Originally Posted by
cory yea that number does seem low, but if there talking about a rwd set up its not bad and its about on par. and 1bar is about max efficiency range for the smaller t28s, just because its at max efficiency doesnt mean it wont make any power with more boost, just means that its at the max efficiency level, meaning your not going to gain as much per psi after that level.
also turbo effcency levels are made to have the turbo at a peak not only in performance but reliability, overspinning the turbo out of its efficency range can over time damage the turbo, wear on the seals and bearings, ect, its not to say that the majority of the ppl who go turbo dont go out the the specific turbo efficency range, rather than get another turbo that can be more efficency at a lower psi.
persay you have a 2871 and run 26lbs to get xxx of power, where as if you went 35r at 26lbs it could make that power more efficently and not take the turbo out into a range that over time can damage it.