Ever since i installed my PCM i seem to keep throwing the Catalyst Efficiency Code. Someone told me i need an O2 sim but all i can find online is for 97-03. Does anyone with a 04 run one or are they availiable????
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Your sig is retarded! How many miles did you have when you purchased the car? Take that pulley off!
I think the code has to be deleted from the PCM. Either way it does not make any difference. You know what code it is and why its there.
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3.5" pulley, downpipe, colder plugs, 180 degree thermostat, intake, PCM...
That should net you good results with little to no Knock. Honestly, you're not far off and you might be fine with the 3.4. You just need to scan.
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The aftermarket pcms command the fans to turn on at a lower temp than a stock pcm. Keeping your car running a tad bit cooler. If you have a 180tstat it will be even better.
Honestly with the whole pulley thing its a crapshoot with the 04's. I have a 3.6pulley, powerlog,plugs,180tstat, 2.5 wbodydp,intake and ran both zzp and dhp pcms and still had 3-5KR. Then again my car is the devil!!! 666 are the last digits in my VIN. :lol: Either way Im trading this bad boy in next spring so I dont plan on dumping anymore money into it other than new struts and oil changes. Good luck
BTW the new car will either be a used (newer) TL-S or used (newer) G35s (sedan).
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The aftermarket pcms command the fans to turn on at a lower temp than a stock pcm. Keeping your car running a tad bit cooler. If you have a 180tstat it will be even better.
Honestly with the whole pulley thing its a crapshoot with the 04's. I have a 3.6pulley, powerlog,plugs,180tstat, 2.5 wbodydp,intake and ran both zzp and dhp pcms and still had 3-5KR. Then again my car is the devil!!! 666 are the last digits in my VIN. :lol: Either way Im trading this bad boy in next spring so I dont plan on dumping anymore money into it other than new struts and oil changes. Good luck
BTW the new car will either be a used (newer) TL-S or used (newer) G35s (sedan).
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