wemay
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Member, JustinH commented...
Originally Posted by JustinH
There were some major changes with this ECU update, I would recommend it.
The throttle response has changed totally, especially light throttle. The sonata base is not a sports car, but the tune is dramatically better than the factory tune.
The best way I can explain it is the factory tune would lag when you would hit the gas, then rev high and not go anywhere.
With the re-calibration the car has no lag, actually somewhat fun to drive.
I bet they fattened up the mixture to keep the engine from pinging as well.
I wish I could find an article from a tuner to see what was actually done.
The true test will be next week when it gets a tank of 87 shell.
 I experienced the exact same thing with the Sportage 2.4L. When i went back to the dealer to purchase accessories i shared this info with the tech. he said that's normal, the Tech also told me not to worry if i wanted to still run 5W-20, it is perfectly fine and will cause no issues.I wonder if the oil pump change after the 2015 MY plus this ecu update are the reasons why.
How much can a tune actually change in this situation?
Originally Posted by JustinH
There were some major changes with this ECU update, I would recommend it.
The throttle response has changed totally, especially light throttle. The sonata base is not a sports car, but the tune is dramatically better than the factory tune.
The best way I can explain it is the factory tune would lag when you would hit the gas, then rev high and not go anywhere.
With the re-calibration the car has no lag, actually somewhat fun to drive.
I bet they fattened up the mixture to keep the engine from pinging as well.
I wish I could find an article from a tuner to see what was actually done.
The true test will be next week when it gets a tank of 87 shell.
 I experienced the exact same thing with the Sportage 2.4L. When i went back to the dealer to purchase accessories i shared this info with the tech. he said that's normal, the Tech also told me not to worry if i wanted to still run 5W-20, it is perfectly fine and will cause no issues.I wonder if the oil pump change after the 2015 MY plus this ecu update are the reasons why.
How much can a tune actually change in this situation?
