Hi guys I am new to the RSX and the forum I bought a used 04 Type S the the P.O., a shop, had replaced the motor and had a CEL they couldn’t read due to a Communication error with the ECU. The car Had 100k on it so I took a shot and bought it. Every light was on but the car actually ran well other than A bouncing Idle. I took it to an Acura Dealer and had them reprogram an 04 PCM. It fixed the lights but not the idle of course. I ordered an IACV and a TB gasket for an 04 (because I assumed it was replaced with the same year) I put it back together and the car would start, idle and die under any load. The car had a STFT of -27.3 a LTFT of -7.0 and ran pig rich. It threw a p0172 code. Since It ran well before I messsed with the throttle body. I ordered a new OEM map sensor for an 04 and a idle purge solenoid. When I went to put the solenoid on I noticed it was backwards. I then realized I had an 05-06 TB. I investigated further and noticed That the motor is a K20Z1 and the tranny is a X2M5 6 speed from an 04. What do I need to make the swap as right as I can? Do I need a 05-06 ECU? Do I need KPRO? I am guessing the wiring was changed as everything appears to match up. The car ran pretty well before I messsed with the throttle body. Thanks in advance. Pat
What an awesome discovery! hah. I mean, it does make 10hp more stock er something like that over a K20A2. But anyways...
Yes, the TB's are different from 02-04 to 05-06, in how they port the MAP pressure to the MAP sensor on the TB. I don't know your direct answer, but I think your options are as follows:
1.) Use an 02-04 TB
2.) Relocate the MAP sensor to the intake manifold?
3.) Mess with the port hole on the TB gasket (aftermarket phenolic one recommended)... in your case, plug it??
Got it running with a w 2005-2006 throttle body gasket
Thanks Iron Gumby. I put a 05-06 throttle body gasket in, cleaned and put the old IACV back on and it started running like it did before but with a smooth idle. It still running rich. Long term fuel trims are -18.3. Do you know if the EVAP systems are compatible? its an 02-04 ECU and canister etc. I am thinking of putting K-pro in and getting it tuned. I have a Thursday appt with a tuner in Sunbury. Thanks again, Pat
Sounds like it was only related to your IACV needing cleaned then. But the rich air/fuel ratio Idk... Maybe you have an 05-06 primary oxygen sensor installed when really it should still be an 02-04? Idk about the proper fuel trims or the EVAP systems but hopefully someone can chime in
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