a1 ecu in a6 posted before but info i got was untrue. . .

[ChIoVnIdCa]

so i guess ill just put the ex one in and have the code o well.

[PRIMOCB7]

when i had the a6 many moons ago, i had to replace the O2 sensor. went to Honda and that was how i found out that the ex O2 sensor was a heated sensor. what that means, i don't really know but i know for a fact, it cost more, around $150 as opposed to $90.

[Granite CB7]

isn't there a difference between the dx/lx O2 sensor vs. the ex O2 sensor ??? the ex being a heated(4 wire) O2 sensor ???

Yes, the DX/LX (both f22a1) had the O2 sensor on the manifold itself. The EX (f22a6) had the O2 sensor on the downpipe by the oil pan/cat. The f22a4 (in 91 EX I believe) I'm not 100% sure about.

I think you're right about the heated O2 sensor on the EX's w/ f22a6.

Dan

[PRIMOCB7]

isn't there a difference between the dx/lx O2 sensor vs. the ex O2 sensor ??? the ex being a heated(4 wire) O2 sensor ???

[ChIoVnIdCa]

ok i went to the junkyard. ask to try a ecu and they let me. so i tried an lx ecu. and guess what no code. then i put my lx back and still no code. then ex goes in and theres the code. next ex goes in and the same code. so im so why would i change the sensor or wiring if i only get codes with certain ecus if i get a vaild code on the ex ecu the same should happen on the lx if they all are interchangable

[Maple50175]

todd if u need the downpipe for the EX i got one for you. I still have my downpipe with ex header ill sell you and ull be all set! let me know

[TheTempest]

I'm confused, or maybe not...so the PT6 doesn't have a govoner? What changes would you have to make to the car to remove the speed limiter entirely?

[ChIoVnIdCa]

okay i have two pt6s and one a1 ecu and they both do that. Its cel 41. And my lx ecu is the only one that dose not though the code. I have a a6 intake manifold. I am not looking for the performance I just want the speed limiter gone/raised without a cel.

[accordztech]

that shouldnt be true at all.

what code u throwing, 41? im throwing that right now but only with the new o2 sensor....the old one never threw it...

though when i swaped the ecu it was fine....

thats weird...wait for some more responses

[ChIoVnIdCa]

so I have a lx header and I get a cel when i put my a6 ecu(ex) in. its the o2 sensor code. so when i put my a1(lx) ecu in I dont get the code. So im guessing its because of the placement of the o2 sensor being the lx is higher up then the ex. so is there a way to run a a6 (ex) ecu with a a6(lx) header without it throwing codes. Reason is I dont like the speed limiter on the lx. (115)