Advice on Y-pipe
05-03-2004, 05:44 AM
#1
Advice on Y-pipe My brother just hooked me up with a set of CNC ported exhaust manifolds, and I already have a cat-back, so I was considering adding an aftermarket Y. I have to keep my cats in to pass emissions here in VA, so would it be worth it to add a larger Y behind the cats? Thanks
05-03-2004, 08:26 AM
#2
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Two options. One, a Random Tech high-flow catted
Y (stock location, 3"). The RT cats have about half
the backpressure of stockers by my measurements.
The Y means little, relative to the cats. This is a
fairly pricey way to go, retail, but can be found used.
This is my setup-to-be, still decorating my living room.
Two, an offroad Y which you swap back off annually
for a couple of days. These go pretty cheap, like I
think I've seen 'em at or under a hundred bucks. The
cats are the expensive item, and there ain't none here.
You would need O2 sims or programming, sims are also
out there cheap as more people pick up tuning sftwr.
Y (stock location, 3"). The RT cats have about half
the backpressure of stockers by my measurements.
The Y means little, relative to the cats. This is a
fairly pricey way to go, retail, but can be found used.
This is my setup-to-be, still decorating my living room.
Two, an offroad Y which you swap back off annually
for a couple of days. These go pretty cheap, like I
think I've seen 'em at or under a hundred bucks. The
cats are the expensive item, and there ain't none here.
You would need O2 sims or programming, sims are also
out there cheap as more people pick up tuning sftwr.
05-03-2004, 08:15 PM
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Another thing you can do is go custom. A custom Y is easy to fabricate from a muff shop, maybe $150 at the most. From there Carsound cats flow damn good and cost < $100 for the pair. This will flow as good as anything that's for sale, and shouldn't hurt removability.
Decent fab pics here: http://community.webshots.com/album/70033608PfFoio
Decent fab pics here: http://community.webshots.com/album/70033608PfFoio
05-04-2004, 06:03 PM
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If the pipes are mandrel bent, there's no difference in pipes. As far as cats, Random and Carsound flow the best regardless of what pipe you put them on.
Where you will get the most variation is the collector. If you bring your muffler shop the magnaflow $40 collector and have them build it with high-flow cats, nothing is going to flow better, relatively speaking.
Where you will get the most variation is the collector. If you bring your muffler shop the magnaflow $40 collector and have them build it with high-flow cats, nothing is going to flow better, relatively speaking.