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Hello, I have a 2008 duramax with 127k, it has a 4inch straight pipe and quadzilla stealth 2 set on 50 hp no dpf. Just wondering if this is a safe setting to use with a stock tranny and have it last a good long while? Could I bump it up to 70hp or 90hp without any trouble? I also would like to know if i should install an egr blocker plate or full delete kit along with a pcv reroute? Or if doingthe egr and pcv is even worth it with 127k on the truck?
Thanks, Zach
 

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I would personally not bump the tune up. I would do the pcv reroute and the egr delete. I have surfing this site for a while learning about all the good and bad of these trucks. Most of it is good. Tons of good threads and stickies here to look at.
 
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