A Glimmer of Hope for Tuning? (Don't Hold Your Breath)
01-12-16, 06:11 AM
#106
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Viewing that car this Saturday so this news has come at a cracking time.
01-12-16, 08:00 AM
#108
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Location: Tennessee
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Not quite sure how the programming might change, however It would be nice to be able to keep the Comfortable Granny driving mode if only for rush hour driving. Id hate to rear-end someone because of a twitch. 
01-12-16, 11:37 AM
#111
Question:
Is there any concern of Lexus being able to login to your car through any available services (like other cars equipped with wifi hotspots, cellular services or Bluetooth) and possibly changing whatever turn you might do? There's already plenty of evidence of hackers being able to log into CAN bus systems for OBD systems that can control anything that's controlled by computers.
http://www.autosec.org/pubs/cars-usenixsec2011.pdf
So anyways, it may sound paranoid but it's highly unlikely mfg'er are not already aware and possibly exploiting vehicular controls to control warranty cost associated with "tuning" their cars. I'm new to Lexus but not new to vulnerabilities.
Is there any concern of Lexus being able to login to your car through any available services (like other cars equipped with wifi hotspots, cellular services or Bluetooth) and possibly changing whatever turn you might do? There's already plenty of evidence of hackers being able to log into CAN bus systems for OBD systems that can control anything that's controlled by computers.
http://www.autosec.org/pubs/cars-usenixsec2011.pdf
So anyways, it may sound paranoid but it's highly unlikely mfg'er are not already aware and possibly exploiting vehicular controls to control warranty cost associated with "tuning" their cars. I'm new to Lexus but not new to vulnerabilities.
01-12-16, 11:56 AM
#113
Here is my wish list:
At least 7200 RPM rev limiter
Better throttle response
400 WHP with flash and full exhaust (stock exhaust manifolds with both main cats)
420-430 WHP with flash and full header+exhaust. No cats. With O2 CEL eliminated without the need for (conditioners/simulators)
A Hondata reflash transformed my RSX Type S into a beast (relatively speaking) so I have high faith in a well tuned flash.
At least 7200 RPM rev limiter
Better throttle response
400 WHP with flash and full exhaust (stock exhaust manifolds with both main cats)
420-430 WHP with flash and full header+exhaust. No cats. With O2 CEL eliminated without the need for (conditioners/simulators)
A Hondata reflash transformed my RSX Type S into a beast (relatively speaking) so I have high faith in a well tuned flash.
Last edited by RSXiMUS; 01-12-16 at 04:09 PM.
01-12-16, 12:03 PM
#114
Question:
Is there any concern of Lexus being able to login to your car through any available services (like other cars equipped with wifi hotspots, cellular services or Bluetooth) and possibly changing whatever turn you might do? There's already plenty of evidence of hackers being able to log into CAN bus systems for OBD systems that can control anything that's controlled by computers.
http://www.autosec.org/pubs/cars-usenixsec2011.pdf
So anyways, it may sound paranoid but it's highly unlikely mfg'er are not already aware and possibly exploiting vehicular controls to control warranty cost associated with "tuning" their cars. I'm new to Lexus but not new to vulnerabilities.
Is there any concern of Lexus being able to login to your car through any available services (like other cars equipped with wifi hotspots, cellular services or Bluetooth) and possibly changing whatever turn you might do? There's already plenty of evidence of hackers being able to log into CAN bus systems for OBD systems that can control anything that's controlled by computers.
http://www.autosec.org/pubs/cars-usenixsec2011.pdf
So anyways, it may sound paranoid but it's highly unlikely mfg'er are not already aware and possibly exploiting vehicular controls to control warranty cost associated with "tuning" their cars. I'm new to Lexus but not new to vulnerabilities.
I know my 335i used to trip "tuner codes" when I had my JB4 tune, a BT cable was needed to erase it before going into the dealership. Then again they would only see it once the car is there and plugged into their computer, not wireless or anything....
01-12-16, 02:43 PM
#117
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01-12-16, 03:16 PM
#119
I don't think the ISF is advanced enough to receive over the air (OTA) updates nor does Lexus have the ability to "log in" to our cars wirelessly to see if we've been good or bad.
I know my 335i used to trip "tuner codes" when I had my JB4 tune, a BT cable was needed to erase it before going into the dealership. Then again they would only see it once the car is there and plugged into their computer, not wireless or anything....
I know my 335i used to trip "tuner codes" when I had my JB4 tune, a BT cable was needed to erase it before going into the dealership. Then again they would only see it once the car is there and plugged into their computer, not wireless or anything....
Thanks for the information. I don't know what's involved in "cracking" the computer and was just curious if the reason performance parts seem to take 500-1000 miles before it corrects itself and essentially detunes the car was, for some reason, due to Lexus parental controls (active or passive).
01-12-16, 04:33 PM
#120
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As long as the right tables and target values are changed in the ECU the car will not "detune" itself. The fact that this has happened up til now is because either the wrong tables have been changed or more likely nothing been changed at all....
To give an example, there are some trim values for air:fuel ratios which adjust slowly, over a period of time. Put a bolt-on intake part or headers onto the car and they might initially affect the AFR slightly which will give the appearance of more power, but if the target value of the AFR trim remains the same (typically very rich at WOT) the ECU will over time adjust its fuelling to try to reach that original AFR once again, and any power gains disappear...
To give an example, there are some trim values for air:fuel ratios which adjust slowly, over a period of time. Put a bolt-on intake part or headers onto the car and they might initially affect the AFR slightly which will give the appearance of more power, but if the target value of the AFR trim remains the same (typically very rich at WOT) the ECU will over time adjust its fuelling to try to reach that original AFR once again, and any power gains disappear...
Last edited by Sci; 01-12-16 at 04:43 PM.
