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Junior Member
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46 Posts
Discussion Starter #1
Seeing what the opinions are for this. Ive got a 06 kw with 5.9 260hp. The 15% setting could be useful at 300hp. In general, how are these boxes for the med duty motors. Thanks.
 

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Super Moderator
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3,188 Posts
Generally, you dont see the actual gains they advertise. Also, 260 is quite a bit for a little 5.9 in a heavy truck. Sure you wanna do that to it?
 

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Junior Member
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46 Posts
Discussion Starter #3
you probably are right, since its my work truck. I just has this annoying trait of not spooling out of a driveway (hill) with a load. A similar test is if i set the parking brake and floor it in drive, it revs to 1500 and smokes. I thought for sure my new turbo was going to let it spool up. I had check engine lights for a while all pertaining to vgt codes. I hoped it was stuck open, so it had trouble spinning up at low rpms. But it didnt change, at least no more cel.
 
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