Harry Karlsson
New Member
- Joined
- Jul 14, 2017
- Messages
- 18
MRT XB power pack installed.
I have been considering the XB pack. I have found a Victorian agent for the setup. How much of an improvement is it over stock? (I have had a Stage 1 tune which game me +15 to 20 wkw)MRT XB power pack installed.
Any drone?Fitted the STi mufflers, sound and look great swap was really easy with an extra set of hands to help hold things in place while contending with the exhaust hangers.
No need to worry about drone when tailgate area is sound deadened.Any drone?
I had the car on the dyno again today. The total power gain above stock tune is a whisker under 26Kw at the wheels, and the car drives like I think it was meant to. They told me it is getting about 5-6Kw more at the wheels more than a current model unmodified WRX STI would on the same dyno. I am happy with that, I was told they could push more out of it, but makes sense not to push the CVT too much.I recently had an Invidia 3 inch J pipe with a high flow cat convertor fitted. I have kept the rest of the exhaust stock. The car has been retuned to suit, and it pulls noticeably stronger than before. I had already had a Stage 1 tune done to it which was good, & this bolt-on addition has made a big improvement again....The tune was done on a dyno on a 41 degree day, so I have no performance number/graph etc as it was difficult in that heat to get an optimum reading. They have offered to do it on a more normal day & I will do that