Hello everyone! So 1 Week with the car and I have already made a trip over to VMP Performance for some mods. My 2014 GT500 was mostly stock with the exception of a O/R X Pipe and a Lund Tune from the previous owner. When we got to VMP we flashed a stock tune into the car to get a solid baseline before adding power. VMP and myself were filming the results of each bolt on added to the car and the corresponding gains which I think is great info for helping everyone decide on mods. I will mention that there appears to be some sort of fuel pump issue with the car which prevented us from getting to 700rwhp and we wanted to keep things safe with this issue present (pressure drop on rails). I have a corresponding video and VMP also plans to release their video which will have significantly more tech tips and information. My videos usually glean over the info.
Baseline on Stock Tune
We then flashed in a VMP Tune. The Stock tune actually threw some good timing at the car at the top since it was cooled down quite a bit. You will notice peak hp gain isn't very significant but the torque gain and the gains in the curve are definitely significant.
We then decided to throw the JLT 123mm Cold Air Intake and the VMP Twin Jet 67mm Throttle Body on the car with a VMP Tune to see what kind of gains we get before changing to the 2.4 pulley. We saw some fantastic gains both in the curve and at peak. There is also quite a bit more supercharger sound that can be heard outside and inside of the car with these two modifications. We also replaced the spark plugs with some Brisk plugs gapped at .028
2.4 Pulley and 90mm Idler. This is where our fuel issue started to become more obvious. The car is still safe but the pump is being worked much harder than these cars normally see at this power level.
Overall I am very happy with the results. I do have to do some more investigating to figure out the fuel issue. I plan to add a set of LTH Longtubes, VMP Gen 3 Supercharger, and L&M Cams in the future.
Video Link:
Baseline on Stock Tune
We then flashed in a VMP Tune. The Stock tune actually threw some good timing at the car at the top since it was cooled down quite a bit. You will notice peak hp gain isn't very significant but the torque gain and the gains in the curve are definitely significant.
We then decided to throw the JLT 123mm Cold Air Intake and the VMP Twin Jet 67mm Throttle Body on the car with a VMP Tune to see what kind of gains we get before changing to the 2.4 pulley. We saw some fantastic gains both in the curve and at peak. There is also quite a bit more supercharger sound that can be heard outside and inside of the car with these two modifications. We also replaced the spark plugs with some Brisk plugs gapped at .028
2.4 Pulley and 90mm Idler. This is where our fuel issue started to become more obvious. The car is still safe but the pump is being worked much harder than these cars normally see at this power level.
Overall I am very happy with the results. I do have to do some more investigating to figure out the fuel issue. I plan to add a set of LTH Longtubes, VMP Gen 3 Supercharger, and L&M Cams in the future.
Video Link: