I got my truck dynoed at this place called Motion Dynamics last week, and was pretty disappointed with the numbers. I made 257 hp and 309 tq. They said they could tune it with HPtuners, so I gave it to them last week and picked it up today. The best they could do was 267 hp and 317 tq. They had the truck for almost a week and I told them to tune it for premium gas. I can't tell you how frustrated I am with all of this. Don't you think an LQ9 with a good intake, exhaust, longtubes and tuning should be making more power than this? I know I'm going through the 4L80E, but this engine is rated at 345hp 385tq from the factory, plus I have most of the bolt-ons except for electric fans. What gives?

 

What kind of dyno?
What tire/wheel size?
Numbers dont necessarily mean too much.

 

I know that #'s dont really mean much, but the truck drives almost exactly the same as when I dropped it off. BTW, these numbers are on a dynojet, and I have 285s on the stock 16's.

 

well u have oversized tires and ****. I wouldnt expect much outta that and the flowmaster. U also are thru an 80. I believe AJ is putting down something like 322 with a cam in it.

 

I put down 316RWHP 322RWTQ on a dynojet with cam and bolt ones on 22 inch wheels mine is an LQ4 though. Thanks Devan for the help with the tires today.

 

don´t know much about the subject but the tires alone for sure make the butt dyno feel less strong I think, and also the L80 can be harder to move then the 60,

 

haha, any time AJ
so if I were u chevy6.0fan I wouldnt be too concerned. yeah high numbers are nice to look at and all but its how fast it goes down the track that is proof

 

I have never taken my truck to the track. It would be nice to see what it would run, but I don't think It would be that good considering my truck wieghs over 6000 pounds, combined with the 3.73's, 285's, and no stall, but you never know. When I picked the truck up today I came home in the heat and heavy traffic, so earlier around 9 or so I went out when it had cooled down considerably and with much less traffic. The truck definately has more midrange punch, and I was able to chirp the tires on the 1st to second shift a few times. The truck has never done that before, so I guess thats something. Could also be due to the fact that my tranny shifts from 1st to 2nd hard enough to snap someones neck. As for dyno numbers, its not the torque that I'm real irritated about, its the horsepower. I just figured the big bad 6.0 would be getting at least 280 to the wheels.

 

So the best they could do with HPT was 10HP and 8TQ. That is pretty sad IMO.

 

take into consideration this is a higher compression LQ9, most I've seen require 91+octane fuel to run at the full potential with the stock tune, and around here the guys dont wanna run the high octane so they dont see as much as an increase with a tune...BTW my heads/cam nearly full bolt on LQ9/4l65-e pulled 407rwhp/395ftlb on a mustang dyno a few months ago