i just bought a 95 honda civic hatchback Si trim but for some reason has the d15z1 wich is vtec-e any way who ever swapped it was a total idiot for swaping the Si engine (125hp) or a complete smart *** (vtec-e gets like 50mpg) but besides the point it marks check engine and i got it checked and told me it is markind o2 sensor so i need a new o2 sensor wich is hella expensive for the vx model damn thing eats threw my gas like no tomorrow so wondering if anyone got one laying around or better yet i was looking onbuying a d16z6 so if u got any info let me knw