I guess EvoSport is coming out with there Shorty headers for the 99-2002 E55's. The cost will be around 2k and I was wondering if it will be worth the money for the gain. They are claiming better mid range and about 25hp. These will be headers only and will in no way affect the Cats or O2 sensors. What do you guys think about this product?

 

I have seen their dyno claims to be quite accurate, so it is up to you if you want them or not.

 

Did you see the dynos on N/A or supercharged E55's. I would accept those nubmers and even higher for a supercharged E55.

 

I've been planning on doing this mod for a while, but every time I ask Evosport about them I get the "3 more weeks" response.

If they are ever actually released, I'm ready to try them. I've dyno'd my car stock, and with a few light mods, so I'll be able to see how much extra hp these headers actually make to the rollers.