Hence his title :checkit:
Bob how is the tune like for this setup if you don't mind me asking?
Are there areas you still like to improve on?
The runs on the 3540R were done for experimental purposes only- basically to see what was possible, and if the bottom end could take the cylinder pressure. If you look at the power curve, you can see that it wants to turn more R's. Since I am using stock lifters, I don't want to turn it any harder. If someone wanted to run this turbo on the street, I would go for a smaller A/R on the turbine. I considered enabling the anti-lag to see how much it would pump up the bottom end, but thought better of it.
The GT30R runs show a much more useful powerband. I feel I completely explored the limits of that turbo- there was really nothing left in it. (although, know what we do know about the strength of the internals, we could flatten out the HP curve by upping the boost at lower r's on teh race gas map).
The tuning process was very interesting, and the learning curve was pretty steep- this is my first time tuning a stand alone. The management itself is IMMENSELY complex- it took a while to figure out exactly what was what. Figuring out the fueling and ignition was not a big deal, it was the other interactions that took some time to understand.
I also had some hardware issues- the first sets of injectors I had acted very strangely, and caused some tail chasing. The fabricated plenum I made also proved a weak point. .125" aluminum is NOT thick enough! It flows well, and obviously makes good power, but needs to be made of thicker stuff, or half round tubing.
