The
idea is simple. At 68 degrees F, the air temp gauge reads about 2k
to 3k resistance. So we simply place a 2k to 3k resistor across the
ECU wires to fool the ECU. Pictured
is ST165 ECU E2
= White wire with black stripe THA
= Gray wire If
you have the ECU pinouts for ST185 that would be helpful. Basically
just look up in a manual the wires for THA and E2. Keep
in mind that in order to prevent the ECU from reading the air temp from
the actual sensor, you will need to cut the THA wire after the resistor
connection. Remember that cars have air temp sensors for a reason,
and doing this mod could cause poor operation especially in cold air
temperatures. This modification is best for warm climates or
situations such as track racing day where every edge is needed. This
mod will also work for any other toyota flapper style AFM. Such as
MR2 turbo and non, MK3 Supra non turbo, MK2 supra, Corolla, and Non turbo
Celica. |
