Dyno for PPE down pipes

[BiGMaC]

Thanks Mike! 
I think the stainless are way awesome also... but with my black ride.... and theme, it is as you point out, one of those little details.

It's also frankly an attitude thing... like having confidence because your underwear is clean without a racing stripe!. 

 

[kbeck59]

It's also frankly an attitude thing... like having confidence because your underwear is clean without holes. 

You must not be a RedNeck  ....  L O L    :crazy1: :crazy1:

 

[4DRHTRD]

Thanks to Tom for letting us use his car as a test vehicle and again in the future.

 

[Needmoreboost]

Thanks for sharing.  Did you leave the third shared cat on??

 

[BiGMaC]

Thanks for sharing.  Did you leave the third shared cat on??

Yes, as pictured... saving space for the cutout.Then depending on gains with that I'll have to decide on catbacks vs just tips. 

DJE is installing his DPs today and may have the third cat deleted... Hopefully he'l have a report and pics.

 

[68_GT]

good info all kind of how I expected. Once your're tuneed I'd like to see an overlay of the stock pipes versus catted, and non catted if you're willing to put the stocjers back on for a pull.

How did you get crank hp on a dyno ?

 

[4DRHTRD]

good info all kind of how I expected. Once your're tuneed I'd like to see an overlay of the stock pipes versus catted, and non catted if you're willing to put the stocjers back on for a pull.

How did you get crank hp on a dyno ?

The dyno does a drivetrain loss evaluation by doing 0-60 pulls and coasting down

 

[BlueSHO]

good info all kind of how I expected. Once your're tuneed I'd like to see an overlay of the stock pipes versus catted, and non catted if you're willing to put the stocjers back on for a pull.

How did you get crank hp on a dyno ?

The dyno does a drivetrain loss evaluation by doing 0-60 pulls and coasting down

What % is the drive train loss?

Sent from my DROID RAZR HD using Tapatalk

 

[68_GT]

good info all kind of how I expected. Once your're tuneed I'd like to see an overlay of the stock pipes versus catted, and non catted if you're willing to put the stocjers back on for a pull.

How did you get crank hp on a dyno ?

The dyno does a drivetrain loss evaluation by doing 0-60 pulls and coasting down

interesting never heard of that, and my guess is that's becasue I don't understand why you would dyno that way ? unless your're trying to do a comparrison at the crank to what Ford reports the stock power output to be ? What is the stock power 365hp ? that would be a 40hp gain for the non catted pipes if the correction is accurate ?!

 

[4DRHTRD]

good info all kind of how I expected. Once your're tuneed I'd like to see an overlay of the stock pipes versus catted, and non catted if you're willing to put the stocjers back on for a pull.

How did you get crank hp on a dyno ?

The dyno does a drivetrain loss evaluation by doing 0-60 pulls and coasting down

interesting never heard of that, and my guess is that's becasue I don't understand why you would dyno that way ? unless your're trying to do a comparrison at the crank to what Ford reports the stock power output to be ? What is the stock power 365hp ? that would be a 40hp gain for the non catted pipes if the correction is accurate ?!

The dyno treats torque #'s wrong if looking at to the wheel calculations, they're way off - the line is right, number is wrong. I would assume that he is 20HP over published numbers (underrated) compared to quoted 365.
The key is the comparison #'s not the my dyno vs your dyno #'s scenario. I wanted to get the differences between stock, catted and catless. We'll be going back with Tom's car to compare stock, catted and catless tuned as well.

 

[BiGMaC]

good info all kind of how I expected. Once your're tuneed I'd like to see an overlay of the stock pipes versus catted, and non catted if you're willing to put the stocjers back on for a pull.

How did you get crank hp on a dyno ?

The dyno does a drivetrain loss evaluation by doing 0-60 pulls and coasting down

interesting never heard of that, and my guess is that's becasue I don't understand why you would dyno that way ? unless your're trying to do a comparrison at the crank to what Ford reports the stock power output to be ? What is the stock power 365hp ? that would be a 40hp gain for the non catted pipes if the correction is accurate ?!

The dyno treats torque #'s wrong if looking at to the wheel calculations, they're way off - the line is right, number is wrong. I would assume that he is 20HP over published numbers (underrated) compared to quoted 365.
The key is the comparison #'s not the my dyno vs your dyno #'s scenario. I wanted to get the differences between stock, catted and catless. We'll be going back with Tom's car to compare stock, catted and catless tuned as well.

Absolutely… the delta is the important data… how do the line's positions move in the comparison to each other with changes made.  The car is much different to drive on the low end as described…earlier spooling and hp/TQ spike up.
Just FYI… best catted pull of about 395 was 30crank HP over the advertised 365 and about 12 crank HP over the best stock pull on this dyno… again the delta is the number you want.
After driving it I am sure that on the dyno ECM controls torque limiting access to power.  The car acts like the dyno curves look on the street and not so much what those max numbers say out there at redline. Again we believe that a tune will be synergistic with the pipes.

 

[68_GT]

We'll be going back with Tom's car to compare stock, catted and catless tuned as well.

oh nice,,,,yeah I'll be holding out for that info !

 

[MTaurusSHO]

Great job! Thanks for all this.

 

[black99lightning]

no dyno numbers but I picked went from a best of 13.12 to a new best of 12.98 with the offroad DP's.  I think in stellar weather, 40-50 degrees, I could possibly pick up another tenth.

 

[BiGMaC]

no dyno numbers but I picked went from a best of 13.12 to a new best of 12.98 with the offroad DP's.  I think in stellar weather, 40-50 degrees, I could possibly pick up another tenth.

I think crash has a calculation to get WHP from the two numbers.  Maybe he'll weigh in and give us what they use with his car.

 

[FoMoCoSHO]

Man, your car even looks awesome just sitting on the dyno!

 

[BiGMaC]

Thanks FMCS!... Appreciate it. especially with it as dirty as it was.

The part of those pics I like the best is how I get to see the wheels disappear at speed.  If the tax man isn't to hard on me the tune with DP adjustment will be on in about 2-3 weeks.  Then we'll dyno all again... expecting more from all styles.

 

[FoMoCoSHO]

No problem BigMac...

I am a little disappointed with the catted DP #'s.

However, I have a secret weapon I may deploy on my build to overcome the flow differences.

Stay tuned.

 

[BiGMaC]

No problem BigMac...

I am a little disappointed with the catted DP #'s.

Me too, but the difference seem to be about what we expected... just lower numbers.  The tuned pulls will tell us if we're right.  with no other mods I'm expecting about 5-6 more HP at least.  The feel when driving it tells me if I could hold 1st to 6000-6500rpm we'd have a bolt on rocket.... truth will be told!

Interested to see the SW... mine will be the cutout.

 

[BiGMaC]

Thanks for sharing.  Did you leave the third shared cat on??

Yes, in all cases...