OBX Headers

[insite]

Anyone try these? They appear to have smaller primaries than the other standard eBay headers. Anyone know the tubing diameters?

[Johnny Danger]

Its hard to say, but those maybe be file photos. Looking at the sets on Ebay, each one appears to look kinda different ??

[insite]

most of them are the same. there's one guy who posted a pic of the 'usual' ebay headers; the rest look like a new breed.

most of the headers out there have primaries that are way too big for the boxster. these look like they may have narrower tubing, which would yield a lot more power. i've got questions in to a few sellers & will post the result.

[Fluellen]

How small do you want the primary diameter to be?

I have M2 (ebay) headers; they have a 42mm primary OD. This seems a pretty reasonable primary size to support a 250-280 hp car.

I guess you could increase midrange torque a bit by going to a slightly smaller diameter.

[insite]

wow; that's almost perfect for the 3.4L tuned to 6700RPM torque peak.

which engine are you running them with? how's the build quality? notice a power improvement over stock? thanks.

Originally Posted by Fluellen

How small do you want the primary diameter to be?

I have M2 (ebay) headers; they have a 42mm primary OD. This seems a pretty reasonable primary size to support a 250-280 hp car.

I guess you could increase midrange torque a bit by going to a slightly smaller diameter.

[Fluellen]

Mine is a mostly stock 3.2; as you said, perhaps a little smaller diameter would be better.

I haven't installed them yet!

So far I am impressed with the build quality. The flanges are thick. The welds look good - not gorgeous, but plenty good. I had to sand off a bit of casting residue and use a grinder on some spots, but nothing major. I hope to install them tomorrow and will report on how they fit.

[Hadydaddy]

i tried them and they are horrible, instead i would recommend you to topspeed they are on ebay, and way better than OBX stuff.