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ok ive had my 05 vp swapped to an a2 for a few months now. (blocks cracked so im putting yet another a2 in!!) ive been running the original d17a1 exhaust with the swap tho. when im done putting this motor together and all done im having a shop make up a custom setup for me. i have an a2 stock exhaust manifold, 2.25" dwnpipe, high flow cat, magnaflow 2.25" resonator, and a 2.25" muffler all new that ill be using. i plan on converting it to ex exhaust setup but i saw something on a thread about if the ecu is from an 05 ex than you need wideband sensors.what sensors does an 05 vp have stock? i want to replace them anyway and i can handle lengthening the wires, but how do i know what sensors to use? its an 05 value package. ecu is from an ex. stock wiring harness(just ran wires for the vtec) dealer wants $400 a peice. any links or comments?

 
Rep Power: 366

just look for the price - the narrow band is much cheaper (got mine 50 a piece), the wideband is around 400 to 500? or was 250? Just hit any of the sites selling honda parts and search by year...
you in the internet anyways :P

 
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04+ have the wideband.

 
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just use the o2 sensors you have been using, unless ur swapping the ecu to one that needs the wideband signals then u gotta change to them.

 
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word. the primary sensor is contaminated so ill just replace it with original part n lengthen the wires for the secondary.

 
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is that for d17a1 and d17a2?

 
Rep Power: 312

From what I could find yess... Both went to wideband in 04.