This is a near plug and play wire harness for both K20, K24 and K series variant's in your 2000-2005 Toyota MR2 Spyder for your K Swap. This K swap harness uses the Honda/Hondata ECU and does not require the use of the Factory MR2 ECU. This adapter does require the Acura RSX Type S engine and charge harness from the 2002-2004 model. This K series swap harness with provides OBDII functions as well. Installation instruction can be found in our download section.
As of 02-02-2021, our new Version 4 has new update's including wire changes to increase installation ease and reduce possible peripheral electrical issues. We are constantly evolving this harness to make it better
NOTE: Battery Light, Oil Pressure Light, and Water Temp will not function with this k swap harness. You will need our MIM to control those functions.
Pros: Functioning OBDII, turn key with modification to 2 wires
Cons: No A/C provisions, No adapter for Narrowband O2 sensor (require for emissions testing) The most basic version available
Pros: Functioning OBDII, turn key with modification to 2 wires, adapter for Narrowband O2 sensor (required for most emissions testing)
Cons: No A/C provisions
Pros: Functioning OBDII, turn key with modification to 2 wires, A/C Provisions, adapter for Narrowband O2 sensor.
Pros: Functioning OBDII, turn key with modification to 3 wires, A/C provisions
Cons: No Narrowband adapter for emissions.