Performance Exhaust and Header for Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners

racer_troy · 10-25-2006, 05:01 AM

OK...well...I've only a few minutes here so I'll be as brief and to the point as possible (which is sometimes difficult for me...)

The header install went well. As noted below, I've an o2 sensor issue to work out that is as of yet, unresolved. I will be reviewing the PET's once again and looking to see if any of the MY01 and later sensors have longer leads to allow plugging in pre and post primary cat. I'm scheduled to do this on Monday the 30th and then back on the dyno for the final numbers Nov 2.

So....having said that...I do have some informaiton from a baseline pull and Che's 2.7L header system.

Here's the baseline:

178.3bhp @ 6265rpm
157.8lbft @ 5178rpm

This shows appx 17.8% drive train loss assuming the car was producing all 217bhp as reported by the factory.

Che's headers:

184.6bhp @ 6386rpm or net +6.3bhp
155.4lbft @ 5700rpm or net -2.4lbft

This is not bad on the HP side and as expected with the torque. I've some theroies and more photos to share later.

Unfortunately, due to the o2 location issues on the MY00, we used some of our alotted time to problem solving and less evaluation. I'll try to get the full on test report soon.

Feel free to start the questions.

--troy

edevlin · 10-25-2006, 05:26 AM

Interesting numbers for the baseline pull on the 2.7L. Does anyone else have baseline dyno numbers for a 2.7L? I had some mods done on my 2000 Boxster before I found a dyno, so I lack a baseline (really kicking myself on that one).

I have been assuming a 15% loss in the powertrain. I believe the numbers racertroy got, but a 17.8% loss seems high to me. Any ideas why there would be that much drivetrain loss?

Ed

Gary Gaukler · 10-25-2006, 09:52 AM

Quote:

Originally Posted by edevlin

I have been assuming a 15% loss in the powertrain. I believe the numbers racertroy got, but a 17.8% loss seems high to me. Any ideas why there would be that much drivetrain loss?

Mustang dynos typically report lower numbers than, say, a dynojet.

racer_troy, do you have the full HP and torque vs rpm graphs?

racer_troy · 10-25-2006, 10:53 AM

Gary,

I wish I did as I was very very curious about the change in power curve.

This is all I was given.

--ts

unklekraker · 10-26-2006, 09:21 AM

Hi y'all! I'm about to purchase an exhaust from Che and would like to know if anyone here (from San Jose, CA.) knows or would recommend a shop that would install the exhaust i'm getting from Che...

I made a decision to get the exhaust to Che after spending a good an hour and a half reading the thread :dance:

Darin · 10-26-2006, 01:40 PM

I just wanted to let everyone know that I received my exhaust from Che today. He received my payment on Monday and shipped out the next day. Very quick response. Further, Che replied to my questions very quickly and kept me informed of my order. It certainly is comforting to know there are quality people to do business with.

The exhaust came well packaged and no damage. As noted earlier, Che even marked where the holes needed to be drilled on the mounting. Hopefully this weekend I will get it installed. I plan on making some before and after sound clips to share.

Darin

Go Cards!

Allen K. Littlefield · 11-29-2006, 12:02 PM

Does anybuddy have the savings in weight over the stock muffler from any of the various aftermarket offerings?

Allen NY

jeffsquire · 10-27-2006, 06:08 AM

Quote:

Originally Posted by unklekraker

Hi y'all! I'm about to purchase an exhaust from Che and would like to know if anyone here (from San Jose, CA.) knows or would recommend a shop that would install the exhaust i'm getting from Che...

I made a decision to get the exhaust to Che after spending a good an hour and a half reading the thread :dance:

_____________________________________

Unless he's made them recently, Che only makes these for 97-99 Boxsters.

unklekraker · 10-27-2006, 06:52 AM

Quote:

Originally Posted by jeffsquire

_____________________________________

Unless he's made them recently, Che only makes these for 97-99 Boxsters.

jeff...thanks for looking out, I do have MY 99

Travis · 10-27-2006, 07:03 AM

Quote:

Originally Posted by jeffsquire

_____________________________________

Unless he's made them recently, Che only makes these for 97-99 Boxsters.

Looking at eBay, it appears he does now:

http://cgi.ebay.com/ebaymotors/Porsche-Boxster-986-2-7L-3-2L-Exhaust-Header-Headers_W0QQcmdZViewItemQQcategoryZ33631QQihZ020QQ itemZ300040128008QQtcZphoto

http://cgi.ebay.com/ebaymotors/Porsche-Boxster-986-Boxster-S-Catback-Exhaust-System_W0QQcmdZViewItemQQcategoryZ33630QQihZ020QQi temZ300013131702QQtcZphoto