Well, today was the day we finally got the Boosted Performance twin scroll kit strapped to the dyno for a proper tune. I am sure most of you have seen the build thread and what this kit is all about, so I won’t get in to details about that.
To start with we installed the 8.7psi spring in to the two Tial waste gates, and those yielded some good number with boost falling down to about 7psi by the time we hit 7000rpm. With the waste gates in there, and the drop in boost the car made 456whp. Not too bad at all. Once the springs get hot they loose they soften up a bit, hence the drop in boost.
Luckly (thank to Lee) we had a manual boost controller handy. Plumbed it in (only took about 10 minutes to do since everything is easy to get to) and proceeded to tune for more.
The results speak for themselves, and the tune is nowhere near aggressive. In the graph you can see the boost fall to 8.1psi, so a manual boost controller would be the best way to go. This did the job for now. So we managed to get the 513whp at 9psi, according to the MAP log in the dyno chart.
This was on pump gas, no meth, or any other fancy tricks (race gas) that some use to make a kit look better than it actually is.
The turbo is a Precision 6266 T4, twin scroll, 1.0 a/r turbine, 340lph fuel pump and 750cc Bosch injectors. These are the items that the Stage I kit will come with. So this is what you can expect as far as numbers go.
Those with videos can post them in here as well, but I see that they are already out in the other thread.
I would like to thank Greg and Sebastian from Specialty Z. These guys were great, and very professional. If you are in the L.A area these guys are great and should be considered for all your tuning needs.