Anyone using tork or pressertech tunes?

[Sales@Tork]

Sorry, but your calc is incorrect. You must divide the 371 by. 8 to ascertain the 20% loss from the crank.

Thus, 463x80%=371

SO by your math if our car is making 465whp/80%= would give us 581CHP... is that correct

 

[Kamauxx]

SO by your math if our car is making 465whp/80%= would give us 581CHP... is that correct

I think he said he's estimating it makes 465 at the crank.

 

[Sales@Tork]

Very strange way to do it We have never seen it done this way before

 

[Sales@Tork]

I think he said he's estimating it makes 465 at the crank.

I know but usually you would take your whp divided by drivetrain loss and then add those together for crank.

 

[Kamauxx]

I know but usually you would take your whp divided by drivetrain loss and then add those together for crank.

371 Whp / 80% = 463.

... I'm not sure why you would add those two together but if you did he'd have the first Stinger with over 800 hp.

 

[brancky3]

SO by your math if our car is making 465whp/80%= would give us 581CHP... is that correct

Only if your bone stock dyno is showing a 20% drivetrain loss from 365hp. Really the easiest way to estimate crank is [365] multiplied by [TUNED WHP] divided by [STOCK WHP]. The WHP numbers all need to be done in the same conditions on the same dyno for this to be accurate.

 

[Sales@Tork]

371 Whp / 80% = 463.

... I'm not sure why you would add those two together but if you did he'd have the first Stinger with over 800 hp.

371+20%=800? lol 20% of 371 is about 73 or something

 

[Jonathan Lasich]

Graphs coming shortly. Actual best tuned wheel torque was 430, and whp was 383.

That would mean 458 crank HP using the above method. For just drop-in K&N filters and nothing else--NOT TOO SHABBY AT ALL!!

Anxious to see the results when you have your secondary downpipes installed and tuned for them!

 

[Kamauxx]

Omg

 

[MisterMac]

SO by your math if our car is making 465whp/80%= would give us 581CHP... is that correct

It's math, not my math.

However, that is correct math when we keep our denominators and numerators straight.

581 * 20% = 116 (20% loss from crank)

581 - 116 = 465. (crank minus 20% loss is wheels)

465 wheel hp with a 20% loss (hypothetical and really doesn't matter because we know for certain what the actual hp is at the wheels thanks to the Dyno).

It is truly is elementary....

 

[MisterMac]

Here are the !@%$#! graphs showing Max torque at the wheels of 430.71lbft and Max hp at the wheels of 383.88 on the PRESSERTech tuned ECU. These numbers are only 10hp and 17lbft off of their 2WD tune. I am thrilled! (Stock wheel hp was 318.) Now I look forward to my downpipes and better pulls.

 

[Kamauxx]

Why is the power dropping off so early? Looks like there's no top end.

... or am I reading that wrong?

 

[Doel]

It's math, not my math.

However, that is correct math when we keep our denominators and numerators straight.

581 * 20% = 116 (20% loss from crank)

581 - 116 = 465. (crank minus 20% loss is wheels)

465 wheel hp with a 20% loss (hypothetical and really doesn't matter because we know for certain what the actual hp is at the wheels thanks to the Dyno).

It is truly is elementary....

this is correct. If you have 10 gallon of water and lose 20% of that water, you have 8 gallons of water right?
10x.8=8

Now if you have 8 gallons of water and you're trying to figure out how much water you had originally and you know you lost 20%
?=8/.8
?=10

10= chp
8= whp
.8= drivetrain loss variable

SO by your math if our car is making 465whp/80%= would give us 581CHP... is that correct

If you do it this way, 8x.2= 1.6+8= 9.6 which clearly isn't the 10 we started with, so this doesn't work. This formula really doesn't tell you anything. What you said here is correct, if your car had a 20% drivetrain loss on that dyno (no way to know this, I'm sure you're aware though) then it was making 581 chp.

Unless you have an engine sitting there with identical conditions where you can engine dyno it, then put it back in the car and dyno it again, there is absolutely no way to know what the drivetrain loss is. With all those corrections, they can make that drivetrain loss percentage whatever they want it to be on that particular dyno. People tend to think "drivetrain loss" is a set percentage for each car, it isn't. It's simply the difference between the crank hp and the wheel hp reading of that dyno. It could be anywhere from 40% to 5%.

 

[Jonathan Lasich]

Omg

Most relevant post in this entire thread!!

 

[Doel]

Why is the power dropping off so early? Looks like there's no top end.

... or am I reading that wrong?

it's a weird graph, why is the x axis time and not RPM?

 

[MisterMac]

Why is the power dropping off so early? Looks like there's no top end.

... or am I reading that wrong?

For a number of reasons:

Dyno operator didn't turn off the ESC or stability controls so the nanny's got in the way
Dyno operator failed to realize it is an eight speed tranny, hence 5th gear equals 1:1
Dyno operator didn't realize that by pressing the accelerator pedal too far, he hit the kick down switch, thus changing gears
Dyno learned as much as I did in the process.

It was an unprofessional experience. Yet considering it is a school with a garage that has only been opened a year, it was still beneficial in being able to quantify the power. They've had the Dyno for four months. I don't think they've done many Privately owned autos, just a few tests to train on it.

 

[Kamauxx]

it's a weird graph, why is the x axis time and not RPM?

I'm the first chart I figured time = RPM x thousands . If that's the case it looks like they either let off before 4k RPM or it has little top end.

 

[Kamauxx]

For a number of reasons:

Dyno operator didn't turn off the ESC or stability controls so the nanny's got in the way
Dyno operator failed to realize it is an eight speed tranny, hence 5th gear equals 1:1
Dyno operator didn't realize that by pressing the accelerator pedal too far, he hit the kick down switch, thus changing gears
Dyno learned as much as I did in the process.

It was an unprofessional experience. Yet considering it is a school with a garage that has only been opened a year, it was still beneficial in being able to quantify the power. They've had the Dyno for four months. I don't think they've done many Privately owned autos, just a few tests to train on it.

Okay that makes more sense.

 

[MisterMac]

Okay that makes more sense.

Yeah, it's the middle of the work day and I already need a strong beer while reliving the experience!

 

[Doel]

Yeah, it's the middle of the work day and I already need a strong beer while reliving the experience!

so was it free? if it was free or really cheap I guess that would be ok.