TTRS LPFP

[swansem]

Is the ttrs lpfp a direct plug and play for the MK5 or would I need to swap out the factory PWM module as well?I know there’s an extra line that would need to be sealed/blocked off but aside from that? Is there ecu coding required? Saw some people getting the PM4 module from torqbyte to go along with it but seeing the price has discouraged me lol so wondering if it’s really necessary to swap that out or if there’s other/cheaper options out there. Trying to search online but can’t find a clear answer on this, can someone please shine some light ?

[ROH ECHT]

Why are you considering these upgrades? Is your Big Turbo build starving for more fuel?

My genuine original tank-pump worked fine with its K04 w/HPFP upgrade and tuning.
The rail pressure target, within the tune, had a max of 140 bar.

I did once try a TTRS-like upgrade...and with it I also added a PM3. Only, that pump lasted under two years; only being able to produce 1.2 bar at full load; at its end. So I returned to using the genuine LPFP and sold the PM3.

If not yet done, you might consider opening the HPFP's inlet "restrictor" to 5mm. This should drop the work-load % of the LPFP. Most report seeing the load % drop from 91.8% to near 80% (±4%).

:


Bamboo fitting restrictor location is on the Left...and Banjo Bolt restrictor location is on the Right; at the beginning of the metal tube leading to the HPFP.

[pudding]

Yeah the stock PWM box will overheat with a TTRS LPFP as it draws a lot more current, so an aftermarket controller is required, or the TTRS one.

The base fuelling map will need adjusting as well to account for the extra flow.

But as above, it's only really needed for big turbo builds.  Most folk are fine with the stock LPFP running TTE420 turbos.