all in your head.
2. If it seems too good to be true, it probably is.
 

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99 ML430 - 13 328i
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1,112 Posts
i wouldn't do it man, i think its not worth the risk. our cars have plenty of power man, no need for that
 

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190 Posts
Yeah these things are bad news. Believe it or not, most of these "Chip" mods are not a chip at all but a simple resistor. Sometimes the clowns go so far as to disguise the resistor in some sort of chip-like package. Here's the best part, you hand wire the thing into the harness that has as the Idle Air Temperature Sensor. So the resistor is basically fooling the ECU into thinking it needs to richen the fuel mixture and adjust timing. The power gains are negligible. And you do risk increased engine knocking, etc.

To conclude, the Chip-Mod should sit on the shelf next to the Electric Supercharger and the Fuel Line Magnet.
 

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11,243 Posts
If you're going to get one, spend the $$$ and get one from a reputable tuner.
 
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