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Message: [QUOTE="elrodalexander73, post: 1144753, member: 16217"] Anytime you tamper with a DPF, an EGR system, tune a truck, change PW and timing to the point where it will fail an opacity test it is believe it or not breaking a federal emmisons law.. I've been working with a guy up in Kentucky deleting DDEC 6 Series 60s and ISX's for about a year now, and how everything gets billed, you have to be very careful not to leave a paper trail. Oh just ask Bruce as PDI, he's paid millions in fines cause his smart self advertised on National radio and paid dearly. Nearly all of the advancements that have helped us make stupid power in the new engines are for the soul purpose of emissions advancement. Heads that have a port swirl like no other, common rail systems have gotten far better. Imma leak a sweet little secret that'll break all Ford guys hearts on here by the way, my uncle is Paul Hurley, if you call the Bosch engineering center in Novi Michigan and ask for him you'll get connected. He was responsible for the Development of the CP3 that was developed for the ISB and Duramax engines. A while back I asked him why International chose to opt from common rail in 2003. His response was this, "They didn't, they had proposed the idea of adapting the CP3 system which was in the works, we developed all the peices to make it possible, wasn't hard, submitted a bid, and weighed the engine, the problem was the 7.3 was too heavy with all of the emissions equipment in place at around 1275lbs. They scrapped the idea and developed the 6.0/VT365 literally overnight and used their own fuel system. It made good power, and held up to about 275hp and hardly failed under warranty. Fords choice to alter the design is what plagued them with dozens of warranty problems, we were glad to be away from that engine and it's problems." All in all what this mean't was that the 7.3 was too heavy and in the truck industry where the ISB and T444E were head to head at the time, the engine that was lighter and a truck that could carry more payload is what really sells on the lot to large fleets. Freight on a truck is money no matter what end of story. The VT365 was built to fit a weight class and make the same power as an ISB and 6.6 IZUZU in the light-medium duty truck market. It was the consumer automotive world that had the true desire for the power output levels we have.. Just a little leaked info from a top bosch engineer lol... [/QUOTE]