Brew City Boost tuning on the dyno

[superblur]

Not if you take into account where your gonna be after you shift at the peak. Say you shift at 5500 before it falls off, your next gear pull will be in the 4K range with way less power than you would of lost by taking it to the top then shifting and staying in the higher hp power band. If you take the average time under the curve it's ok to drop a few hp at the top if because the average amount of time you'll be in the curve at a higher hp will be more.

So it's important to see the powerband all the way to redline to see. For instance, Cobbs peaks then only lose 15hp to the redline. I'd rather take it to the top and shift and start my next pull in the higher hp range than shift at peak and start my next gear pull low in the rpm range at 40hp less.

Forgive me if I'm wrong but I thought hp only mattered above 5250 rpms. If you dropped to 4k rpms you'd be up 60 ft lbs of torque. The way you worded seemed to completely ignore the torque all together.

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[ECM90]

Forgive me if I'm wrong but I thought hp only mattered above 5250 rpms. If you dropped to 4k rpms you'd be up 60 ft lbs of torque. The way you worded seemed to completely ignore the torque all together.

Yes, I was speaking strictly about hp in the powerband. Either way, I'm just pointing out its nice to see a dyno to redline to evaluate things like I stated. With doing some calculations you could figure out the optimal shift point to stay in the powerband for each gear pull and sometimes those may be shifting over the peak curve.

 

[ECM90]

Also, if you're saying hp ONLY matters above 5250 and your saying you'll have 60 more torque shifting low and beat the guy shifting higher, then by that logic shift at 3000rpm to stay in the highest part of the torque curve. It will give you killer power man haha I would love to race you down a quarter mile track with you staying in 2-3k rpm with all that killer torque. I'm sure you would just smoke me man. Let's race for pinks, just make sure to stay in the highest part of the torque curve.

 

[speedfrk]

Also, if you're saying hp ONLY matters above 5250 and your saying you'll have 60 more torque shifting low and beat the guy shifting higher, then by that logic shift at 3000rpm to stay in the highest part of the torque curve. It will give you killer power man haha I would love to race you down a quarter mile track with you staying in 2-3k rpm with all that killer torque. I'm sure you would just smoke me man. Let's race for pinks, just make sure to stay in the highest part of the torque curve.

HP is a function of torque and rpm, they are not independent of each other. The basic formula is HP=(T*rpm)/5252
That's why you want to keep a flat torque curve as the rpm climbs- or at least have it drop off as little as possible. WHP on a dyno is slightly different since it takes into account the DL losses but the formula is still valid and shows the relationship between power, torque and rpm.

 

[ECM90]

HP is a function of torque and rpm, they are not independent of each other. The basic formula is HP=(T*rpm)/5252
That's why you want to keep a flat torque curve as the rpm climbs- or at least have it drop off as little as possible. WHP on a dyno is slightly different since it takes into account the DL losses but the formula is still valid and shows the relationship between power, torque and rpm.

Yes I fully understand the relationship between hp and torque. I was just being facetious. Torque essentially is measuring the amount of work being done. How "fast" that work is being done is expressed in hp. Which is why you multiply the torque by the revolutions per minute. You may be doing a lot of work down low, but it's not getting accomplished very fast. Hence why I was saying shifting at 2-3k rpm in the superior torque range will not win the race on our platform.

 

[turtleboy]

It was time to get the BCB EBM strapped down for some pulls. Results look great! This is all stock hardware, just our basic Stage 1 tune by Brew City Boost! This tune is what all our customers get out of the box when going with our SCT handhelds, this is a huge improvement over the SCT preloaded tunes that are available but also not as potent as the custom tuning we offer as well. And all our SCT handhelds come with free custom remote tuning.

We still need to get back on the rollers to see the additional gains we can get from the Krona Performance Turboback kit that's recently been installed.

2015 EcoBoost Mustang, manual PP
Stock peak WTQ: 280
Stock peak WHP: 258
BCB_ST1 peak WTQ: 347
BCB_ST1 peak WHP: 294
Gains of 67 WTQ and 36 WHP


BrewCityBoost.com is an SCT Custom Tuner/Dealer. Along with Krona Performance, we can offer top quality hardparts and tuning for the EBM. Hit us up for more info, or email me at: [email protected].

I have an Unleashed Tune now. Its great but i got an AP with Adamtuned and looking forward to see of I feel a difference in power.

 

[BrewCityBOOST]

I have an Unleashed Tune now. Its great but i got an AP with Adamtuned and looking forward to see of I feel a difference in power.

Sounds good. Hit me up if you want to try a Brew City Boost tune too! :cheers:

 

[superblur]

Also, if you're saying hp ONLY matters above 5250 and your saying you'll have 60 more torque shifting low and beat the guy shifting higher, then by that logic shift at 3000rpm to stay in the highest part of the torque curve. It will give you killer power man haha I would love to race you down a quarter mile track with you staying in 2-3k rpm with all that killer torque. I'm sure you would just smoke me man. Let's race for pinks, just make sure to stay in the highest part of the torque curve.

I think you are getting posters mixed up...

But obviously there will be a point where all the torque you would gain by downshifting wouldn't out perform the mechanical advantage you'd have by staying in a lower gear. I never said shift that low regardless

Using hyperbole to prove a point isn't exactly the best argumentative strategy either.

 

[ECM90]

I think you are getting posters mixed up...



But obviously there will be a point where all the torque you would gain by downshifting wouldn't out perform the mechanical advantage you'd have by staying in a lower gear. I never said shift that low regardless



Using hyperbole to prove a point isn't exactly the best argumentative strategy either.

I wasn't getting posters mixed up. Nor was I exaggerating your claim. You literally said hp only counts above 5252, then stated if I were to shift earlier and be at 4K you would have 60 more ft lbs. torque, referring to this as an advantage. I was just pointing out using your logic that if you shift even earlier you would have a 100 more torque. And like you said, "hp doesn't matter below 5252". With your statement the best part of the power-band is 2-3k. Wasn't using hyperbole to prove a point those were your words.

 

[superblur]

I wasn't getting posters mixed up. Nor was I exaggerating your claim. You literally said hp only counts above 5252, then stated if I were to shift earlier and be at 4K you would have 60 more ft lbs. torque, referring to this as an advantage. I was just pointing out using your logic that if you shift even earlier you would have a 100 more torque. And like you said, "hp doesn't matter below 5252". With your statement the best part of the power-band is 2-3k. Wasn't using hyperbole to prove a point those were your words.

You are putting words in my mouth.

I was referring to short shifting before the horsepower dropped off at the top of the rpm range (6k - 7k). No where did I say keep rpms at 2 to 3k.

 

[ECM90]

You pointed out having more torque down low was better than taking it to the top to stay in power. And said Hp only matters above the 5252. By your logic, above 5252, the power nor the torque is higher than 2-3k rpm range. And since hp doesn't matter below 5252 like you said, when looking at the dyno graph the best part is 2-3k using your set logic. I know you obviously didn't say 2-3k range. You just pointed out having 60 more lb of torque at 4K was better than taking it to the top and losing 15hp, that's how this whole discussion started.

Where exactly is this arbitrary line you're setting? So 60 more torque at 4K rpm is better, but 100 more at 3k is not? You said torque was the only factor below 5252.

This whole argument is ridiculous since torque is just multiplied by the rpm to find hp then divided by 5252. You would have the exact same "power" if you have 200lb of torque at 1k rpm as you would with just 100lb of torque at 2k rpm.

 

[Jake]

^ Take it to PM?

Pretty cool to see some decent tuning coming out of Milwaukee. Haven't heard of you guys before seeing you on this forum. :cheers:

 

[superblur]

The original dyno sheet we were talking about had a much more violent fall off in the upper rpms than the sheet you linked. That's where my question came in.

And like I said before, there is obviously a point where the extra torque would lose out to the mechanical advantage of staying in a lower gear.

Edit: sorry for cluttering the thread

 

[ECM90]

The original dyno sheet we were talking about had a much more violent fall off in the upper rpms than the sheet you linked. That's where my question came in.

And like I said before, there is obviously a point where the extra torque would lose out to the mechanical advantage of staying in a lower gear.

Edit: sorry for cluttering the thread

haha we had a big miscommunication then! I completely see why we didn't see eye to eye. The big fall off on this thread is just because the driver let off his foot on the accelerator and it dips way down because of that. The big cliff it takes is not the power being lost its just a incomplete pull. I just wanted to see a pull all the way to the redline, I was showing Cobbs and how it can almost maintain the power and not have a big fall off. This tune can most likely go up to 6.5k rpm with a similar slight drop off. In some cases if the drop off isn't that significant then it would be beneficial to take it up more before shifting in real world application. That's all I wanted to see.

 

[BrewCityBOOST]

Some good back and forth here guys, but please let's stay on topic.

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