Hello!
Has any of you any experience with results of ECU tune like Kleemann K1 or similar. Kleemann tuned my, promising around 12% hp increase. That is like 30 hp gain!!! Seems too much for a naturally aspirated engine. Can't say I feel much difference untill I go on a highway where it seems to pull better from 160-250 km/h.

 

Dyno

 

I know but nearest dyno is at least 4 hours driving on a highway.
And since I didn't run dyno before tune how could I know the gain?
Do that's why I ask for experiences...