Can Ecu On Is220D Be Re-Mapped?

[Chris2011]

I've been through various listings and now I'm not 100% sure of myself!

Basically can the ECU as it is be re-mapped?

Several companies on Internet now say this can be done but got contradicting info when reading through other threads. One I spoke to said they use the dealer level Toyota tech stream. This means absolutely nothing to me!!!

Suffered with intermittent hesitation when wishing to gently accelerate. Had EGR valve cleaned and put DPF cleaner in fuel tank but every now and then I still get this niggly hesitation. Hoping a re-map might be able to solve this minor irritation.

[ChrisIS200SportTTE]

The ECU will still be mapped the same as when it left the Lexus factory therefore the slight hesitation your experiencing is not gonna be an ECU problem, something else is not right.

Maybe start with a throttle body clean and DPF clean (not using a bottle of cleaner, actually removing and cleaning it)

[Chris2011]

The reason I thought it maybe an ECU issue is because I can drive the car for weeks with no issue but on the occasions it's given me hesitation it seems as though the car is in a different engine mode. It's very subtle but you can just feel it running slightly different even from start up. It is also the only time it truly suffers from turbo lag.

Not sure if other people who have experienced the hesitation and turbo lag issue also noticed difference in engine characteristics.

However it will tend to drive like this for the journey after start up but when stopped and then re- started the next day for instance it will run correctly again!

Surely if throttle body, DPF etc are in need of a clean it would run poorly most of the time?

[alanuk]

Only option is it chipped.i have mines done.had it about 8 months now mpg good response good lag really improved.