Pontiac G8 Forum banner

1 - 6 of 6 Posts

·
Registered
Joined
·
4 Posts
Discussion Starter #1
I just picked up some pacesetter longtube headers and in their description it says the cats will need to be moved and I was just wondering how far back do they push the cats ? Will the 02 sensors behind the catalytic converters need to be relocated as well?
 

·
Registered
Joined
·
383 Posts
When the cats are removed the Pacesetters will bolt up to the stock pipes. However, I had to trim almost 2" off of the passenger side collector to get them to connect to my Solo cat back exhaust, after I removed the cats.

JAM
 

·
Registered
Joined
·
383 Posts
Oh, and the 02 sensors behind the cats remained, although they had to be turned off in the tune to prevent the DIC "check engine" light.

JAM
 

·
Registered
Joined
·
4 Posts
Discussion Starter #4
How did you connect them might I ask? It says they're slip fit the last car I put headers on the headers came with the collector flanges attached
 

·
Registered
Joined
·
383 Posts
I've got a 2009.5 so the dipstick was a bitch. Tried bending the tube, f'd it up and had to plug the hole until the new one arrived. Installation required a spacer and a helper on top as I installed it under the car.

The steering linkage was not a problem - put a little grease on it and some kitchen plastic wrap on the header and it slipped right through without having to disconnect the steering or marking up the header. Some recommend removing the plugs prior to installation to prevent mishap - I didn't and luckily didn't nick any causing misfires.

You'll need on 02 extender for the driver side oxygen sensor - the wiring for that from Pacesetter was crap, as were the header gaskets - re-use your originals.

I had to get a pipe expander to enlarge these so the headers would slip fit them, then bolt up to the Solo cat back pipes For 2008-2009 Pontiac G8 Exhaust Pipe Pacesetter 43116DD 6.0L V8 GT | eBay. Luckily, they came with the headers at the time - overpriced IMO.

As I mentioned earlier, I had to trim about 2 inches from the passenger side collector for fit - they may fit better now, but I doubt it. Even so, the tips protruded almost 2" on each side at the rear, but I liked the look - a lot!

It's been quite a while since I installed them, I posted my experiences in other's threads at the time here or on the other site, so a search may reveal additional info that I may have forgotten. I was elated at the performance results then, and now - get compliments on how it sounds all of the time. The only post installation problem that I have experienced is the rusting and flaking of the coating on the bottom of the collectors, so look into putting something on them to attempt to address that.

Happy Wrenching,

JAM
 
1 - 6 of 6 Posts
Top