just got dyno
the power drop quick. look at the WHP line, it goes up and right back down. That's some weak number bro. you are dynoling ot the brakes and you only put out that much. By the way your Dyno session is to the brake, not to the wheels.
Last edited by vboy425; Feb 11, 2006 at 05:41 PM.
I would say do a compression check and a boost leak test. You may have something wrong I am guessing you had a by mail flash cause Al is real good about troubleshooting the cars he tunes when he is ther in person. I have been to 3 dyno days and witnessed him everytime there was an Evo making less power than it should he was right there turning wrench's trying to figure out whats wrong. Best of luck to you.
Also do you have any #'s from the drag strip and how does it drive compared to when it was stock?
Also do you have any #'s from the drag strip and how does it drive compared to when it was stock?
Holy crap, well that explains it. You hit your peak WHP at 5200-5300rpm, and the power curve was steeply rising, but something happened. You either had a terrible batch of gas, or a gigantic boost leak, because that looks like SEVERE TIMING PULL or a huge loss of boost. That is a very unnatural dropoff at that rpm - normally, it would continue climbing for another 1000rpm then plateau and fall back down starting around 6800rpm. I think your car is making power, but something very wrong is happening at 5200-5300rpm, and it needs to be found soon, because you could be damaging your car each time you boost beyond 5200rpm.
Btw, don't listen to vboy. He has no idea what he's talking about.
Btw, don't listen to vboy. He has no idea what he's talking about.
Oh yeah warr... boost leak. notice how the chart peaks at 22psi and tapers to around 19.5. Seems to be no boost leak to me. That is what he also has in his signature.
It’s obvious that he is pulling timing with nearly a 15hp drop.
My suggestion would be to check your plugs and put the stock BOV back into the car. AFR also would have really helped out with determining your problems.
Also, what kind of gas did you put in your car before the run? Is this a mail in flash or a custom tune? If it was a mail in, maybe you were sent a 93oct map instead of a 91oct map.
It’s obvious that he is pulling timing with nearly a 15hp drop.
My suggestion would be to check your plugs and put the stock BOV back into the car. AFR also would have really helped out with determining your problems.
Also, what kind of gas did you put in your car before the run? Is this a mail in flash or a custom tune? If it was a mail in, maybe you were sent a 93oct map instead of a 91oct map.
Originally Posted by Event-Horizon
Oh yeah warr... boost leak. notice how the chart peaks at 22psi and tapers to around 19.5. Seems to be no boost leak to me. That is what he also has in his signature.
It’s obvious that he is pulling timing with nearly a 15hp drop.
It’s obvious that he is pulling timing with nearly a 15hp drop.
You can see that I mentioned PULLED TIMING twice, but without any other data, there's no way to know for sure what's happening. It is obvious that SOMETHING is wrong, though. His peak of 247 is not indicative of the true power being made.






