CP3 fuel pump upgrade thread

Garrison

Veteran Member
Joined
May 7, 2017
Location
Charlotte
TDI
Stg 3 - 2011 JSW
Was this for your GTD22xx?
Wondering if their inability also runs through the CR170 range, or, if it's all their offerings

fwiw, i was able to obtain a refund from malone after retuning with @Xtremefunky

what helped me in this matter is i had irrefutable proof their tune wasnt functional / working correctly. i simple submitted the logs from my malone tune, then logs from my xtremefunky tune, and expressed my concerns+desire for a refund.

dont get me wrong, malone/tunezilla are great people on the people side of the operation. it's just a damn shame their tuning isnt up to par with the customer service
 

tjg

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Feb 8, 2019
Location
Ft. Cavazos, TX
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'13 TDI A3, '14 TDI Sportwagen
So I've got a Darkside CP3 with malone stage 3 on my A3 and a Darkside CP3 with malone stage 2 on my sportwagen and haven't had any issues. Still interested in that filter hose re-routing. I'll be keeping an eye on your updates.
 

lemoncurd

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May 24, 2019
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Eastern CT
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2013 CJAA GTB2266
So I've got a Darkside CP3 with malone stage 3 on my A3 and a Darkside CP3 with malone stage 2 on my sportwagen and haven't had any issues. Still interested in that filter hose re-routing. I'll be keeping an eye on your updates.
ye ol "works for me" defense.. some people will just never learn sadly :/

glad it "works" for you!
just for curiosity, go log "015, 140, 141" during 1.2k to redline fourth gear WOT pull :)
 

tjg

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ye ol "works for me" defense.. some people will just never learn sadly :/

glad it "works" for you!
just for curiosity, go log "015, 140, 141" during 1.2k to redline fourth gear WOT pull :)
🤷‍♂️

Didn't realize it was a measuring contest....

I provided the context for my CP3 being a darkside stage 1. I did a CP3 remap with Malone for the A3, logs out to redline. Once again no issues.

I get there are some unhappy Malone customers, but for every one of them, there's at least one who's satisfied and doesn't say anything
 

lemoncurd

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Eastern CT
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2013 CJAA GTB2266
🤷‍♂️

Didn't realize it was a measuring contest....

I provided the context for my CP3 being a darkside stage 1. I did a CP3 remap with Malone for the A3, logs out to redline. Once again no issues.

I get there are some unhappy Malone customers, but for every one of them, there's at least one who's satisfied and doesn't say anything
not a measuring contest, just a bit of work to maybe open your eyes.

if your tune is anything like others i have seen, youll notice some glaring issues in that log.

like cylinder torque being different from engine-reported-torque

dont see an issue with those 2 torque values not aligning? let me help paint you a picture, the ABS, EPS, TSC, ASR, and ACC (if equipped) all listen to the ENGINE reported torque. now if your ACTUAL torque (IE, the one in the cylinders) is different, then you have a mismatch between real world and ECU-model. which is a BIG ISSUE.

dont believe me?
here is a malone "stage 4" tune
see the problem?

now for a real "stage 4" tune

notice anything? :)


at the end of the day, tune with who you want. if it works for you and your needs, great! im only trying to educate and inform. because i see it all too often, people THINK they have good tuning with malone, when infact they do not
 

Garrison

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May 7, 2017
Location
Charlotte
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Stg 3 - 2011 JSW
Solid evidence @lemoncurd

Do you notice any difference in the harmonics, while driving, or at idle? Or is this more like a silent killer in high torque applications
 

lemoncurd

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Location
Eastern CT
TDI
2013 CJAA GTB2266
Solid evidence @lemoncurd

Do you notice any difference in the harmonics, while driving, or at idle? Or is this more like a silent killer in high torque applications
with engine torque properly adjusted, youll notice traction control works better, the DSG shifts better, and torque steer comp works as intended.

lying to the DSG about engine torque is a dangerous game imo. it needs to determine if youre accelerating or what your next move is. with a fudged torque calculation in ECU, youre blinding or misleading the DSG

overall i noticed my car was smoother, and more OEM+ like than with malone. malone was very jerky in my car
 

McGuirk

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Florida
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Audi A3 TDI, 2012 Golf TDI , 2014 GTI to TDI swap
Well aware of their lackluster tuning at this point. Problem is hindsight is 20/20 and my tuning selection is said and done for now. Don't feel like dropping more money at the moment on more tuning. Hoping this is a permanent fix instead. My only problem with this is what are the drawbacks of routing the fuel this way? Was talking to Isaac from Fisher Motorworks and he was saying there are check valves in the head of those filter canisters and this might have some drawbacks but he was going to think on it and get back to me.
Well been about a week. Been driving the car a lot. No issues whatsoever. No hint of low rail pressure, even on WOT in sport mode. Still no word about whether routing the fuel lines this way is of any concern on a cp3 with pre boost pump removed modded car.
 

Harbinger_1

New member
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Apr 17, 2024
Location
MI
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2012 mt
Did my tb, wp service, 400a alternator and finally a cp3!!! Have had a cr170, buzzken dp and Malone 3.5 tune for about 6-7 years now. Did the fluidampr balancer as well. With the balancer the car doesn’t even feel like a diesel anymore. Idle is crazy smooth!!! @lemoncurd, routed fuel hoses like you did and it’s awesome!!! Did all the work myself and wasn’t that bad outside of bending the fuel line. Thanks to everyone for the contributions that saved me over $1000 in labor!!! 188k miles if anyone was wondering. Have a r400 body kit to go on this year when it warms up.
 

coolusername

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Joined
May 4, 2022
Location
Orange, CA
TDI
2012 Jetta Sportwagen TDI
Did my tb, wp service, 400a alternator and finally a cp3!!! Have had a cr170, buzzken dp and Malone 3.5 tune for about 6-7 years now. Did the fluidampr balancer as well. With the balancer the car doesn’t even feel like a diesel anymore. Idle is crazy smooth!!! @lemoncurd, routed fuel hoses like you did and it’s awesome!!! Did all the work myself and wasn’t that bad outside of bending the fuel line. Thanks to everyone for the contributions that saved me over $1000 in labor!!! 188k miles if anyone was wondering. Have a r400 body kit to go on this year when it warms up.
Do you have more info about this balancer? This is the first I'm hearing of it. Is it for cars with stiffer engine mounts or something?
 

Cuzoe

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May 24, 2017
Location
Los Angeles
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MK7 Golf S
Do you have more info about this balancer? This is the first I'm hearing of it. Is it for cars with stiffer engine mounts or something?
This is the main website for it... https://fluidampr.com/

They make units for a range of engines, gasser and diesel. Without falsely suggesting personal experience the claim, that seems to be true, is better damping of the engine rotating mass. Theory then follows that you can safely rev higher (if your engine is built/tuned for that) but also smoother operation through the rev range. That could translate to any number of things... Better efficiency (more power, if you will), longer life, etc.

I'm not sure they specifically market it for cars with stiffer engine mounts. The intended benefits exist no matter the stiffness of the engine mounts. But if you have stiffer engine mounts a smoother running engine could be a good thing for passenger comfort. I don't know who can say whether a fluidampr would fully offset the added NVH of stiffer engine mounts on a diesel. Have to think it can't hurt though.
 

p.e.fletcher

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Tallahassee, FL
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2013 Passat TDI SE/2011 Golf TDI
Do you have more info about this balancer? This is the first I'm hearing of it. Is it for cars with stiffer engine mounts or something?
I think whitbread machines it to fit on a CJAA CR engine.
He does and he also has a version of his billet lower rear cover to go with it (fluidampr version without rib for stock pulley).

I run them both on my MK6 Golf (6-speed) with the Vibra-technics engine/trans mounts and subframe + dogbone bushings with an 1100rpm idle.

Car is planted, wheel hop is non-existent and I dig it, but it’s still stiff as hell. AFAIK, Fluidampr is more about keeping bottom end happy when increasing power levels by reducing harmful torsional vibrations in crankshaft than NVH, although might still help a bit.
 

Harbinger_1

New member
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Apr 17, 2024
Location
MI
TDI
2012 mt
Do you have more info about this balancer? This is the first I'm hearing of it. Is it for cars with stiffer engine mounts or something?
Haven’t put my cts stage one mounts on yet but have read it’s better when the fluidampr is installed with them. Got mine from whitbread but I think he sent me the wrong lower timing belt cover cause the bolts caught my balancer and the car wouldn’t turn over so I had to put stock cover back on in the meantime.
 

Tuheeden

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Sep 18, 2022
Location
North Carolina
TDI
2013 & 2014 Jetta sportwagon
Do you have more info about this balancer? This is the first I'm hearing of it. Is it for cars with stiffer engine mounts or something?
I have this one
whitbreadperformance.com/collections/tdi/products/tdi-fluidampr

A bit pricey but on my 6 speed manual it really smoothed out the idle. I still have the DMF but this is a must if you do a SMF
 

Bryan111

Member
Joined
Oct 15, 2024
Location
Plano
TDI
2010 golf 2 door
just rerouted my OEM canister fuel lines. looped the returns together, and piped the CP3 return directly into the tank return.

effectively making the OEM canister/filter an inline filter
i was able to bleed with VCDS this way!


just rerouted my OEM canister fuel lines. looped the returns together, and piped the CP3 return directly into the tank return.

effectively making the OEM canister/filter an inline filter
i was able to bleed with VCDS this way!


What do you think about using one of those CAT 1r-0750 filter adapters??
 

lemoncurd

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Joined
May 24, 2019
Location
Eastern CT
TDI
2013 CJAA GTB2266
What do you think about using one of those CAT 1r-0750 filter adapters??
my personal opinion is "meh"
the stock filter setup has done well for me over the last 268k miles. i see no reason to change it
 

Bryan111

Member
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Oct 15, 2024
Location
Plano
TDI
2010 golf 2 door
my personal opinion is "meh"
the stock filter setup has done well for me over the last 268k miles. i see no reason to change it
But do you think it would work with the set up you have? I recently got my cp3 installed and planing to reroute the fuel lines like you did I was thinking if it would be easier to change the fuel filter with one of this adapters, I would just have to spin the filter instead of doing the 5 torx every time, plus the 1r-0750 is a 2 micron filter
 

McGuirk

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Florida
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Audi A3 TDI, 2012 Golf TDI , 2014 GTI to TDI swap
What do you think about using one of those CAT 1r-0750 filter adapters??
I'm running a cat 0750 in place of my stock filter using a Nicktane adapter. Works really well. Solved all my low rail pressure issues with my cp3. Might have been solvable with tuning but don't have the time/money currently to find out.
 

Bryan111

Member
Joined
Oct 15, 2024
Location
Plano
TDI
2010 golf 2 door
I'm running a cat 0750 in place of my stock filter using a Nicktane adapter. Works really well. Solved all my low rail pressure issues with my cp3. Might have been solvable with tuning but don't have the time/money currently to find out.
Do you have any pictures of your set up?
 

McGuirk

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Audi A3 TDI, 2012 Golf TDI , 2014 GTI to TDI swap
Do you have any pictures of your set up?
Tank fuel incoming to filter in, filter out to CP3, rail return to tank fuel return using barbed male to male fitting. This is a CBEA but routing would be exactly the same for a CJAA. Been running this way since mid NOV 20204. I drive a lot and not one low rail code. Car is smooth as silk 176000mi. Pulls well when I want and sips fuel when I drive it nice. Get 45 - 50 mpg on my morning commute and about 38 -42 on my way home in traffic.


 
Last edited:

Bryan111

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Oct 15, 2024
Location
Plano
TDI
2010 golf 2 door
Tank fuel incoming to filter in, filter out to CP3, rail return to tank fuel return using barbed male to male fitting. This is a CBEA but routing would be exactly the same for a CJAA. Been running this way since mid NOV 20204. I drive a lot and not one low rail code. Car is smooth as silk 176000mi. Pulls well when I want and sips fuel when I drive it nice. Get 45 - 50 mpg on my morning commute and about 38 -42 on my way home in traffic.


Yes, this is exactly what I was thinking just different adapter but same idea. So I still have my intermediate pump, been driving the car for like 1000 miles now since the cp3 install, no codes or anything like that
Would you recommend deleting the intermediate pump with this filter set up?
 

lemoncurd

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Eastern CT
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2013 CJAA GTB2266
Yes, this is exactly what I was thinking just different adapter but same idea. So I still have my intermediate pump, been driving the car for like 1000 miles now since the cp3 install, no codes or anything like that
Would you recommend deleting the intermediate pump with this filter set up?
woah woah woah, you have the engine bay electric fuel pump fitted with a CP3?

that is generally a no go with the pumps provided in the kits you find online.

post a photo of your CP3, specifically the back of it NOT driven by the timing belt
 

Bryan111

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Oct 15, 2024
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Plano
TDI
2010 golf 2 door
woah woah woah, you have the engine bay electric fuel pump fitted with a CP3?

that is generally a no go with the pumps provided in the kits you find online.

post a photo of your CP3, specifically the back of it NOT driven by the timing belt
It’s dark outside but it’s the kit from darkside, I got it installed by a shop and I actually ask that question, if they were going to remove that pump but they told me they wouldn’t recommend it. Should I take it off???
 

McGuirk

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Audi A3 TDI, 2012 Golf TDI , 2014 GTI to TDI swap
It’s dark outside but it’s the kit from darkside, I got it installed by a shop and I actually ask that question, if they were going to remove that pump but they told me they wouldn’t recommend it. Should I take it off???
The darkside kit pumps have the built in lift pump so the aux pump should be removed. If it were the BMW cp3 pump it would need the aux fuel pump in place because those cp3 pumps don't have the built in lift pump.
 

lemoncurd

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2013 CJAA GTB2266
It’s dark outside but it’s the kit from darkside, I got it installed by a shop and I actually ask that question, if they were going to remove that pump but they told me they wouldn’t recommend it. Should I take it off???
you have the typical CP3 used on these swaps. meaning it has a gear driven LPFP on the back.

remove the engine bay auxiliary fuel pump.

the CP3 with the built in gear pump only requires 5-10psi of head/feed pressure. that engine bay auxiliary pump provides about 100psi which is required for HPFP's that lack the built in LPFP (CP4, CP3 from BMW, etc)
 

Bryan111

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Oct 15, 2024
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Plano
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2010 golf 2 door
The darkside kit pumps have the built in lift pump so the aux pump should be removed. If it were the BMW cp3 pump it would need the aux fuel pump in place because those cp3 pumps don't have the built in lift pump.
Where did you get your filter adapter from I tried nicktane webside but they don’t have it
 

Bryan111

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Oct 15, 2024
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Plano
TDI
2010 golf 2 door
you have the typical CP3 used on these swaps. meaning it has a gear driven LPFP on the back.

remove the engine bay auxiliary fuel pump.

the CP3 with the built in gear pump only requires 5-10psi of head/feed pressure. that engine bay auxiliary pump provides about 100psi which is required for HPFP's that lack the built in LPFP (CP4, CP3 from BMW, etc)
Great, thanks for all the info I would remove the auxiliary pump and try to do the filter adapter at the same time. It should be the same process to prime the system right? I use obd11
 
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