STM O2 Housing

[ohio_dsm]

I am looking for an externally gated O2 housing and the only tubular I have found was from STM tuned. The more I research it looks like the exhaust flange is different from the stock flange due to them selling downpipes to fit specifically their O2 flange. Is this accurate?

 

[Spleen8urLSX]

Based on your profile if 300ish is what you’re looking for and you’re staying with the 16g then an external gate is a waste and sometimes more hassle. A ported stock o2 housing is more than sufficient for your goals without spending hundreds.

 

[ohio_dsm]

Based on your profile if 300ish is what you’re looking for and you’re staying with the 16g then an external gate is a waste and sometimes more hassle. A ported stock o2 housing is more than sufficient for your goals without spending hundreds.

What's the max hp stock trans can take? Im.coming from the Subaru world where WRX can only take 300ish. If I can get 400 to 500 on a stock dsm tyranny then I will go bigger. It's stock now and I'm just starting the build.