2 piece downpipe/midpipe vs 1 piece

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Euphorism

Member

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2007 MS3

• Feb 8, 2009

• #1

just as the title says im curious if there are any upsides/downsides to a 2 vs 1 piece setup other that installation differences. most of the big name manufacturers do them each piece and then you will find around on the internet and on ebay stores that have a solid turbo to cat setup. are those junk? cpboost makes a nice looking one.. anybody have experience with them?

 

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MSMS3

Member

• Feb 11, 2009

• #2

Euphorism said:

just as the title says im curious if there are any upsides/downsides to a 2 vs 1 piece setup other that installation differences. most of the big name manufacturers do them each piece and then you will find around on the internet and on ebay stores that have a solid turbo to cat setup. are those junk? cpboost makes a nice looking one.. anybody have experience with them?

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There should be no performance difference in whether the combo is one piece or two pieces assuming you assemble it properly. There will be an easier install with the two piece system if you are doing it yourself. And since I wanted to add a reso in the RP section, the two piece system made the best sense.

 

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maestro

Member

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Mazdaspeed 3

• Feb 11, 2009

• #3

There seems to be only personal preference between the 1 and 2 piece set ups.

Search the thread and you will find a lot of folks using CP-E, Turbo XS, Corksport, Cobb et al. Most seem to be happy with their choice of the afore mentioned companies, which I might add, support this forum.

 

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bykeryder4life

Member

• Feb 11, 2009

• #4

1 piece has one less joint so thats one less place to have a possible leak.

 

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funksilver07

Member

:

2007 Sunlight Silver Mazdaspeed 3 GT

• Feb 15, 2009

• #5

bykeryder4life said:

1 piece has one less joint so thats one less place to have a possible leak.

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Absolutely, the 1 piece units are nice. That's not to say the 2 piece can't do just as well. If your doing a 2 piece system probably a good idea to keep the parts from the same manufacturer to insure the best fitment.

 

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954_ms3

Member

:

2008.5 metropolitan gray

• Feb 17, 2009

• #6

bykeryder4life said:

1 piece has one less joint so thats one less place to have a possible leak.

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thats about the only real upside i can think of to having a one piece. one thing one piece setups have that 2 piece's don't is a flex section. is that an advantage? not really but it's worth mentioning

 

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logik816

Member

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true red ms3

• Feb 17, 2009

• #7

also, the one piece can be offered catted or cat delete.

example: cpe offers both, cobb offers catted

as far as i know, two piece set up only offers straight 3 inch.

 

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PCspeed3

Member

:

Pearl White Speed 3

• Feb 17, 2009

• #8

catless downpipe is blasphemy

 

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bykeryder4life

Member

• Feb 17, 2009

• #9

cattless ftw I love my cpe cattless dp and how the car drives and how it smells. 18psi with a intake/DP/FMIC/bov -this car rips!