Not sure if this belongs in tech or technical write ups, so I'll let the admins decide . I had a chance to do some dyno testing on a stock GT today. Here are our results.... We baselined the car, stock. It made 269/291. Nice strong car. Good start. Surprisingly the car was pretty rich. About 11.7 at WOT. Would be nice for a blown car . Next we loaded in an SCT tune for a stock GT (we tune with both SCT and Diablo products). Next pull the car made 277/295. Most power was gained from 4k and up. The A/F was in the high 13s, leaner than I'd like to see. After that I wanted to see how SCTs fuel settings did with stock timing, so I made that tune and loaded it up. As expected, power dropped a bit to 272/292. The power drop was through the entire powerband. From there it was time to build our own tune. We adjusted a few things and richened up the lean A/F down to a nice 12.8-12.9. Power was back up to 276/293. Next we tried going up another 2 degrees of timing from our previous tune. The car made identical power and torque. Nothing to be gained there. Then we installed our PSP Induction Kit. Power rose to 287/301. There was an improvement of power and torque through the entire powerband. At 5k rpms, There was 9 more hp and 10 more ft-lbs. A/F was a tad lean. On the next pull we fixed the A/F back to the 12.9 range, and only lost 1 hp and 1 ft-lb. Next we installed the Bassani axle back it. The next pull rose to 287/303. But it picked up 4hp and 5 ft-lbs through the entire powerband. Plus it sounds great and has those killer stainless rolled Bassani tips . So starting with 269/291, we raised power up to 287/303 with just a PSP tune, PSP air kit, and Bassani axle back. Before and after dyno graph:
Is that PSP air induction kit your own personal intake or your companies... do you have any pictures of it as we are always interested in new stuff oh. and thats some great numbers -mike
