Took the car to Delk today to put it up on the dyno and see what the underdrive pullies, JLT intake and tuning would get me.
Before making any mods, we flashed the CPU back to stock to get a good baseline. In this tune it made 260hp@5250/280@4250TQ, HP was right in line with the baseline we did a couple of months ago (261.1HP@5250/269TQ@4250) but with a few lb/ft more in the torque department.
The plan called for the installation of the underdrives and another pull to see what they might add, but this did not happen because of a missing item in the kit.
Moving on, the next thing we did was install the Predator "performance" tune into the CPU. From what I have read, this tune is good for several HP on the '05's. In my case, however, it was only good for 6HP and 3.5TQ. (270@5250/283.5@4250).
Next on the agenda was the JLT CAI. What you need to know here is that the JLT MAF size is bigger and the unti itself flows much more air than the stock setup. This was obvious as we began the dyno pull and the Air/fuel mixture went lean rather quickly. The Diablo has an adjustment range from 0-40% on the rich side, and we increased it 15% before the next pull. Again, we had to abort the pull when it started to go lean. Making a futrther adjustment of 10% (for a total of +25% from stock) we found where we needed to be. This last pull netted us 288.3HP@6000/284.5@4500. Not only did the CAI make more power, it moved the peak higher in the RPM range. Clearly this is moving some air. It was felt there was more in the car with further tuning, but we ran out of time. At some point in the future (when I have all the underdrive pieces) I will go back and give the car some more dyno time.
In a nutshell, with only the JLT CAI and a tune, I was able to see a +28.3HP/4.5TQ increase over stock. Not too bad, but nothing near what some other are seeing with a dyno tune.
Before making any mods, we flashed the CPU back to stock to get a good baseline. In this tune it made 260hp@5250/280@4250TQ, HP was right in line with the baseline we did a couple of months ago (261.1HP@5250/269TQ@4250) but with a few lb/ft more in the torque department.
The plan called for the installation of the underdrives and another pull to see what they might add, but this did not happen because of a missing item in the kit.
Moving on, the next thing we did was install the Predator "performance" tune into the CPU. From what I have read, this tune is good for several HP on the '05's. In my case, however, it was only good for 6HP and 3.5TQ. (270@5250/283.5@4250).
Next on the agenda was the JLT CAI. What you need to know here is that the JLT MAF size is bigger and the unti itself flows much more air than the stock setup. This was obvious as we began the dyno pull and the Air/fuel mixture went lean rather quickly. The Diablo has an adjustment range from 0-40% on the rich side, and we increased it 15% before the next pull. Again, we had to abort the pull when it started to go lean. Making a futrther adjustment of 10% (for a total of +25% from stock) we found where we needed to be. This last pull netted us 288.3HP@6000/284.5@4500. Not only did the CAI make more power, it moved the peak higher in the RPM range. Clearly this is moving some air. It was felt there was more in the car with further tuning, but we ran out of time. At some point in the future (when I have all the underdrive pieces) I will go back and give the car some more dyno time.
In a nutshell, with only the JLT CAI and a tune, I was able to see a +28.3HP/4.5TQ increase over stock. Not too bad, but nothing near what some other are seeing with a dyno tune.