Originally Posted by DS Motorsport

Well i think i'm just unlucky and have gotten a bad one. It's just slow, low end is terrible and top end is like most of the standard engines, it doesn't scream.
I've already replaced both of the bearings because the front one was leaking, and changed the carb. because i thought that was causing the issues.
Tried a lot of different exhausts and different gear ratios but just no power.
When i tune it to get some performance out of it it runs on 180 celsius.
And JP won't take it back, while there is simply something wrong with it.
Too bad for a 420 euro engine, next engine will be a RB. I'm done with the terrible service (no service) from JP.