Which Headers Eurocharged or Kleemann ?
On the dyno, 409whp before and 446whp after, and that was with a leak. Resolved the leak issue. It wasn't tightened properly down to the block. No more leak issues now.
Took it to the track for a real test. Trap speed went from 115.75mph to 121.75mph. I gat lazy going to the track today because I just re-tuned the car. Will try another day.
.I don't see how the long tubes worth more than double the price?... I was originally on the fence about that, but I just don't see the reason. What do they make, an extra 10Hp over the "shorty/midlength" manifolds for more than double the cost? If anyone can explain that, I would love to know why anyone goes with long tubes.
Are the EC and Kleemann's really the same in build quality and power gains? They are both $750 at the moment, so I was gonna pull the trigger this week.
But both require a bit of work that gets installed. Does not seem to be there any bolt-on models in available for sale..

If you keep the factory cats, you should open up the inlet side to match the larger outlet side as there is a significant difference in diameter. I suspect the smaller inlet size was done to match the standard factory exhaust manifold which is used on various models. Bottom line, any and all improvements to the 113K exhaust system will provide significant HP increases.
http://www.ebay.com/itm/KLEEMANN-M11...615a47&vxp=mtr
The Best of Mercedes & AMG




If you keep the factory cats, you should open up the inlet side to match the larger outlet side as there is a significant difference in diameter. I suspect the smaller inlet size was done to match the standard factory exhaust manifold which is used on various models. Bottom line, any and all improvements to the 113K exhaust system will provide significant HP increases.




