backitoff

Guys I tried to replace my 02 sensor and it fell apart when I tried to undo it. Even heat has failed me this time! All I have is a stub of metal poking up.

I have now taken the cat off and have decided to replace it. Looking at the options,
should I go for a sports cat, or a decat, or a resonated decat? My car is a 1990 C2 manual.
Cheers

964Lovac

I have a cat bypass and love it. Highly recommend it for our cars!

Zingari

Decat sounds great especially with a G-Pipe.

There is a seller on eBay who has 964 stainless decat pipes for £75 if that helps. Note you will still need the o2 sensor so will need to buy a new one.

Had the same problem getting mine out from the standard cat.

roadiesean

So, heres a question, can someone explain to me exactly what a G-Pipe is, apparently I have one, it sounds delicious and the car runs very well. But what is it and what does it do ??

Vandit

964s have the heat exchangers (located under the motor), a catalytic converter (located behind the left rear wheel), a primary muffler canister (located behind the rear bumper), a secondary muffler canister (located behind the right rear wheel), and a tailpipe.

The G-pipe replaces the secondary muffler. If you look behind the left rear and you see a curved pipe leading to your exhaust tip, you have a G-pipe.

jevvy964

Perfect description!

roadiesean

Thanks Vandit. Appreciate it.

August West

Please do the Earth a favor and get the sport cat. Supposedly there's only a 2 horsepower difference and I'm pretty sure you wouldn't be able to tell the difference.

You might think your emissions are insignificant but the Earth is dying by 7 billion paper cuts and we all should be doing what we can to minimize our impact.

pcarplayer

In the first pic the secondary muffler at 9 is replaced with a g-pipe in the second pic. The pictured g-pipe is of the long type. A short version is also avail.

Zingari

^ That's a 'swan neck' G-Pipe and looks a work of art. Standard G-Pipe is a lot smaller (and cheaper)

roadiesean

That is bloody stunning !!!

Earlydays

Sound aside, the conventional wisdom is that the G-pipe gives you a little more low-end torque, while the Carrera Cup pipe (replaces the primary muffler) gives you more top-end power

964Lovac

I actually bought mine new off ebay for 100 USD... can't complain and have had it for over a year!

Jaye Bass

The Earth isn't dying....and there is a very good paper on the cooling of the deep oceans that has just come out.

I think you should sell your sports cars and ride a bike.

greg1990964

Hahahaha