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im curious
how much money ( -)and power (+)might come from a change of cams ( stage 2 ?)
the car is supercharged nb 150rwkw. no engine changes but for sc exhaust and intake plus ecu and 380 injectors no race just country streets

NB with aftermarket cams not as common as NA because NB BP motor uses solid lifters & shims (not self adjusting) as opposed to NA BP (& B6) motor which uses hydraulic lifter assembly (basically self adjusting), hence changing to aftermarket cams is a bit more complex & time & money consuming. In very rough round figures: cams could cost from anywhere from $500 to $1k or more depending on what you get. At least you already have an aftermarket standalone ECU, but it will need to be retuned, so say another $1k. Then add another $500 or so for other parts (shims etc) & labour.

thanks for that
power improvement ?

mhj wrote:thanks for that
power improvement ?

On a stockish sort of motor it's a "power change" of -5 rwkw to +15rwkw, depending on how well you blend all the elements of cam specs, compression, port shape, intake, exhaust and tune. I'm no turbo expert, but I'd guess the range is at least double that on a turbo, with a higher probability of going negative. .

For comparison the built bp4 in my nb makes about 190 rwkw with standard turbo cams, about 205rwkw with stage 2 turbo cams. I really need a bigger turbo to take advantage of the extra air flow the big cam allows, but as an example of what just changing the cam does that my experience.