actually, depending on how hermann tuned it and if you have enough fuel left with the injectors, you should be able to add the 4# and not retune it. I don't know all the specifics regarding tuning, but my understanding is that when tuned with the MAF transfer functions, the computer will compensate for the added boost. But, like I said, as long as the MAF has room left with whatever setting hermann tuned it on and the fuel system.
you can't fully compare, but for argument sake, I use the same tune for 10# and 25# of boost and change nothing but the fuel octane. of course, I can probably get more out of it with a race tune for the higher boost and fuel used, but I am not worried about that with the turbo setup. Also, depending on the fuels used, when you put race gas in, you should make sure the tune is setup for the stoich of that fuel since it may be different than pump gas.
anyway, that is a little more than I was getting at, but I think you get the picture. And congrats on the numbers and glad it is back together and you are enjoying it. You did most of the work, I just guided you aside from the lower and BAP. :beer:
oke: That was hilarious when I saw it a yr later. Like WTF is this? Who did it...haha
