Paccar mx 13 tuning

Gearing does work not power.

 

What rears in it. If you have 3.36 compared to 3.73 or 3.91s its gonna feel like a slug

 

What size tires are on it. If your running 11r24.5 or 11r22.5 you could swap out to lo-pro if your only running 1250-1300 @65. It would be worth it to swap tire sizea next time you need rubber. 530/1850 is some decent power. I see your in the south, not many hills there. I'm betting you have some high rears

 

they do have office in US, and they sell those boxes for $2500

 

Yes indeed, they do have an office in the USA. However, when you search for "MX", you will only find Euro V and Euro VI MX engines. Just as with other chip tuning companies, they do not have anything for the new Euro VI engines that were introduced in July 2017. They have nothing for the US MX engines.

(The Euro classifications for truck engines are written with Roman numerals, so Euro VI. For passenger cars, Arabic numerals are used, so Euro 6. Many companies / people are not aware of this )

 

Digging an old thread up, PDI has ECM tuning for Paccar MX engines now. $1950 tax tag & title.

 

Sucks you can't find what you want. But say, I have a 2018 Pete 579 with a paccar mx 13 and a eaton fuller trans auto shift.

It's slow asf. Sure I can go 75 miles , but the #### truck hits 8 gears and I'm doing 30mph.
It takes forever to pick up speed and I'm just bobtailing getting passed by loaded semis until I hit 8 gear . Is there something I can do?
Gear ratio, or is there a accelerator limiter I need to change? It's too slow , just bought it and bobtailing only for now. Not happy

 

What trans model?


Have the trans setting checked, is it just shifting slow? If its set for economy, it will be slow. Lower gears will get faster if you have the shift calibration changed. Not everyone is concerned with getting there the fastest.