New Headers for my '04 S

[tholyoak]

Unless he does something else, DME reprogramming etc, he is definitely going to have a CEL. No primary cats = CEL for catalytic efficiency.

-Todd

[Wingnut2u]

In searching Ebay it sure seems like Surewin, Deluboz, Maxspeed, Exhaustcn(HX Racing), and 425450 are all purchasing their headers from the same supplier. Since Deluboz is a trusted sponsor and seller here and on ebay, then I would trust the headers from Surewin (if they truly are the same) are quality as well but let us know what you think after you get them installed, my guess is that you will get the dreaded CEL light

[Adam]

Originally Posted by Wingnut2u

let us know what you think after you get them installed, my guess is that you will get the dreaded CEL light

I overheard the perfect solution for CEL issues the other day. Take a piece of black electrical tape and cut it into a small circle the size of a dime. Then stick it over the CEL. Whalla! No more CEL

[fu03steve]

Originally Posted by Adam

I overheard the perfect solution for CEL issues the other day. Take a piece of black electrical tape and cut it into a small circle the size of a dime. Then stick it over the CEL. Whalla! No more CEL

i have a way better solution... take off the gauge cluster and remove the CEL bulb
wah la!!! no CEL forever and ever

[Jaxonalden]

I read an old post from CJ Boxster and in it he had a IPB (illustrated parts breakdown) of my exhaust system. The picture showed a place for an O2 sensor aft of the secondary cat. If its there and I plug my O2 sensor to that I should be able to operate without getting a CEL, right?

The picture of the exhaust system in post 254 on the Thread called "Performance Exhaust and Header for Boxster".

[fu03steve]

Originally Posted by Jaxonalden

I read an old post from CJ Boxster and in it he had a IPB (illustrated parts breakdown) of my exhaust system. The picture showed a place for an O2 sensor aft of the secondary cat. If its there and I plug my O2 sensor to that I should be able to operate without getting a CEL, right?

The picture of the exhaust system in post 254 on the Thread called "Performance Exhaust and Header for Boxster".

i dont have to worry about that... cuz i have a 2.7

ummm im not exactly sure what will the computer sense or detect...
because after eliminating your secondary cat the air flow increases and
the chemical fumes changes so im not sure what it will do...

my mitsubishi is easy... i replaced everything straight pipe
no worry

[Adam]

Originally Posted by Jaxonalden

I read an old post from CJ Boxster and in it he had a IPB (illustrated parts breakdown) of my exhaust system. The picture showed a place for an O2 sensor aft of the secondary cat. If its there and I plug my O2 sensor to that I should be able to operate without getting a CEL, right?

The picture of the exhaust system in post 254 on the Thread called "Performance Exhaust and Header for Boxster".

Yes, I saw that in the diagram. I don't recall seeing 02 bungs before and aft of the secondary cats on my car though. There might be a place to tap and drill a set. 2nd issue with that is your wires for the 02 sensors arent' nearly long enough to stretch back that far so you'll have to cut and splice some extensions. I heard that can backfire because the longer wire has more resistence which can cause a CEL as well. Did you install the headers yet? Let us know how they work out.

[jhandy]

Why cant someone download and copy the DME program from a European Spec car (no CEL with no Cats), and then email it to the USA and we can download and flash our american DME computers to avoid the Cat delete problem?

just wondering,
James

[Kevfra]

I have the same question, as I also live in California. I've considered all the possible mods but I'm just too lazy to make the switch every two years for testing. Today I am installing the catback exhaust system, but that will not void my smog requirements. I think I could get away with cat bypass on the second set because nobody ever looks under the car, and with a good engine I might - might - pass emissions even without those two cats. But intsalling headers and removing all four cats - no way.

[j.fro]

The price has gotten just too good, so I pulled the trigger as well. On the auction site, they had a "best offer", so I offered $95 plus the $39 or whatever shipping. All in, it was under $140. The install went pretty well today. I had sprayed all of te bolts & O2 sensors a couple of days ago with PB Blaster. Everything came out nicely; I used an impact wrench on the bolts I could reach with it, a couple others just got the ratchet and elbow grease. The header-to-cylinder head bolts all survived (whew!), but the header-to-exhaust pipe bolts snapped on three out of six. Two of those were the splined press in bolts, and I had to pull the whole catalytic converter pipe out and really go after them with the sledge to get them out. That was the worst part of the whole job. The only other burble was that on the passenger side, one of the center bolt holes was off by a hair. And the gaskets were a bad match. Fortunately, I had a set of Porsche gaskets, and with a little patience and work, I got all of the bolts in and tight. The new sound is delightful! much deeper, and the growl is more pronounced. A while back I modified my muffler internally to bypass the secondary chamber on each side (like the Sebring muffler, but without the external pipes), and I've "modified" my catalytic converters to flow better. On the bottom end, I may have lost some torque, but after 4000 RPM, she takes off! Money well spent.

[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.

[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.