Aha. Think that's similar to the S14 exhaust.... i.e. shite. The JDM manual exhaust is much more free flowing. Not as much as a 3 inch straight through, but better.
No, no. I'd say it was just the exhaust too. Oh, and a 100RON ECU map with a tad more boost. The true JDM S15 wouldn't run on 95RON without a different map. No way :no: