Silver Bullet Tuning makes 625hp smoke free.
Here is a graph from a customers truck last night on our DynoJet dyno.
Customers current set up is as follows.
2006 Mega auto
St. Joseph Diesel 50hp nozzles
Air Dog 150
Stock Cp3 with Arson III
Hamilton 181/210 cam with springs
Borg-Warner S363
Left Coast Diesel/ATO built transmission
Customer was previously running a Garrett Stg 3 turbo with a popular box tuner as programming. Customer had complaints of excessive EGT's, smoke, and rattle.
Horsepower best with that setup was a 1600*EGT 575hp.
Customer contacted me about EFI Live tuning, at that time I was still in the beginning stages of tuning and still feeling the process out. Customer (Kevin) decided that he would like to be part of my testing process and was ready to begin.
We started our tuning endevour with his Garrett still on and functioning. I began with making the truck clean and smooth to drive. Once driving characteristics were set up correctly we looked for more SOP power. We were able to squeeze a small amount of SOP power from that set-up, but upon myself getting in the vehicle and driving it. I determined that the poor little Garrett could not safely support the fueling.
Kevin decided to make a turbo swap and shoot for 600hp smoke free. We settled on the BW S363 for its quick spooling and LDP 68mm exhaust wheel and the compressor map flowing enough air to SAFELY support 600hp.
Kevin has had the BW on for approx 1 week and was thrilled with the added power and pulling this turbo presented over the Garrett. EGT's were 1500* but now by 110mph and not the 80mph with the Garrett.
Kevin and I decided that it was time to put it on the rollers and see what we could squeeze from his set-up. Remember the goal when this all started was a "Clean 600hp".
Loaded the truck on the dyno, first pull out of the gate was 602hp. After studying logs I was able to massage another 20hp from the set-up until we had reached the fueling limits of the Cp3. We were able to hold a 3100uS PW but a bump to 3300uS proved to be too much. Once a duration limit had been found I upped the timing 3* to see if we were saturated as well. Truck picked up 4hp with 3* of timing but carried power out slightly better. Lastly I tried to add some pressure (mind you I work only within stock pressure unless deemed necessary) and unfortunatly like with adding more duration, adding pressure proved to be a loss as well. I was commanding 180Mpa at 2400rpm@140mm3 and the pump was only able to achieve 163Mpa.
So after 8 or so runs we went from a 602 clean tune to a 625hp clean tune that was maximizing every aspect of the air/fueling system. Smoke at WOT is a light gray haze.
Blue line is beginning timing
Green is 3* added.
You can see from 105mph to 115mph that the 3* made the power hold on longer but did nothing for peak power.
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