|
Tech Notes: |
|
Fine
Tuning For Maximum Performance |
|
|
Mass Air Flow Meter Adjustment: |
|
|
|
Adding an EFI Power Package
may require a slight adjustment to the Mass Air Flow Meter. The
stock Toyota computer is factory set to run lean while operating in the
mid range. When adding the EFI Power Package, the motor sees an
increase in airflow and may run leaner. Tightening up the Mass Air Flow
Meter will put the mixture back to the correct air/fuel ratio.
Do not make this adjustment on a "stock engine". |
|
|
- The Mass Air Sensor is found on top of
the air cleaner canister. The sensor has an aluminum housing with
a black plastic lid.
- Cut the silicone seal holding the black
plastic lid in place and remove the lid from the housing.
- Before adjusting, mark the original
location of the hold-down clamp on the gear wheel so you can return to
the stock setting if necessary.
- Loosen the clamp screw and rotate the
gear a few teeth as necessary - normally 3 to 5 teeth. Clockwise
to lean the mixture, counter-clockwise to make it richer.
- When replacing the top plastic lid, make
sure you establish a good silicone seal. Moisture can destroy the
sensor electronics.
|
|
NOTE: For additional information and an
illustrated diagram, refer to the Pro Fuel Injection section of Tech
Notes. |
|
|
Tuning MOD & Mixture Meter: |
|
|
|
The purpose of this kit is to
give you the ability to accurately richen up or lean down the air/fuel
ratio on your EFI equipped 22RE. The Pro Tuning Module allows the
air/fuel ratio to be adjusted while driving. The Cyberdyne Mixture
Meter lets you monitor the A/F ratio while you make adjustments. The
easy-to-read bar graph display and thorough installation instructions
makes this an excellent choice for the performance driven enthusiast. |
|
|
Pro Distributor: |
|
|
LC Engineering Pro Distributor provides an
increase in horsepower and acceleration due to the hotter ignition curve.
However, in order to achieve top performance, it is imperative that the
installation and timing be set correctly.
The Pro Distributors are set up with 20o @ 2000 rpm curve.
The best way to time these units is to find TDC on #1 piston and install
the distributor at 10o initial timing. You will then have
a total of 30o @ 2000 rpm.
Some users will like to advance or retard timing, as each motor is
different (i.e. compression ratio, head milling, etc.). But for the
most part, 30o-34o total advance @ 2000 rpm will be
sufficient for the 22R. Dyno results have shown that excessive
timing could damage your engine and decrease torque and overall horsepower so don't let it get out of hand. |
|
| Return to TECH NOTES Main Page |
| |