RDU Ratio

[ajpturbo]

You want drop thousands?

Best best would be to swap the final drive in the tranny since its an oem part

 

[Auggie]

Nope and I think I will stand pat, at least for now.

    Auggie

 

[FoMoCoSHO]

OK, my second question was "What is the max RPM of these engine"?

    Auggie

It is 6700

 

[Auggie]

Hey thanks FoMo, I was wondering if anyone knew!

    Auggie

 

[ajpturbo]

OK, my second question was "What is the max RPM of these engine"?

    Auggie

It is 6700

You mean they are capable or stock?..auggie you can make it what you want

 

[BiGMaC]

OK, my second question was "What is the max RPM of these engine"?

    Auggie

It is 6700

You mean they are capable or stock?..auggie you can make it what you want

My SHO continued making power to about 6750... Goes a bit higher... The dynos are somewhere here in the thread about dyno for drown pipe install.... And that was before I tuned.

 

[Auggie]

Yes AJ, I would like to know at what RPM to shift at (I could use paddles) for max performance for my completely stock 2015 SHO. Right now it will shift at 5700 in drive. Would shift point RPM in sport be any different?

    Auggie

 

[FoMoCoSHO]

@ Auggie

There is a shift point calculator with some examples in the tranny section.

http://www.ecoboostperformanceforum.com/index.php/topic,5796.0.html

To really be accurate you would need your own dyno sheet but even without you will see that the optimal shift points between PP and nonPP are very different.

 

[ajpturbo]

Bigmac im skeptical on the car still making power at that rpm...any chance there was a bad pickup on the rpm lead to the computer from the dyno?

And auggie the back pressure get so bad at high rpm i cant see much over 6200 being beneficial...watch wastegate duty cycle skyrocket to maintain boost at redline

Sport shouldnt be different...there is basically a pedal multiplier when in sport..thats alot of the reason shifts are held longer and downshifts sooner because you are actually deeper into the pedal...i leave it in S when i race...i think the paddles are stupid

 

[Brucelinc]

Red line is 6250 on the ecoboost.  The rev limiter kicks in at not much more than that.  Maybe some tuners defeat the limiter.  I am glad mine still has it.  I would not wind my engine to 6700.

 

[FoMoCoSHO]

Bigmac im skeptical on the car still making power at that rpm...any chance there was a bad pickup on the rpm lead to the computer from the dyno?

And auggie the back pressure get so bad at high rpm i cant see much over 6200 being beneficial...watch wastegate duty cycle skyrocket to maintain boost at redline

Sport shouldnt be different...there is basically a pedal multiplier when in sport..thats alot of the reason shifts are held longer and downshifts sooner because you are actually deeper into the pedal...i leave it in S when i race...i think the paddles are stupid

It's not just power though, its power plus gear multiplication. PP has a deep 1st and second so even might be making less power, its still making more due to gearing than if you shifted.

I don't have WGDC in my last log, I have turbo wastegate percentage (same?) and there was no spike at 6400+ about 66%.

 

[ajpturbo]

Yeah i think its the same...yeah but fomo...when u do a steady single gear pull through the rpm you can see how it increases up top...want me to have a gander?...did you do a multi gear pull?

 

[FoMoCoSHO]

Yeah, I just looked at my last log for reference, a multi gear pull and I'm pretty sure you have it.

 

[ajpturbo]

Yeah, I just looked at my last log for reference, a multi gear pull and I'm pretty sure you have it.

You need to do one of them Single gear pulls like ive been telling you lol!....4th gear is best but third would do...start at 2k and to redline

 

[BiGMaC]

aj... Anything is possible, but if it had a problem the system didn't warn us and there were 4 sets of dynos... OEM DPs, PPE catted, PPE catted ceramic coated, and PPE noncatted .... Would have taken the same error 4 times at about 1-2 hr intervals for pipe changes.... here's the dynos.
Stock tune.
http://www.ecoboostperformanceforum.com/index.php/topic,2054.msg28342.html#msg28342

Yes, Dan took the limiter off in my tune over 2 years ago, but the dynos were with OEM tune before I ever tuned at all... Rarely go WOT, but put my foot in the right pedal every chance I get.

 

[ajpturbo]

Bigmac you revved to about 7500?...and that was stock tune?...something seems off?