So I've done some searching, but unfortunately have not found an answer that pertains to my problem.

Im in the process of planning a turbo kit, you know selecting all the parts etc. However, soon I will need an emissions test and since that I live in Ontario, Canada we do OBDII testing, as well as visual inspection (No sniffer.) Right now I have art pipes (essentially test pipes) and a Motordyne TDX2 exhaust system. From my understanding I will pass the OBDII portion but fail the inspection, since anyone that knows the slightest about cars can tell that I don't have Cats.

However on top of that, I soon will be installing a turbo once I save up enough money (you know how expensive these damn things are). Osiris running for the time being, until I go forged internals and up the boost. From what I have heard (in ontario at least) we can't have after market turbos installed, we need Cats and must have the stock ECU.

Anyone have a solution? I don't know anyone that can 'pass' me under the table and I'd rather not have to go find some to do so. Some feedback would be much appreciated!

Thanks

 

Use OEM cats and reflash the stock ecu done. Just won't make the most powa but will work! The older turbonetics as well as JWT and Greddy kits were all OBDII compatible from what i understand as they bolted to the OEM cats etc.. As long you don't throw codes on a reflashed ECU you should be fine. Use common sense such as coating all exposed piping to wrinkle black for visuals...

 

I know a couple of 240sx guys that found ways to fool the tests, it's not easy and I none of them are strictly legal, but you have to remember the techs don't always know what is stock and what's not.
Here's what I've seen before:

Keep stock cats and ecu on hand, swap out during inspection time. Lot of work to swap out every year.

A couple guys went pretty far with going for stealth looks like fabbing a manifold that was covered by stock heat shield, matte black or plastic piping to look stock, side mount IC, etc... Not an easy task and I doubt it would work well with the Z. You'd also need to keep the rest of the car as stock looking as possible for this to work well.

One guy gutted a cat, welded the outside to his test pipe, and it resembled a cat if you weren't looking closely.

Otherwise you need to find a mechanic that will overlook the mods one way or another. The ideal situation would be to become friends with a mechanic that you can trust.