mp90 magna vs Roush mp90

[shelbycs6]

well guys i have an off the shelf eaton m90 4th gen from magna and i was thinking of doing some porting to it since it looks it doesnt come with any porting done to it as compare to roush mp90 that has been claim of having already some port to it and doing some more porting to it you dont gain any more power but rather you make it perform poorly so if i bought it directly from magna will i see gains from doing an all out port job and i was thinking if vmp 2.57 pulley fit ony my car i currently have a 2.6 pulley on making 10-11psi


thanks

 

[SonicDTR]

Is there a question in there? Or are you telling us something?

 

[shelbycs6]

oh sorry lol long story short, my question is will a off the shelf eaton supercharger m90 4th from magna gen benefit a porting done to it as compare if bought bought by a manfacture ex. roush, saleen that suppose already have some porting to them