Catalytic Converters...

[DiabloGT]

how many does the 95 z28 come with 1 or 2? about how much hp do you think ill get if i put this on, i know it might be hard to do but im willing to do it... http://www.rksport.com/product/p_01096552/view_detail
and also what if i dont have any cats, cause some of my friends say that when they check the emissions and stuff they dont bother to check your cats, is that true?
thanks

[Chevyracincamaro]

actually cats arent hard to put on at all, but im not sure when they went to two cats on the z28. i dont think that they had them in 95, but its possible, cant honestly remember...

[DiabloGT]

i think they do though cause on the item it says 93-95 so im supposing they had one to start with... well some of the people here said it might be hard, but i dont think i will need to use any more tools than the welder and some others...

[Chevyracincamaro]

ok that sounds right. they started using two cats after 95. i had remembered reading it somewhere and the year 95 was stuck in my head. couldnt remember if it was during 95 or after 95...

[DiabloGT]

ok thanks, but do you know anything about the emmision people never really checking if you have cats or not?

[Chevyracincamaro]

i dont want to speak about anywhere else, but where i come from all they do is check to see if the cat is physically on the car. they dont take apart the exhaust and look inside or anything, just take a quick look-see under the car to make sure the thing is there. the one thing that might be a problem is the mileage on your car, cause its technically a fellony to change your cat prior to 50K miles, so if your car has less than that and they see a brand new cat they might say something. i say all this in an area that doesnt have emissions so i dont know what they might do in a place that does have it. but i think you'll be aight...

[DiabloGT]

mine has 57k miles, and these 02 sensors i see http://www.rksport.com/browse/stf_s/c_268
u think when i change my 2 cats you think these sensors will add the hp or only add hp when you dont have cats?

[Chevyracincamaro]

i honestly have no clue. i had heard on the O2 simulators but never looked into what they were for or if they even worked. i gutted my cat on my 94 and the ecu has never thrown a code. i dont know about your car but my sensors are one wire hook-ups so i know those things wouldnt work on my car...

[Dober89]

One of the first parts of the emissions testing here is a visual inspection. If you have a big ass hole or something like that somewhere in your exhaust they arent going to bother testing it. I would imagine they would do this everywhere but I could be wrong.

[EcksZ28]

I'm pretty sure the first and only year they used dual cats is 1996. If I remember correctly, that's why 96s are rated at 285hp and all the other years are 275 (out of the 93-97 Z28s).

[DaMoNe6969]

Originally Posted by EcksZ28

I'm pretty sure the first and only year they used dual cats is 1996. If I remember correctly, that's why 96s are rated at 285hp and all the other years are 275 (out of the 93-97 Z28s).

My 91' Z had dual factory cats I think they had em' in 92 too

[EcksZ28]

Yeah, I was just speaking about the 93-97 Z28s though.

[DaMoNe6969]

oh my bad.. Guess I should read the WhOle post first eh?

[DiabloGT]

so are you sure mine has only one?? and i thought the 97 had 285 also...?

[EcksZ28]

No I'm not COMPLETELY POSITIVE, but I'm mostly sure.