No blown trannies yet, with 15k HARD miles on T25 set up at 12psi. But most of the time in normal driving i dont use 3rd gear just like spdracerUT said. Now i use 3rd sice i put the straight T4 on because the lag. So far i have about 10-15 miles on the new set up and ran it at 22psi today, no problems yet  . Usually I run it at 18psi though.
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Martin Jez-EEN co-founder/vice president
2003 Kenworth W900L, C-15 CATERPILLAR, C-16 ecm with 2300rpm program, marine cam, marine "59"injectors, michigan turbo stage 5 turbo, LIPE clutch, 3406B exhaust manifold.
52psi + lots of black smoke = 1000hp, 3200lb-ft
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