could load readings in evoscan be used to compare one car to another?

eg. 2 evo 6's doing a 3rd gear pull on a straight/flat bit of road.

am I correct in thinking that the higher the load the more power you have?


.....its just that my evo 6 pulled higher loads at 19psi in third gear than a friends tme that was running 23psi

 

If you have a boost leak that'll happen.

 

usually higher load with minimal knock implies more power but if the MAF/intake air data was messed up (due to bad intake or sensor), it's also result in higher load as well and it'll be wrong for the power calculation.

I helped a friend data logging the car and his loads were abnormal high at high rpm above 6000. I found that he had a "frankerstein" intake (AEM or Injen pipe I'm not sure and HKS filter) that messed up the whole thing. He can't be making over 400 whp as logged by evoscan. :-) LOL.

 

Weight has alot to do with load.

 

You can think of load as torque, or rather, how much air is being combusted per piston stroke. In that regard, you can get an approximate idea of how well you're doing by how much load you're holding.

 

yeah thats kinda what I was thinking!


does weight play a part? - trying to get my head around it....I'm thinking if you have more weight then you need more power to move it.....ending up with the same result???......does this make sense?

.....going for a lye down now....me head hurts.....lol

cheers

 

Something like that, which is why you typically don't see the same load in the lower gears as the higher gears. In the higher gears, there is more resistance working against the car, which drives up exhaust gas temp, which of course spins the turbine faster (which tends to increase load).

 

Hypotetical question with a 9 turbo, what will yield more load in the upper (7300) rpm with all other variables equal (mods, fuel etc):
less boost(19psi) + more timing (16-17*) or More boost (21 psi)+less t( 14-15*)?

 

More boost.

 

boost because you are directly affecting the amount of air being pushed into the engine... which is what load is based upon

 

ya. more boost for more torque. and torque is the real power

 

Timing definitely effects torque. I gained 65ft-lbs of peak torque and 50ft-lbs all the way to redline adding 6 degrees of timing.

 

Please clarify where in the rpm band you added the 6*, at what boost and using what fuel. If I add 6* across the board on 93 oct my engine will spit parts out the tailpipe.

 

I added timing across the board (2-3 degrees), but the peak addition (6 degrees) was done at like 6500k-8500k, where I am when I drag race. I am running 31psi of boost. The reason I did this was because I was running very conservative timing for E85.

I was just trying to point out that adding timing definitely effects torque directly. I am not saying that is an option in your case, if you are already running maximum timing for your setup.

This makes perfect sense, seeing that igniting the fuel earlier would give the mixture more time to burn and therefore produce more force on the power stroke. Timing is degrees before top dead center that the spark plug fires. Too early and you explode while the piston is still traveling up, but too late and you don't burn the fuel efficiently and make less power.

Adding boost will also increase torque though.