I came upon this car at a local dealership a few years ago, when searching for a SRT8. After looking the car over, I noticed it had an Edelbrock eforce blower on it, longtubes and MBRP exhaust. A little hesitant with buying a modded car at first, but it was selling for about the same as stock cars in the area, if not cheaper. I thought, lets give it a test drive and see what its about, surprisingly it drove great, smooth and had great power. Signed the deal and took the car home. Fast forward a few months later I bought the diablosport T2, everything was fine until updating the t2 and plugging it back into the car, I hit the OK button when I shouldn't have, it ERASED the tune, from then on the car would not start.
I ended up contacting a known hemi tuner to get me back up and running, and that he did, but the car didnt have the power as it did before. A few revisions later and I think it was good as it was going to get, as I didn't have a wideband and even if I did, I had no way of logging it with the T2.
After bitching and moaning to the wife on how I wanted to switch to HPtuners and learn to tune this thing myself, Christmas morning she put the mpvi2 in my hands. Im not sure if all the data in the tune is correct such as injector data, as far I know the injectors are what came in the eforce kit, I believe they are siemens deka 46lb injectors(srt4). So here I am, a few months of the wife and I datalogging and making changes these are some of the issues I'm having.
Car seems weak.
Cold starts, when backing out of the garage, it wants die, RPMs will drop really low after I give it throttle and then climb back up.
Holding the RPM steady at 1500 in neutral I get some surging.
WOT pulls sometimes feels as if the power isnt linear, will feel the car pick up power, go flat and pick up power again, it happens very quick and can probably only be noticed if you were driving.
WOT fueling seems to be all over the place, some pulls its where i want it, sometimes its rich(10afr) and sometimes its a bit lean(12afr)
Any and all help is greatly appreciated.