jmartpr

Also......if these headers are GMG design or Cargraphics. They look very similar (long tubes) from the posted photo. Any other details on these (power, torque increases, etc.)?

Ferrarisimo

Looks like they almost certainly are.

Here is a pic taken from Cargraphic's site:



And here's the pic that GMG posted (note the stamped arrow and writing):



Both pics have the same stamps.

ShakeNBake

They use the same CATS (HJS)- I don't think they are the same products, at least they've never been in the past. GMG is a master fabricators (or at least they work with someone who is).

ChrisF

Dyno results?

jmartpr

When you mention in the past that includes headers for the Cayman/Boxster platform?

James-GMG

Sorry for the delay guy, but here is the first pass for different sound clips taken from Thermal last Thursday.

DrPhil Gandini

My Fabspeed headers have HJS cats (with stamped info like the image above.) These are obviously the best cats out there, and the best fabricators use them. The headers, though, are VERY different! I really like the look of those GMG headers. I have FS headers on my GT4, and had them on my GTS--I'm very happy with them, but I'm also glad there are options. Maybe one day I'll try those GMG headers--love the look and wonder what the longer pipes would do for sound, HP and (most importantly) torque?

Ferrarisimo

Ah, noted. Didn't realize the cats were shared across a number of different header manufacturers.

Thanks for the info!

Bardman

Any update on dyno results for the headers? Exhaust?

odwa

Bump, any update for dyno results?