I wouldn't bother with any of the ebay junk supposed chips..
and this is just my experience..
But i have an ECU fitted that i got chipped by JET PERFORMANCE in california,
I'm running a TRD S/C @ 4psi, CAI, Ported TB, Headers & 3" Exhaust, i ran with the stock ecu to start with and found that my camry was running a little rough and rich,
after fitting the Chipped ECU i noticed a slight decrease in power on take-off but a huge increase over the rest of the power band, engine smoothed out especially noticed a better idle and better fuel consumption and i run only 98octane.http://www.jetchip.com/shop/shopdisplay ... =10&vall=1
i hunted on-line and managed to get it for about $300usd+shipping back and forth, about a total of say $500...
For me that's was 1/4 the cost of getting an aftermarket ecu programmed locally..
Oh and i've got a '01 Camry Touring V6 1mz-fe