[suzook1300]

Just had a SBE 2012 LSA motor built and tuned by very reputable businesses here in Texas. The car made 725 to the wheels on pump gas but on the dyno, the power dropped off very rapidly at 6200 rpm. The tuner said it looked like valve, float and his software showed that the throttle body was still 100 open. The car has a Dedicated Motorsports "She gone" cam by Texas speed, 255 heads with 660 springs also by Texas Speed, and a NW 102 throttle body, "non Boosted" as I was told by a vendor that the boosted version was only needed if running high boost and a centrifugal blower. I am running 14 lbs of boost through a ported TVS stock blower. On the street the car pulls great through about 6k, then it goes into limp mode and I get the "service stabilitrac" warning. This happens at exactly the same rpm every run. Could it be that the boost is pulling the throttle blade closed, seeing as to how it is the non boosted versionn of the throttle body. Just wondering if anyone has had this issue. Thanks