Direct Connection ( Mullen LA ) heads

mbaird said

I suppose if you are using the HP number to baseline your ET it would help isolate other potential chassis or drivetrain issues it would matter but if you are using the dyno/flowbench to track progress the actual number wouln't make a difference as long as it was consistant.
In other words if yourdyno reads 100 hp and after you change jetting it reads 105 it was a positive change... if you jet up a little more and the HP goes to 95 you know to jet back down .

Its only when you are comparing data to other dynos/flowbenches that things get things up. Or communicating data to others such as in this case .

Click to expand...

If this is the case then anything you do on the dyno will not relate to the track. It takes X amount of power to produce Y amount of power. That’s science. If your Dyno isn’t close, you have no idea what you have.


In your scenario you could add a zero to the end of each number and by your thinking it wouldn’t matter. I say it does.

You example of 105 verses 100 HP is a 5% difference which is a mile. 5% on 600 HP is 30 HP and that’s a mile.

You should be able to put your engine on 5 different dyno’s and all of them should be within 1% high to low. If they aren’t, someone isn’t correcting for weather and such or they lie.

As one more example, if I know that on my flow bench 300 CFM with a well prepped short block and proper tuning makes 600 HP and your bench says that same head flows 330 but it makes he same power. One bench is wrong.

It’s simple really. To keep repeating the same worn out nonsense over and over, bullied along by the same guys who make their benches lie keeps the hobby ignorant and it makes people make bad choices.