Darin, not saying you don't know the car well, in fact not saying I know it well. You more than likely know infinately more than me about the 2jz; however, I still have to disagree with you a bit. The pulled hose allows the stock twins to run at full boost, while all the spring mod is doing is keeping the actuator arm from opening too soon (generally due to premature failure). It has nothing to do with how much boost you can run, but how well it holds boost. I ran with a pulled hose during bpu prior to getting the evc5, and boost would fall by redline, with the mod boost would hold better and was much more 'predictable'. Power gains were noticeable as well.Turbo-D said:So keeping the wastegate closed and keeping the wastegate closed are 2 separate things?
Regardless of how you do it your accomplishing the exact same thing short of allowing it to open at red line which with a stock engine and turbo's you should actually let off anyway. I have my own dyno charts where you can see all of the HP curves. Pulled hose, TTC on my BPU+++ 6spd was the cleanest looking run and held the most consistent HP. Of course the best mod is to drop the silly twins and put in a single. LOL
8 years under the hood boys........