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Boxster 2.7 and 3.2 exhaust swap?

babeins
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babeins Member

babeins

Posted
Posted

I've done some searches on the site to no avail.

My 2002 base boxster 2.7 has an exhaust rattle. I've tried everything I can think of and it appears to be internal to the cats on the headers. My question is does anybody know if an exhaust from a 2003 3.2L will fit my 2.7? What would need to be replaced if anything? can I keep the muffler and just change the cats / headers? Thx

ABE

PAULSPEED Member

PAULSPEED

Posted
Posted

Go to the part section and ask for the part numbers. If

the numbers are different, then the parts are different.

Paul

babeins Member

babeins

Posted
  • Author
Posted

i know the parts are different, i can look them up. I'm wondering if the different parts will fit.

Anybody know?

usaf-lt-g Member

usaf-lt-g

Posted
Posted
i know the parts are different, i can look them up. I'm wondering if the different parts will fit.

Anybody know?

Off the top of my hand, I believe the cats and O-2 Sensors are different. Simply swapping in a 3.2 Exhaust I don't believe will work. I "believe" (and I could be wrong) you'd have to also run new wires for new O-2 sensors. In addition, the MAF may need to be re-mapped as well as the ECU.

If I'm not mistaken. the 2.7 has 2 O-2 sensors, whereas the 3.2 has 4.

drem914 Member

drem914

Posted
Posted (edited)
i know the parts are different, i can look them up. I'm wondering if the different parts will fit.

Anybody know?

Off the top of my hand, I believe the cats and O-2 Sensors are different. Simply swapping in a 3.2 Exhaust I don't believe will work. I "believe" (and I could be wrong) you'd have to also run new wires for new O-2 sensors. In addition, the MAF may need to be re-mapped as well as the ECU.

If I'm not mistaken. the 2.7 has 2 O-2 sensors, whereas the 3.2 has 4.

The cats for a 2.7 and a 3.2 through MY 03 are the same. part numbers are the same. 4 sensors from year 2000 on.

The O2 sensors from 02 to 03 have different part numbers which probably means the length is different.

I just swapped a full system (less sensors) from a 2002 3.2 into my 2001 2.7 because my header/cats were rattling.

I still have the secondaries that are in good shape if anyone is interested in them.

I also live in CA with terrible smog testing, so I didn't want to have any problems from installing after-market headers or cat bypasses.

Edited by drem914

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