Another USP E85 ethanol conversion on the dyno!!
#40
Chris,
Fantastic numbers. Quick question -- how close are we to having a usable 'flexfuel' style setup (if at all?). I'd love to have the ability to run e85, I have a pump a mile away... but that's the only station for like 100 miles in any direction. I'd probably run out of gas before I could get to another, and it certainly wouldn't be easy to take a trip anywhere.
Even if the answer were to reflash via a cable that would probably work well enough... thoughts?
Fantastic numbers. Quick question -- how close are we to having a usable 'flexfuel' style setup (if at all?). I'd love to have the ability to run e85, I have a pump a mile away... but that's the only station for like 100 miles in any direction. I'd probably run out of gas before I could get to another, and it certainly wouldn't be easy to take a trip anywhere.
Even if the answer were to reflash via a cable that would probably work well enough... thoughts?
#41
Chris,
Fantastic numbers. Quick question -- how close are we to having a usable 'flexfuel' style setup (if at all?). I'd love to have the ability to run e85, I have a pump a mile away... but that's the only station for like 100 miles in any direction. I'd probably run out of gas before I could get to another, and it certainly wouldn't be easy to take a trip anywhere.
Even if the answer were to reflash via a cable that would probably work well enough... thoughts?
Fantastic numbers. Quick question -- how close are we to having a usable 'flexfuel' style setup (if at all?). I'd love to have the ability to run e85, I have a pump a mile away... but that's the only station for like 100 miles in any direction. I'd probably run out of gas before I could get to another, and it certainly wouldn't be easy to take a trip anywhere.
Even if the answer were to reflash via a cable that would probably work well enough... thoughts?
#42
Thanks for the tip -- I'll try to dig up what I can on those cars. At least KPGs is a 996, but it's heavily modded so who knows what EVOMS has in there for a tune
#44
Chris, I know you and EPL make great products and I am not doubting or in any way question your ability and or that your cars are FAST as hell.
I am seeing though that dynojets typically have this "flat" HP curve. Doesn't look very realistic.
Here is my personal car with the BPU upgrades on K24s dynoed years ago. Dynoed by a third party. Same flat(ish) HP curve... seems to be a hallmark of dynojets. Is this the result of the dynoject not being a load dyno? This could also be the result of tuners not really tuning out but welcoming the torque spike which may result in this flat HP curve.
What are your thoughts on this?
I am seeing though that dynojets typically have this "flat" HP curve. Doesn't look very realistic.
Here is my personal car with the BPU upgrades on K24s dynoed years ago. Dynoed by a third party. Same flat(ish) HP curve... seems to be a hallmark of dynojets. Is this the result of the dynoject not being a load dyno? This could also be the result of tuners not really tuning out but welcoming the torque spike which may result in this flat HP curve.
What are your thoughts on this?
Last edited by Turbo Fanatic; 09-01-2011 at 10:19 PM.
#45
Chris, I know you and EPL make great products and I am not doubting or in any way question your ability and or that your cars are FAST as hell.
I am seeing though that dynojets typically have this "flat" HP curve. Doesn't look very realistic.
Here is my personal car with the BPU upgrades on K24s dynoed years ago. Dynoed by a third party. Same flat(ish) HP curve... seems to be a hallmark of dynojets. Is this the result of the dynoject not being a load dyno? This could also be the result of tuners not really tuning out but welcoming the torque spike which may result in this flat HP curve.
What are your thoughts on this?
I am seeing though that dynojets typically have this "flat" HP curve. Doesn't look very realistic.
Here is my personal car with the BPU upgrades on K24s dynoed years ago. Dynoed by a third party. Same flat(ish) HP curve... seems to be a hallmark of dynojets. Is this the result of the dynoject not being a load dyno? This could also be the result of tuners not really tuning out but welcoming the torque spike which may result in this flat HP curve.
What are your thoughts on this?
I don't think there is any issue with the dyno on either setup, just that it appears your setup has been pushed a bit harder (more aggressive boost/timing) nearer to redline, or your turbos are simply more efficient (they are K24's).
Just a guess, though, since I don't know your tune particulars, but your chart looks more typical, with hp kind of climbing as rpms increase.
When I look at the original chart, I see torque peak at about 4600rpm, and peak hp occurring at about 5000rpm, when in a fully tuned setup, peak hp typically occurs nearer to redline.
This leads me to believe there is a bit more left in this setup at the big end, unless the turbos are running out of breath.
Torque spike has nothing to do with a flat HP curve.
That spike can be tuned in or out.
Personally, I always tune to increase torque as redline approaches, but that may not have been possible in this setup (or he is keeping the good stuff for later!)
I'm also guessing he tuned the car to limit torque around 4600 and keep that engine together.
If torque drops hard as rpm's increase, then the hp curve will tend to "flatten" out.
The car goes from 630 torque at 4600 to about 450 torque at 6500rpm, losing nearly 200 lbs in a 2000rpm span.
In a dyno run, the most "force" is being applied at the torque peak.
As rpms increase, "force" drops (not "speed" or "rpm") and the resultant hp curve drops as well.
That's why, if a car can be tuned to increase torque (force) as rpm increases, the result will be a climbing hp curve.
The car should still be a performer, but has a lot left on the table with a better turbocharger.