This is my first post. i have a 2009 Infiniti G37S Automatic with Stillen Gen3 intake, Stillen Cat-back exhaust and stillen grounding wires. i live in California and want my car to stay street legal. I am looking for headers. I called dc sports and they said that there headers are not available yet (even though I have seen them for sale on multiple websites) and that they will be soon. As for them being CARB legal they said they have submitted their info to California and are waiting for it to become legal. They told me that this would happen near the end of the year or beginning of the year. I have looked at stillen's headers and they are not 50 state legal. DC sport said something about being grandfathered in. I am getting my car smog testes at the end of the year. Any ideas? I am looking for more horse power, but not the supercharger (yet at least). I have looked at the bully dog programmer and hyper tech max energy. Keep in mind that I want to keep the vehicle CARB legal.
Thanks

 

Raising an old question. I recently got a g37, seeing if anyone has ever got some carb oe exhaust manifold. Thanks

 

Welcome to the posting side of the forum
Moved this to a better folder for specific help. Don't wait 5.5 years for your next post

 

Doing an engine rebuild on an '07 coupe and wondering the same thing. Manifold bolts are rusted to down pipe and it may just be easier to cut and replace since they are so hard to reach. I can find stock exhaust manifolds, but if there is a CARB header option for a reasonable price I may take it.

 

Hello,

Did anyone find CARB legal exhaust headers yet?

 

if you live in California NO!

 

Dang.

If I install them, will the smog place notice?

 

So carb legal headers would be just as restrictive as oem headers wouldn’t it?

 

I'm not sure anything would really change from an emissions perspective with carb legal headers employing equal length tubes?

ex OEM: https://www.z1motorsports.com/manifo...s-p-23493.html

Long tube headers are power adders mainly because they replace the cats and deploy equal length tubing in addition.