Stealth performance

redwhitenblue · Jan 3, 2017

The alteration to the infection pulse(s) is post ecm so the computer cannot tell. It can see mass airflow, and things like that. However, that's deep into the grey area.

Injectors are an output not an input, so they cannot "sense" the duration of the pulse. It just commands a longer pulse than stock. It's crude, but it works. In my experience mpg is not better and regents are more frequent and you do gain power.

superpsd · Jan 3, 2017

I highly doubt the pcm is datalogging inputs. That would require massive memory space. As long as the box does not trigger a DTC should be good to go. It's crude way but works like way back when I used tricks like increasing fuel pressure or hogging out a MAF tube on gassers to richen AF ratios as I was too poor to afford correct tuning in those days. Sometimes you would have to clock a MAF or play around with adjustments to keep the Pcm happy depending on application. We'll those ways are more crude than a engineered box that has its own controller.

Inline6359 · Jan 3, 2017

My thoughts are even though it leaves no visible imprint in the ecm, and injection pulses are outputs, I would imagine there are other tell tail signs of foul play. Such as egt's, max boost limits being exceeded. Could there be others, I would imagine, but storing an exceeded value wouldn't take much memory if any. Of course this is all speculation, maybe sombody with personal ids experience can chime in.

theplumber · Jan 3, 2017

And do you think this can change the shifting ?
The shifting is a big issue IMO.

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psduser1 · Jan 3, 2017

redwhitenblue said:
The alteration to the infection pulse(s) is post ecm so the computer cannot tell. It can see mass airflow, and things like that. However, that's deep into the grey area.

Injectors are an output not an input, so they cannot "sense" the duration of the pulse. It just commands a longer pulse than stock. It's crude, but it works. In my experience mpg is not better and regents are more frequent and you do gain power.

superpsd said:
I highly doubt the pcm is datalogging inputs. That would require massive memory space. As long as the box does not trigger a DTC should be good to go. It's crude way but works like way back when I used tricks like increasing fuel pressure or hogging out a MAF tube on gassers to richen AF ratios as I was too poor to afford correct tuning in those days. Sometimes you would have to clock a MAF or play around with adjustments to keep the Pcm happy depending on application. We'll those ways are more crude than a engineered box that has its own controller.

Thanks you for clarifying.

Inline6359 said:
My thoughts are even though it leaves no visible imprint in the ecm, and injection pulses are outputs, I would imagine there are other tell tail signs of foul play. Such as egt's, max boost limits being exceeded. Could there be others, I would imagine, but storing an exceeded value wouldn't take much memory if any. Of course this is all speculation, maybe sombody with personal ids experience can chime in.

This was more what I was thinking.

dsberman94 · Jan 3, 2017

Just saw a pic of PSE putting one of these on a '17 earlier.

redwhitenblue · Jan 4, 2017

The only thing that changes with shifting is it defuels a little less. 7ou can feel it but it's not a big deal.

Aaronds · Jan 4, 2017

I just installed this last night on my 2014 F250. Their big selling point is that it won't void the warranty so I really hope the claim is valid. I didn't do anything scientific but I can tell you I normally get 13-14 in town and I reset the dash after install and was getting 18 average on a 50 mile run. Again I didn't do an exact apples to apples but that's my experience. It does add noticeable power and takes away the typical lag. Installing it was just plugging in to the fuel rail and that's it. Hope that helps a little.

redwhitenblue · Jan 5, 2017

The trip computer is wrong after the installation of this device because it alters fuel delivery and fuel consumed post ecu.

Jmuck · Jan 5, 2017

redwhitenblue said:
The trip computer is wrong after the installation of this device because it alters fuel delivery and fuel consumed post ecu.

This.

lincolnlocker · Jan 5, 2017

Aaronds said:
I just installed this last night on my 2014 F250. Their big selling point is that it won't void the warranty so I really hope the claim is valid. I didn't do anything scientific but I can tell you I normally get 13-14 in town and I reset the dash after install and was getting 18 average on a 50 mile run. Again I didn't do an exact apples to apples but that's my experience. It does add noticeable power and takes away the typical lag. Installing it was just plugging in to the fuel rail and that's it. Hope that helps a little.

so it doesn't plug in anywhere else but the fuel rail?

live life full throttle

god bless america and the farmer who feeds your fat ass

Sportchassis06 · Jan 5, 2017

lincolnlocker said:
so it doesn't plug in anywhere else but the fuel rail?

live life full throttle

god bless america and the farmer who feeds your fat ass

Same as a TS performance box,I assume

lincolnlocker · Jan 5, 2017

Sportchassis06 said:
Same as a TS performance box,I assume

so it is just a rail pressure box.. nothing else like it claims?

live life full throttle

god bless america and the farmer who feeds your fat ass

Aaronds · Jan 5, 2017

lincolnlocker said:
so it doesn't plug in anywhere else but the fuel rail?

live life full throttle

god bless america and the farmer who feeds your fat ass

No just the fuel rail and that's it. Hadn't heard anything about them and they offer 30 days money back so I figured it was worth a shot to keep my warranty.