put this in another part of the site but want this delt with quite quick 
i have one of these power caps fitted to my gsi dont like the look of it but am i getting any better performance from it being fitted as i would like to have the SFI box back on as it looks more together

i have one of these power caps fitted to my gsi dont like the look of it but am i getting any better performance from it being fitted as i would like to have the SFI box back on as it looks more together