You can check the timing, but not sure how to reset it. Consult the TN link to the Camry on-line service manuals.

 

what you're most likely feeling on your top end is the engine being flooded- the 1mz runs really rich at higher rpms

as well, your knock sensors can be retarding the timing itself which also means flooding

 

I hate the huge power loss at high rpm's in the 1mz-fe. Im hoping an SAFC can lean it out a little.

 

I hate the huge power loss at high rpm's in the 1mz-fe. Im hoping an SAFC can lean it out a little.

I'd ask Tony the Tiger about that. I think Tony or Zoni would know the most about that.

 

I don't have the exact procedures (can't remember it on top of my head), but you'll need a Toyota "SST" timing gun for checking timing with the 1MZ's individual coil packs. I have a custom "jig" to set up my timing gun so it could pick up a signal after the coil packs when I check my timing (only because I am running a standalone ECU that I need to sync the base timing)

Base timing shouldn't be affected at all under any circumstances except for a malfunctioning crank angle sensor or ECU. You don't need to "adjust" anything for the 1MZ

If you are sensing that the engine is over retarded, it could be your knock sensors pulling the timing. Maybe put in higher grade fuel and see if the problem still exists. Or else, you'd probably have knock sensors that are getting too sensitive just from old age or wear and tear (common problem for the Gen3's). With retarded timing, the engine can't burn out all the fuel properly which causes a rich condition. Try to fix the timing/knock sensor problem first before deciding on getting an SAFC to lean out the engine.

 

also for a quick fix, pull the ecu fuse and leave it out for about 15 seconds and it will reset the ecu. my tranny had a slipping issue that would trigger the knock sensors to pull timing. every time i felt it starting to pull the timing i would just reset the ecu and it would go back to normal.