Can't comment on performance gains (I would imagine you would get some because at that point it is nearly a full exhaust system), but you will definitely need a re-tune.

 

Why not just cut that and the good ole' exup out at the same time? Not worth it if you don't plan on changing anything in your tune though. It won't run right unless you do a little fine tuning wither tuneboy or tuneecu. Yes, it will be a little louder, rev a little quicker.

 

I'm NOT getting rid of the exup too, just to clear that up.

I swear that wasn't originally there. Can't comment on gutting just the cat. I'm sure it would have some of the same effects as getting rid of all of it, just not as drastic. And still the potential for the P1080..

 

any thoughts on tuneboy vs pc3?

 

On this topic, has anyone on here used the HordPower 3-1 merge collector pipe?? This cuts out the cat and exup in one shot.

http://www.hordpower.com/index.php?main_page=product_info&cPath=46_47&products_id=339

 

It's nice but way overpriced. The Cone Engineering collector is a fraction of the price. Check my thread for pics.

 

Well, I looked at your thread and very good ideas and fab but its not my style. I like the undertail pipe WAY too much. :laugh: Not sure if you would know this but is the HordPower a simple "bolt-on" or does it require cutting like you performed?

 

Well, I looked at your thread and very good ideas and fab but its not my style. I like the undertail pipe WAY too much. :laugh: Not sure if you would know this but is the HordPower a simple "bolt-on" or does it require cutting like you performed?

You can use the Cone Engineering one for any style exhaust, I just chose to make a low mount. A few people on here have done undertails with that same collector. Hord's requires cutting as well. They are basically the same thing but Hord's is about 175 dollars more expensive and comes welded together, but it still needs to be welded on to your stock header. Cone also sells the stuff to make a turbo star for the inside of the collector and the tool to hold everything in place when its assembled. Don't think the Hord one comes with either. Here is a pic of what I am talking about, its the sharp point inside the collector:

 

Thanks KEGSdale, lots of good info. Unfortunately, I have no experience in welding so this does not look like a route I would go.

 

No problem! I need to buy a nice tig welder and start fabbing some shit up.:nod: