I was going to get a y-pipe and thought that either the cali or fed spec would fit. So i was going to buy the Fed spec. Then Budget asked me which kind of factory y-pipe i had on there now. I guess the 99's are specific to one or the other? How can i tell which one will fit my car?

 

if you have 4 o2 sensors then you are cali and 3 if you are federal spec. just look under the hood right in front of the motor.

 

OK, thanks......

Aren't the Cali spec y-pipe's more restrictive than Fed spec?

 

I just went out and looked inder my hood. I see 3 "plugs" in between the motor and the cover that goes over the spark plugs.....are those my o2 sensors?. They are plugs w/ green release buttons and red/purple wires running in the backs of them...........

If so looks like its Fed spec, Thanks

 

sounds like you are fed spec to me. now you can get rid of 2 precats with your y pipe instead of one like my cali spec. edit- i just saw your post above but my statement above should answer it.

 

OK- i just figured out that i wasn't looking at the 02 sensors. Aparently i was just looking @ some plugs? Do i need to remove a panal or something to see the 02 sensors????

 

Raise your hood. Look for a shiny metal identification tag fastened to the passenger side of firewall. The top row is the Vehicle Identification Number, starting with J. The second row is model information. The first five characters are BLHUL. The 12th character is the destination:

N = Canada
V = California
U = US, not California


Credit: Daniel B. Martin

 

yes there should be 3 plugs on the front of the motor between the motor and the radiator but if you do have 4 you will also have another one on top of the motor on the passenger side .. just check that sticker on the hood it will most likely tell you if your fed or cali

 

Ok- i checked the 1`2th character, Thanks.....


BTW its a Fed spec-time to get y-pipe