Low dyno numbers tuner or something wrong ?
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Teching In
Joined: Jan 2017
Posts: 35
Likes: 1
Low dyno numbers tuner or something wrong ? Have a 2001 camaro with forged lq9 370ci fast 92 intake manifold 92 throttle body chris1313 velocity stack intake stock 317 heads torqued v2 cam 1/3/4 headers 4K stall 4:10 gears and only put down 342 hp on the dyno car feels strong but those numbers are really low in my opinion should I find a new tuner or something is wrong ?
Launching!
Joined: Mar 2019
Posts: 267
Likes: 171
A dyno is a tuning tool and that's it. I don't pay much attention to the numbers. I look at how it fluctuates with tuning changes and look at the entire power curve to determine the ideal stall/launch and shift points.
Not GM related, but I did an A4OD to C4 swap (stock 12" converter to 10" 3500) in a late 80s fox body with no other mods done. It showed a -20 hp/tq loss on the dyno, but the car went 0.5 second quicker and picked up 2 mph at the track. Don't fret the peak numbers. Go to the track and see how it performs.
Not GM related, but I did an A4OD to C4 swap (stock 12" converter to 10" 3500) in a late 80s fox body with no other mods done. It showed a -20 hp/tq loss on the dyno, but the car went 0.5 second quicker and picked up 2 mph at the track. Don't fret the peak numbers. Go to the track and see how it performs.
The reason I ask for a graph is this. If the curve looks good and carries out to 6500rpm+ then I wouldn't worry about it necessarily.
If it peaks at 5500 and falls off a cliff....well that's a different story...
If it peaks at 5500 and falls off a cliff....well that's a different story...
exactly what he said! Post up a graph for us to see and then take it to the track
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It's hard to believe there is a world where 340 Hp is a good number. Please share your dyno chart so we can see if anything looks odd.
My dyno runs always look odd. For whatever reason, my car isn't dyno friendly and spins the tires above ~420 lb-ft torque, so my Hp curves are straight as a ruler. Been that way with 2 engines now. I go there to get a tune and then polish the tune on my own. Believe it or not, I can get a darn good tune on dyno even with the tires slipping. It will utterly consume my drag radials though. I put street tires on last time and they didn't wear at all but also spun.
My dyno runs always look odd. For whatever reason, my car isn't dyno friendly and spins the tires above ~420 lb-ft torque, so my Hp curves are straight as a ruler. Been that way with 2 engines now. I go there to get a tune and then polish the tune on my own. Believe it or not, I can get a darn good tune on dyno even with the tires slipping. It will utterly consume my drag radials though. I put street tires on last time and they didn't wear at all but also spun.
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