Anyone ever install Cats on their OBX headers?

[KILLSHOTS]

Originally Posted by Paul Workman

Suggest you use some of the saved $$$ to have it dyno tuned, asap.

You can have Marc Haibeck or Corry Henderson provide a pre-programmed chip that will get you in the ball park, and you can drive (read: HAMMER!) it immediately. Also, Marc programmed my fans to both come on at ~205º and turn off at ~ 200º, as well as adding anti-backfire fueling.

However, dynamic tuning, i.e., on a dynojet or whatever, is the best way to get the last few ponies out of your mods.

No question about this. Marc will add fuel so that you can take full advantage of the header swap, and the anti-backfire thing is an absolute MUST! Marc missed that in my initial tune (he fixed it for me immediately and at no charge, of course) and my Z backfired VIOLENTLY on every shift.

[Johnny5]

Okay, so I bought the Oil Dipstick from Paul, Header Gaskets from Jerry, Stage 8 bolts from Summit Racing, going to buy high temp copper Permatex from Autozone tomorrow....Now it is New OBX for $550 or used Watson headers for $700.

I have to find out which cats to buy and get them fabricated to slip one end on my 2.5 inch Corsa exhaust.

The last thing is whether or not i need an O2 extension and where to buy them. I bought new O2 sensors and see the 3 prong clip.

Do i defnitely need an extension and where would I find one for our cars?

[Ccmano]

Old thread here but it looks like the original question was never answered. What cats are other using with OBX headers.

I just installed an OBX system, headers and exhaust. I can’t stand the stink at idle, thinking about adding cats. I’m curious to see what other have installed.

Thanks
H

[Johnny5]

No cats will bolt right in. I bought magnaflows and has them welded to ibx bracket to bolt to catback exhaust

Cheaper than buying stainless works cats for $500