Roush s/c low power on dyno

[RubyRedRaptor]

Hi,
I installed a phase 2 roush sc kit to my 2014 over Xmas.
I didn't have access to ford scan tool to load the roush tune, so I opted for a custom team jdm tune I could load with my SCT.
I was a bit disappointed with the performance gain with the s/c.
I took it to a dyno to give it a few runs, more just to check tune was safe.
I had max power at only 372hp? At 6.7psi.

Is this normal? Team jdm claim 500rwhp from there kit/tune.

I'm not sure of what psi they should run at but assumed it would be 8psi.

Does anyone have any idea of what could be wrong?
Mechanical or tune?
Could the bypass be malfunctioning?

I've attached the last dyno sheet.
This is a 93 oct tune too

Please help

 

[torrin]

What else do you have on it beyond the SC? Did you add exhaust, CAI, etc? What else have you done to let it breath better?

 

[RubyRedRaptor]

Roush cat back
Roush cai

Everything that came with there phase 2 off-road pack

 

[mike.s]

Definitely seems low. I had 330 stock and 450 when my Whipple was first installed. With JDM tune, I was around 485. Roush should be around the same.

 

[RubyRedRaptor]

Yeah
So why is the question
What boost is stock for the 75mm pulley?

 

[mike.s]

Is the line on the bottom your before dyno? Looks like around 240.

 

[RubyRedRaptor]

No that's the psi graph

 

[jokerz]

Yeah
So why is the question
What boost is stock for the 75mm pulley?

Are you sure it's just not the Dyno selection.

I have had customers Dyno there cars on two different types of Dynos and one Dyno read 806 on a Dyno pac and then went to a dynojet and it read 706.


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[MTF]

They didn't do a base run before mods?

Boost can vary by 1 to 2 lbs. depending on exhaust and SC pulley size.
But 8 is the baseline.
To me, it seems they did not setup the parameters correctly.
Most dyno shops always display HP & Torque with a boost graph on the bottom for superchargers.

You may want to invest in a OBD11 adapter and a phone app.
Our PCM is capable of displaying HP & Torque at the flywheel or rear wheels and Boost plus a lot more.
Most importantly the fuel trims!!! Short & Long
This way you'll know if its installed correctly.

 

[jokerz]

Normal Dyno graph for reference


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