Hey guys I got my truck dynoed tonight. It is a 2002 1500HD with the 6.0 the mods are UPD intake with K&N, and true dual exhaust flowmaster 50 series and magnaflow x pipe. I would like to know what you think it should have dynoed maybe someone else had theres dynoed that is basically stock like mine. I will post the charts that were given to me as soon as I get them scanned.

JK

 

My 05 dynoed out around 265ish(Avg) with only a Magnaflow Cat Back.

On the last run of 11, if the speed limiter wasn't on, it looked like it was headed to 280rwhp, but that is just an educated guess, although a realistic one.

 

My '02 Denali hit 280awhp/310awtq. Mods with those numbers are with Flowmasters "6.0 catback" system.

But this is on an all-wheel dyno. Supposedly losses from all-wheel drive are roughly 30%, while 2 wheel drive may be in the 18%-24% range. Of course this all depends on the vehicle, just rough percentages all the dyno shops have thrown at me.