you have full exhaust and a complete intake system so figure around 20 rwhp for the exhaust and antoher 20 give or take a few for the intake set-up. Your a good 40 over stock at the tires. On a dyno jet it should be around 220 - 225
Hmmm, 213 without intake, MAF, headers or H pipe ??? sounds a little above average . With a 15% loss that would be around 250 at the flywheel, are you going back to the same dyno for the new run? Dyno's can show very diffrent numbers so to have a good answer on what the mods did for you, I suggest you take it back to the same dyno. Considering what you have told me, you have a very strong car and with the mods you have added to the old dyno numbers you will get more than 7rwhp. Headers and h-pipe is always good for 15, and the intake is an additional 10-15 so you should see 20+ over the 213 I would think.
Oh yea I have heard about them, and they are right your car is somewhat of a freak, 213 with such a small amount of Small power producing mods is very impressive. Good luck with the dyno run............hope you are happy with the numbers you get. :thumb: