straight pipe

[Rebel]

i have a 1995 3.4l firebird and would like to replace my cat converter with a straight pipe since there are no emissions laws where i am. My question is what do i have to do before i do this or will i encounter any difficulties putting in the straight pipe?

[viper98885]

It will just take a little creativity with the piping such as reducers or enlargers if they are necessary. Beyond that, you should not have any problems.

[Rebel]

do i need an O2 sim? is it necessary? if i do, what will happen if i replace my cat converter wit a straight pipe and dont use an O2 sim?

[OneQuickV6]

Without an O2 sim, you will set off an SES light. It's easiest to do if you have a 3" catback (or 2.5" and such if that's what you are going to replace your cat with), otherwise, you have to get reducers which can be a pain and take more effort than it's worth.

[viper98885]

You should only have 2 oxygen sensors on that car. There will be one on each manifold. This being the case, you will not need O2 simms.