hey guys good morning,
I am a major noob to computer tuning, so after buying my hptuners setup I took my car to a very reputable shop for dyno tuning. the car is an 09 challenger rt with a 392 stroker 3.927 bore 4.050 stroke it has a custom comp cam from modern muscle 228@50 .602 and 238@50 .597 on a 114ls heads are hand ported stock eagles and it has a 6.1 intake with a 90mm tb, i don't know how much of that you need but there it is...
The car made 439hp and 452fl/lb at the rear wheels and it drives ok but if I try to downshift the 6speed manual I loose throttle until it gets back to around 1000rpm then the throttle comes back like nothing ever happened also the idle intermittently surges at stop lights (one it will the next it wont)? any help would be much appreciated.
andrei tune plus 2.hpt