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Thread: HPFP learnings

  1. #41
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    Default

    Should be a sticky... So many people ask about upgrading.

    Sent from Samsung Note 2 LTE

  2. #42
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    You have asked and I have made it so.

    Sent from my S4 while I'm tappin dat' glass.

  3. #43
    Join Date
    Apr 2010
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    Canberra
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    From MSF...
    This guy had intake + meth, no fuel pump upgrade, and a tune
    His fuel pressure took a dive, car freaked out, piston exploded...

    Click image for larger version. 

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    Last edited by SarcasticOne; 29-07-2013 at 10:23 AM.
    Newbie FAQ My Build Thread
    From stock, to GT3071, to substantially less modded, many lessons learned!
    3" HTP | 100 Cel DP | Autotech HPFP | AP V3 - Self Tuned on E20 | JBR RSB | CPE S2 REM | JBR Shifter Bushings

  4. #44

    Default

    Quote Originally Posted by SarcasticOne View Post
    From MSF...
    This guy had intake + meth, no fuel pump upgrade, and a tune
    His fuel pressure took a dive, car freaked out, piston exploded...

    Click image for larger version. 

Name:	uploadfromtaptalk1375056904823.jpg 
Views:	270 
Size:	47.4 KB 
ID:	14749
    Click image for larger version. 

Name:	uploadfromtaptalk1375056935772.jpg 
Views:	285 
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ID:	14750
    Oh crap!! Definitely glad I listened to the experienced members on here and got one for our car. Don't want any ZZB at our house!


    Sent from outer space via satellite

  5. #45
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    $400 or new block.. Easy choice really.

    Sent from my S4 while I'm tappin dat' glass.

  6. #46
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    was making this up for another thread, seemed more appropriate to put it here and just link it:
    Click image for larger version. 

Name:	FuelSystem.jpg 
Views:	309 
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ID:	15382
    Here's a "quality" *cough cough* MS Paint picture over view of our fuel system

    From the fuel tank, fuel gets pumped via an "in tank fuel pump" (ITFP) at ~50-60psi through the red "line"... that's enough pressure for your port injectors, and it's really all about how much fuel the can flow, rather than the pressure.
    The HPFP then takes this fuel, and pressurizes it up to 1600+ psi... this is where your upgraded HPFP occurs, the standard piston contained within the HPFP is not always capable of pressurising the increased amount of fuel flowing through it, and will drop pressure... this is BAD (read the rest of thread for more information)
    The 1600psi of fuel is then pumped through the yellow "line" to your injectors, where it's squirted into the chamber (can see my really crappy piston in a cylinder there)
    The little green star is where your RON (octane) number comes into effect, the higher this number, the less likely your car is to knocking (or pinking as it is supposed to be know). This occurs when the fuel ignites before it's supposed to, and if it's bad enough, you can bend a rod, or have a piston appear outside your block.

    a few things of note:
    • We will NEVER get upgraded stock replacement Direct Injection injectors... this is for 2 reasons:


    1. We use weird mistubishi injectors
    2. 90% of the DI world has moved onto 2000+ psi, we cant support that


    • The ITFP is perfectly capable of supplying enough fuel for our stock injectors to max our their flow, so no need to worry about upgrading that
    • We can supply enough fuel through stock system to support 300kw at the wheels (assuming meth or e85 mixture, else you hit a point where the engine knocks too much)


    any/all comments/suggestions for ways to add to this are welcome

    EDIT 31/05/2014: since i wrote this, seems corksport and other companies are actively trying to provide us with higher flowing injectors, will see what comes of it.
    Last edited by SarcasticOne; 31-05-2014 at 09:40 AM.
    Newbie FAQ My Build Thread
    From stock, to GT3071, to substantially less modded, many lessons learned!
    3" HTP | 100 Cel DP | Autotech HPFP | AP V3 - Self Tuned on E20 | JBR RSB | CPE S2 REM | JBR Shifter Bushings

  7. Default

    Quote Originally Posted by SarcasticOne View Post
    was making this up for another thread, seemed more appropriate to put it here and just link it:
    Click image for larger version. 

Name:	FuelSystem.jpg 
Views:	309 
Size:	49.7 KB 
ID:	15382
    Here's a "quality" *cough cough* MS Paint picture over view of our fuel system

    From the fuel tank, fuel gets pumped via an "in tank fuel pump" (ITFP) at ~50-60psi through the red "line"... that's enough pressure for your port injectors, and it's really all about how much fuel the can flow, rather than the pressure.
    The HPFP then takes this fuel, and pressurizes it up to 1600+ psi... this is where your upgraded HPFP occurs, the standard piston contained within the HPFP is not always capable of pressurising the increased amount of fuel flowing through it, and will drop pressure... this is BAD (read the rest of thread for more information)
    The 1600psi of fuel is then pumped through the yellow "line" to your injectors, where it's squirted into the chamber (can see my really crappy piston in a cylinder there)
    The little green star is where your RON (octane) number comes into effect, the higher this number, the less likely your car is to knocking (or pinking as it is supposed to be know). This occurs when the fuel ignites before it's supposed to, and if it's bad enough, you can bend a rod, or have a piston appear outside your block.

    a few things of note:
    • We will NEVER get upgraded stock replacement Direct Injection injectors... this is for 2 reasons:


    1. We use weird mistubishi injectors
    2. 90% of the DI world has moved onto 2000+ psi, we cant support that


    • The ITFP is perfectly capable of supplying enough fuel for our stock injectors to max our their flow, so no need to worry about upgrading that
    • We can supply enough fuel through stock system to support 300kw at the wheels (assuming meth or e85 mixture, else you hit a point where the engine knocks too much)


    any/all comments/suggestions for ways to add to this are welcome
    So basically at my 200 atwkw goal I'll have no fuel pump issues because the pressure my stock fuel pump can provide is plenty?

    From what I gathered from your post the only concern is if the engine is consuming more fuel then the pump can provide causing the air/fuel mixture to lean out and make thing go kapow which it won't do until around the 300KW mark?

    Additionally perhaps I missed it but where is explanation of the HPFP acronym? H P Fuel Pump?


    Current mods:
    CorkSport SRI, TIP & Airbox
    Cobb Access Port

  8. Default

    High pressure fuel pump.

    Makes sense right? As its the point where its bumped from 60psi to the 1600 mark.

    There is an entire stickied acronymn thread with basically all terms commonly used

  9. #49
    Join Date
    Oct 2012
    Location
    Brisbane Southside
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    527

    Default

    Quote Originally Posted by son of eevil View Post
    So basically at my 200 atwkw goal I'll have no fuel pump issues because the pressure my stock fuel pump can provide is plenty?

    From what I gathered from your post the only concern is if the engine is consuming more fuel then the pump can provide causing the air/fuel mixture to lean out and make thing go kapow which it won't do until around the 300KW mark?

    Additionally perhaps I missed it but where is explanation of the HPFP acronym? H P Fuel Pump?
    You will need a HPFP for 200 mate, the in tank fuel pump will handle it but not the High pressure fuel pump
    Cheers

    Grumpy

    Tuned with
    By Alex...........

  10. Default

    I've also heard the HPFP will cause CEL lights, is that correct?

  11. Default

    Quote Originally Posted by son of eevil View Post
    I've also heard the HPFP will cause CEL lights, is that correct?
    No indeed it shall not. As far I am aware.
    Most people on this forum including myself have upgraded hpfp... no cel.

  12. #52
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    Oct 2009
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    Oh Jesus, I think my car was pinking the other day, @SarcasticOne, tell me what to do...

    Sent from my GT-N7105 using Tapatalk 2

  13. #53
    Join Date
    Oct 2012
    Location
    Brisbane Southside
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    Quote Originally Posted by yeldarb View Post
    oh jesus, i think my car was pinking the other day, @sarcasticone, tell me what to do... :d

    sent from my gt-n7105 using tapatalk 2
    lmfao.............
    Cheers

    Grumpy

    Tuned with
    By Alex...........

  14. #54
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    Jun 2009
    Location
    Newcastle
    Posts
    1,413

    Default

    Lol@ pinking! You wish Sam!

  15. #55
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    Apr 2010
    Location
    Canberra
    Posts
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  16. Default

    So will a SRI and Cobb AP require a HPFP mod?

  17. #57

    Default

    Quote Originally Posted by son of eevil View Post
    So will a SRI and Cobb AP require a HPFP mod?
    Most likely no. Once you go with a downpipe and/or Stage2 on Cobb is when you see problems. However the only way to be sure is the LOG a bunch of runs in hot/cold weather and look at the pressure.
    SG9 XT: VF34 P20, Tomei headers, STI intercooler HSD coilovers, Brembos and much more...

  18. #58
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    Apr 2010
    Location
    Canberra
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    Quote Originally Posted by son of eevil View Post
    So will a SRI and Cobb AP require a HPFP mod?
    http://www.ozmpsclub.com/forum/ecu-m...tml#post208213
    Newbie FAQ My Build Thread
    From stock, to GT3071, to substantially less modded, many lessons learned!
    3" HTP | 100 Cel DP | Autotech HPFP | AP V3 - Self Tuned on E20 | JBR RSB | CPE S2 REM | JBR Shifter Bushings

  19. #59
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    Nov 2008
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    North side, Vic
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    Quote Originally Posted by son of eevil View Post
    So will a SRI and Cobb AP require a HPFP mod?
    Read the accessport FAQ thread!
    Plenty of info there.

    Sent from my GT-I9505 using Tapatalk

  20. #60
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    Quote Originally Posted by son of eevil View Post
    So will a SRI and Cobb AP require a HPFP mod?
    Have you read the recommended hardware for each Stage on the Cobb Website?

    They tell you there that new internals aren't required. Which would be fine if that's where you're leaving the car. But most go further, so the new internals become good insurance against "hole in block" syndrome.
    Redbull is DEAD!!

    Long live the Redbull ... V2



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