New Headers for my '04 S

[pacific986]

My appointment for the install has been delayed until next Tuesday. I'm glad to hear about the improvement in the sound. Any change in throttle response? Has your computer thrown a CEL at you yet? Did you disconnect your battery to reset you ECU after you installed the headers and before you initially drove the car with the new additions?

[Jaxonalden]

It's great to hear of good deals when you own cars like ours. I still haven't fixed my passenger side header yet. I've decided to just take it to a muffler shop and have them modify it to clear the coolant lines. I don't what to take a chance at not getting my ideas across on how to fix my problem back to China, and having it come back still not clearing.

[pacific986]

Let us know how it goes. My dad has a '99 tiptronic and if you get this thing sorted out, they will have at least one new customer.

[j.fro]

Hey Jaxonalden, as an alternative to altering the header, which may adversely affect flow, have you thought about rerouting the trans coolant lines? The stainless tubing available from race shops such as CDOC can work miracles.

[Jaxonalden]

Yo, yo, J.fro,

Yea, I thought about rerouting the line but if you look at the picture I took, the bottom rubber "T" is right in the way. I don't think it will be possible unless I cut the "T" and install a couple of 90 degree bends that will go between the header and the block (oil sump). Not to mention I'm now draining the coolant as well, and if you ever read the procedure on bleeding the coolant after draining...forget about it.

I think I have the tube problem worked out and I'm just waiting for HX Racing to get back in touch with me. I sent my condolences on the earthquake that hit the country, I don't think they were affected.

I'll keep updates as they happen.

[frederic]

Originally Posted by Jaxonalden

Yo, yo, J.fro,
Yea, I thought about rerouting the line but if you look at the picture I took, the bottom rubber "T" is right in the way. I don't think it will be possible unless I cut the "T" and install a couple of 90 degree bends that will go between the header and the block (oil sump). ....

Hello.
Just to let you know that I bought the same headers from eBay, and that I didn't have this issue with a 2.5l tiptronic... The 2.5 configuration got 2 cooling line, but one on each side of the oil pan. So if you have a ZF tiptronic transmission, I think that you could buy the cooling lines from a 2.5l and your problem will be gone...
BTW bleeding the cooling system is not that hard, I had to do it because of a broken header stud next to the water pump.
Good luck

[Jaxonalden]

Thanks for the heads up Frederic, I'll check it out. I checked a couple of distributors of headers and the majority said their set would not fit and a couple said "only on 2.5l cars". Now I know why, thank you.

[panameras]

Nice headers

Are you guys sure that they are from the same supplier as Maxspeed on ebay? I bought a set of these from them (maxspeed) for $574 over a year ago. If they are, then damn, you guys are getting a good deal! But either way I'm happy with the quality and performance and sound for the money I spent.

[panameras]

Originally Posted by panameras

Nice headers

Are you guys sure that they are from the same supplier as Maxspeed on ebay? I bought a set of these from them (maxspeed) for $574 over a year ago. If they are, then damn, you guys are getting a good deal! But either way I'm happy with the quality and performance and sound for the money I spent.

Here is the link to it http://cgi.ebay.com/ebaymotors/Porsche-Boxster-986-2-5L-2-7L-3-2L-Performance-HEADERS_W0QQcmdZViewItemQQ_trksidZp3286Q2em14Q2el1 318QQhashZitem220250203181QQitemZ220250203181

Surprisingly they are still priced the same considering others are selling for much less.

[Kevfra]

My headers have four bungs, so all four are plugged in.

So you say the first set adjust the mixture - makes sense. And the second set tests for cat performance...then what? Seeing the cats not perform well does it adjust the mix or simply throw a code? I would thik it does not make any correction in the burn, leaving this to the first O2 sensors.

I have not thrown a code and obviously my cats are not performing. Many others have done this and also not thrown a code. Perhaps the failure mode for the cats does not include a burn like mine, but rather some other mode of failure the system is looking for?

My engine is running warmer - slightly. And while it may be this is due to a lean mixture I have another thought...where is the temperature sending unit located? I suspect it is near one of the headers and is getting local influence from the heat of the header pipe, giving it a reading different than the actual coolant temperature. I have a laser temperature guage and could read my coolant directly, but since I didn't do that beforehand I wouldn't have any comparison to go by. If indeed the temp sender is near the header I can do a quickndirty shield to test my idea.