Whipple dyno results

[80FoxCoupe]

Am I wrong? Why would the graph not cross at 5252 other than a scaling issue? I would assume HP is the number the graph is showing correctly per the RPM.

Educate me.

Most things that are scaled, show the scale factor for all elements. I don't see this in the OP or Nawsad's graphs.

You statement didnt make any sense. The rpm is fine, hp and tq read fine. Just scaled differently. No biggie.

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[aggarcia70]

Why was it dyno'ed in 6th gear? Normally its done in the as close to 1:1 gear as possible.

 

[Decible]

It is how it is scaled is all. Yes hp/tq cross at 5252. But most dyno places change the scale when multiple pulls happen to see changes.

 

[DmanDmythDlegend]

Why was it dyno'ed in 6th gear? Normally its done in the as close to 1:1 gear as possible.

My mistake, i forgot the correct gear when he asked me what i wanted it run in

 

[hlfbkd420]

You statement didnt make any sense. The rpm is fine, hp and tq read fine. Just scaled differently. No biggie.

i see my error and stand corrected. Did not compute that the right side numbers didn’t match the left.

back to my hole now

 

[engineermike]

I’m posting this with the OP’s permission.

I looked at the logs and my thoughts are as follows:

- Runs were done in 6th gear, but I don’t think this is a big issue.
- The a/f ratio looks spot-on all the way through the rpm range. Fuel pump duty cycle peaked at 40, with 50 being max. At least from the data shown, it doesn’t look out of fuel to me. Note that fuel lift pressure and gdi data weren’t included in the log. The gdi side was most likely limited, but that’s typical on these.
- The maf flatlined at 86.688 at about 7400 rpm. It looks like it hit the maf limit. This would make me uncomfortable.
- Spark timing peaked around 18 deg, which is about as good as you could expect. One pull picked up knock at 7600 but the other two knocked at 6900 rpm. In my experience, this isn’t unusual for the combination. It’s hard to keep 18 deg spark in there on 93 at high rpm.
- Based on the load and air flow curves, I don’t see evidence of belt slip.
- The weirdness in all the graphs starts at 6500 rpm and I didn’t see anything in the log the definitively explains it.

 

[80FoxCoupe]

i see my error and stand corrected. Did not compute that the right side numbers didn’t match the left.

back to my hole now

No worries. You have a preference to view a dyno sheet with HP and TQ scaled the same. Thats fine. But other than preference, there is no significance to a graph being scaled the same.

 

[Mantis]

I wonder if the weirdness at the end of the run is an issue with the sensors on the dyno itself. Everything looks clean and smooth then just goes haywire like noise.

 

[Dtmlloyd]

What I’m i missing 680 hp and not happy? Stage two is rated at 800 at flywheel? Then take in account driveline loss 10 to 15 percent? Looks good to me?

 

[engineermike]

What I’m i missing 680 hp and not happy? Stage two is rated at 800 at flywheel? Then take in account driveline loss 10 to 15 percent? Looks good to me?

It’s not a bad number, just a few things seem a little screwy.

 

[EFI]

It needs the corn.

The fuel system can't keep up with gasoline demands up high and you think adding in E85 to that will fix things?

 

[80FoxCoupe]

The fuel system can't keep up with gasoline demands up high and you think adding in E85 to that will fix things?

Let the forum build your combo they say...

 

[BlackandBlue]

The fuel system can't keep up with gasoline demands up high and you think adding in E85 to that will fix things?

So are you saying it doesn’t need corn or just in a round about way saying that it will obviously need a fuel system because it already does?

 

[EFI]

So are you saying it doesn’t need corn or just in a round about way saying that it will obviously need a fuel system because it already does?

It doesn't need corn, it will do just fine on 93. Of course E85 will make more power.

But yes, it will definitely need a fuel system with E85 as his current fuel system cannot keep up with the demands of the engine as is with gasoline, much less when E85 needs some 25-35% more fuel flow volume.

 

[jbanh100]

So got her on the dyno today. Not exactly what i hoped for, but solid numbers. Lund reviewed the datalogs and determined fuel was limiting things uptop as car had to pull timing. It was ran in 6th gear. Stage 2, 3.875 pulley, id1050x injectors and a BAP.

If you want some benchmarks or what to expect I basically had the exact same set-up and went 750/600 on E85 Fore LVL2, and ~680/??? on 93, didn't care for 93 cause I planned on running e85 fully.