Duramax Diesels Forum Truck of the Week
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Old 08-10-2016, 11:32 AM
IdahoRob IdahoRob is offline
Join Date: Jun 2007
Posts: 1,098


I've been running the twins now for a couple months. One dyno session is all I've been able to make time for. The truck made 550hp on the same pulse but noticed that rail pressure is dropping on the same pulse that it used to keep perfect rail with. May be filters getting restricted, my be cp4 not being happy. The spool up is a bit slower IMO but top end pulls harder than stock turbo once up on boost.

My son raced it at the local dirt drags and they had a sled pull so I entered it without any prep at all. Snap decision since I was there anyway. Just a local brush pull series with 20 other diesels. Most of the other trucks run the series so I thought I was just wasting my money. Ended up putting 70' on the second place truck. I really like this sled pulling stuff. https://www.youtube.com/watch?v=GIIfnre7cLY
Please email me with questions at rob@atptrucks.com

2002 GMC 9.36 @ 154MPH SoCal engine, Randy's 48re, Big Twin Diesel
2013 LML, twins, MIKE L @ Inglewood Transmission
2018 L5P, Lift and tires, 14.65 @ 93mph
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