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OK, agreed. But if the sensor data that the ECU is recording is what is changed, how is that recording going to show anything outside of normal parameters?

A piggy back device plugs in line with sensors and skews the data (voltages) going back to the ECU. The ECU sees these adjusted signals and then changes the way it controls the engine in response. In the case of the LAP3 Uncle Chip, once it achieves a certain voltage (boost) level, it starts...

If it did, that would negate the changes. That's the point of the box.

This ASSUMES that the boost signals are being manipulated in low throttle setting areas. That is generally not the case. I can't comment exactly to LAP3's map, but the bulk of the performance increase is at higher throttle settings, where boost is already supposed to be high and will already...

I leave the catch cans on when I take my car in for service. The mechanic showed the service writer the first time it came in, and I was called back to tell them what it was. I explained how it worked and they all agreed it was a good thing. Never an issue since.

Pros: Very easy 5 minute installation time. Removes just as easily and leaves no trace for the dealers to find. Good improvement in performance, even with marginal to no other supporting modifications (in my Optima, I had to change spark plugs and add catch cans - not required with the...

If you really want the results to be repeatable and consistent, you also need to log and monitor OBDII channels and try to start all dyno runs sequences at the same engine coolant temp and intake air temp. Turbo cars generate a ton of heat from run to run, and cars like these with air to air...

I have this same box in my Optima. It connects to the MAP and TIP sensors. It basically sends back a lower pressure reading from the sensors to the ECU, which causes the ECU to turn up the boost a bit higher using the wastegate control solenoid. As boost (and airflow) goes up, the full time...

Did you ever try the 7-5-5 setting for 91 octane? In my Optima 2.0T, it preferred this setting. I would get some rattle right at the shift from 2-3 consistently with the 6-6-6 setting. The LAP3 Uncle Chip plugs into the MAP (manifold absolute pressure) and TIP (throttle inlet pressure)...