| they useful on any, but when little turbos are so responsive anyhow, a 10% difference or whatever is bugger all.
ive seen 2litre 650bhp cars get much quicker response and a 350-500rpm lower boost threshhold, which is good, but on a smaller turbo i doubt itd help that much (considering the disadvantages of extra heat gives, ie possibly killing the turbo quicker), as wouldve thought it was a % improvment.
but honestly dont know for sure |