DmaxjonTDI
Member
Does anyone know if there’s a fuel saver metering value for the tdi like exergy Performance are for the GM duramax engine cp4 from this saves the fuel system if the hpfp blows or any lift pumps like fass or airdog?
HPFP question fuel saver?
- Thread starter DmaxjonTDI
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Macradiators.com
Veteran Member
From the hpfp fuel goes to the rail and to the injectors.
The big damage takes place here.
If the tank gets metal shavings its not such a big problem as you can clean it and put a good filter before the new pump.
1 micron filter does the job and its cheap about 20$ , filter head about another 20 and you have problem solved.
The big damage takes place here.
If the tank gets metal shavings its not such a big problem as you can clean it and put a good filter before the new pump.
1 micron filter does the job and its cheap about 20$ , filter head about another 20 and you have problem solved.
Lightflyer1
Top Post Dawg
One of the members here used to make a fitting for these and a filter for the return lines. But since dieselgate I don't think he is making them anymore due to no demand. Might still try contacting him though. Here is his old thread. I managed to get a setup for my 2015 Beetle for after warranty use.
http://forums.tdiclub.com/showthread.php?t=375803
http://forums.tdiclub.com/showthread.php?t=375803
Macradiators.com
Veteran Member
Here it is, simple and effective.
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GreenLantern_TDI
Veteran Member
Where does a guy get one of these?Here it is, simple and effective.
Macradiators.com
Veteran Member
They sell them all over the US. Its a good 1 or 2 micron filter + mounting head. Simple as that.
Pittdawg
Veteran Member
I haven't seen a fuel saver version but Darkside sells the following performance minded upgrade:
https://www.darksidedevelopments.co.uk/products/cp4-hpfp-metering-valve-upgrade.html
Has anyone here utilized this product? A bolt-on upgrade worth 50lbs of torque sounds to good to be true.
https://www.darksidedevelopments.co.uk/products/cp4-hpfp-metering-valve-upgrade.html
Has anyone here utilized this product? A bolt-on upgrade worth 50lbs of torque sounds to good to be true.
ToxicDoc
Veteran Member
It isn't a 50lb bolt-on upgrade. it was installed in their fuel-starved project vehicle.
"Before fitting this upgraded valve on our 3.0 TDI Project the fuel pump was unable to maintain rail pressure at full throttle and in some circumstances limp mode would occur."
Pittdawg
Veteran Member
Yes I read that part and the part saying there was mild gains on a 2.0 TDI. My 3.0 TDI is tuned to just slightly less than their "starved" vehicle at 316 hp so I would expect some gains, maybe not as much as theirs. But I'm really curious as to whether or not my tune would need to be re-calibrated to account for the additional fueling and if this would negatively impact the lifespan of the pump.
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Macradiators.com
Veteran Member
the bigger metering valve needs calibration to work perfectly
you only need it if you are out of fuel , 3.0 pumps can do close to 400
you only need it if you are out of fuel , 3.0 pumps can do close to 400
ToxicDoc
Veteran Member
Can you monitor/record fuel pressure while driving? that would let you know if you would benefit from it.
Pittdawg
Veteran Member
The only monitoring device I have is the Torque app so not sure how well that works with recording fuel pressure. I think I'll pass on this mod as I don't have a local tuner who could re-tune for it and from all my research the stock fueling shouldn't be starving the system at only 316 horses...
andy2
Veteran Member
- Joined
- Sep 24, 2004
- Location
- Bowmanville,Ontario,Canada
- TDI
- 13 Jetta,94 Golf drag car 585bhp,Samurai buggy BHW 300bhp,97 Ram cummins
Here is a video of what the OP is referring to,
https://www.youtube.com/watch?v=ZE1_kV3D18M
Seems like it could be a good fit for any of the CP4 crowd not just duramax.
https://www.youtube.com/watch?v=ZE1_kV3D18M
Seems like it could be a good fit for any of the CP4 crowd not just duramax.