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Old 11-07-2007, 07:09 PM
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Just curious how much boost you are getting out of your trucks, mine maxes out at about 36psi. Mike
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Old 11-07-2007, 07:12 PM
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not to change the subject, but how come you sold your 668hp Cummins? Was it a daily driver?
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Old 11-07-2007, 07:18 PM
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Mine holds steady at 36 max psi. Occasionally it will blip a little higher than that when it shifts into 4th at around 80 mph under full acceleration. Looks like about 38 - 39 for a second. I suppose it has to do with the shift in rpm's when shifting to the higher gear with the turbos fully spooling.
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Old 11-08-2007, 05:28 AM
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unloaded mine is pretty much the same. 35ish psi
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Old 11-08-2007, 06:27 AM
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Under a heavy heavy load condition mine will flash 39/40 biu as soon as she hits this the ecm shuts the fuel down to stop the boost from going any higher even with the hypertech on board, so I have been told that these trucks will spool over 40 but mine will not!
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Old 11-08-2007, 07:35 AM
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Stock I saw the truck hit 40 twice, I was climbing a steep grade with 10,000lbs load and the turbo was at full boost which was about 37 or 38psi, then my speed started dropping and it hit 40 psi.........but now with the programmer the needle goes past 40psi so need to get a gauge on it to find out where I'm at...
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Old 11-08-2007, 07:40 AM
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Quote:
Originally Posted by PSDfan99 View Post
not to change the subject, but how come you sold your 668hp Cummins? Was it a daily driver?
Very tuff question but I would have to say 2 things, first my 9 month old son with his car seat in the back the front would have to be all the way forward which made it very uncomfortable for my wife and in return it made it very hard on me, so I wanted a bigger cab. I also wanted to get back into something that I would not have to keep dumping tons of money into, not that it was not reliable but where I was at with it I could no longer put factory parts on anymore, everything had to be aftermarket with minimal to nothing for warranties. "I REALLY MISS THAT POWER NOW THOUGH" It is hard to beat a 600+ hp daily driver but I do not regret my decision to get this new Superduty at all. Mike
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Old 11-08-2007, 07:44 AM
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Damn, I'm only seeing 32ish unloaded.
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Old 11-08-2007, 07:48 AM
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Quote:
Originally Posted by TwinTurboStroker View Post
Stock I saw the truck hit 40 twice, I was climbing a steep grade with 10,000lbs load and the turbo was at full boost which was about 37 or 38psi, then my speed started dropping and it hit 40 psi.........but now with the programmer the needle goes past 40psi so need to get a gauge on it to find out where I'm at...
I agree that a gauge is very important, but I would also think that once we start modifying and pumping that boost past the stock limits that we should also be monitoring the drive pressure so the head gaskets dont pop out, atleast on the Cummins this was important. Mike
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Old 11-08-2007, 07:14 PM
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I cant wait to see 40+ Finally got with KEM today --- !!!!!!!!! yeah cant wait to get my smoke back !!!!!! no more regen for me :'}
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