Dastek Unichip Version Q

[Chuckie]

Originally Posted by evo165

Do those Unichip able to over-write the engine ecu fuel map permanently?

In the past from what i heard is that after the tuning, you will be able to feel the gain on power and torque. After couple of weeks, the engine will re-learn and adjust the fuel map to over-write the Unichip map and therefore the power & torque will be back to square/stock one.

Is that true?

Thats kinda like a myth thats been proven wrong for years here. Its not too smart for a company to design a chip that will be simply overridden by AF sensors. What would be the point then for 225 USD chip?

[CTScott]

Originally Posted by Chuckie

Thats kinda like a myth thats been proven wrong for years here. Its not too smart for a company to design a chip that will be simply overridden by AF sensors. What would be the point then for 225 USD chip?

Your Asian market cars have different ECMs than the US market ones.

The US market ones aggressively maintain stoich (14.7 AFR) to comply with our emissions standards. There are many devices that can be purchased for $50 to $500 that promise power and economy gains, but all that I have seen tested have failed to deliver.

$225 would be far better spent on a used AEM F/IC, which at least has the ability to modify the output of the AFR sensor to fool the ECM into thinking that it is running at stoich, while the actual AFR is adjusted.

[Chuckie]

Originally Posted by CTScott

Your Asian market cars have different ECMs than the US market ones.

The US market ones aggressively maintain stoich (14.7 AFR) to comply with our emissions standards. There are many devices that can be purchased for $50 to $500 that promise power and economy gains, but all that I have seen tested have failed to deliver.

$225 would be far better spent on a used AEM F/IC, which at least has the ability to modify the output of the AFR sensor to fool the ECM into thinking that it is running at stoich, while the actual AFR is adjusted.

Oh I see../ Maybe the Dastek unit is capable of ' modifying the output of the AFR sensor '; or it may have some function built in that would achieve the same result. The shop that deals them here has been using them on everything from SUV's, pickups, European cars, Japanese cars, to Mustangs. They all maintain the tuned settings unless removed or retuned. Gains in power and mileage are retained.

[Chuckie]

^^^ Oh sorry, I forgot about the stock AFR setting you mentioned on U.S ECMs due to emission standards. That would make a difference. Unless there is a function in the Dastek unit to override even that if at all possible. The company stresses the fact that its a lot more than a chip; like an onboard computer or an ECM/ECU in itself in ways.

[Chuckie]

^^ Im pretty sure the Chevys and Fords being sold here are to U.S specs. (not 100% sure) - no problems retaining gains after tuning on them here.

I think one of the main problems of using this unit in the United States is finding a tuner as CaliYaris mentioned. Here, there is only one shop that is trained, capable and *licensed to do the Dastek units.