HPFP necessary?

Discussion in 'Generation 4 - Performance Upgrades' started by MHW100, Oct 6, 2019.

  1. MHW100

    MHW100 SHO Member

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    I'm on a GH tune, GH intercooler, PPE called DP, etc and not going meth or E fuel. Is there any reason to upgrade the fuel pump?
     
  2. SM105K

    SM105K Streetlight Grand Prix Champ

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    It truly depends on your goals.

    I have a full bolt on SHO and I run a pretty hot E30 tune on the stock HPFP. Fuel pressure is at acceptable levels for my set up.

    Yes the upgraded HPFP is a good investment, is it truly needed? No. If it was no tuner would offer an E30 tune with the stock HPFP and deem it safe.
     
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  3. MHW100

    MHW100 SHO Member

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    No meth or E30 so then I assume it's not needed for any performance gains or safety reasons.
     
  4. ridered74

    ridered74 SHO Member

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    The only tune that "needs" it for just a base tune is LMS, and even with them my car was fine until I added downpipes.
     
  5. Jordan_R

    Jordan_R Stock Block Ready To Knock...er..Rock

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    Not really correct. Huge gains to be had with an upgraded hpfp over the stock one in any fuel option. Stock one in mild temperatures is maxed out at 15 psi while an upgraded hpfp can support well over 18psi (basically stock limit for stock turbos) so while you don't gain any timing advantages because timing the same specific fuels you can run much more boost especially with the upgraded intercooler in the mix
     
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  6. MHW100

    MHW100 SHO Member

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    Interesting discussion. I'll see what Matt has to say about it. Thanks all.
     
  7. SM105K

    SM105K Streetlight Grand Prix Champ

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    Unless you are pushing it, then it isnt needed.
     
  8. OmaHahn

    OmaHahn SHO Member

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    I literally just posted this on another thread....

    Matt's Reply to me:
    "I really hate doing e30 tunes on stock pumps because you have to be extremely sure on your mix at all times. installing a sensor would be the minimum I’d do if it were me. The AO and e30 tunes will be different files. The issue is fuel pressure… I don’t feel comfortable… look at your fuel pressure on shift boost spikes and let me know what you think. The volume of the stock pump isn’t enough to push much harder than I do already with your AO."
     
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  9. MHW100

    MHW100 SHO Member

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    Bit the bullet. XDI 35 with FedEx and GH sending revised tune. Matt said he can get some more power out of my '18 on regular fuel.

    Expensive upgrade but there is also some piece of mind going into the colder months.

    Rationalized that I might as well go for it in case I lose my mind and wallet and order upgraded turbos.
     
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  10. SHOdded

    SHOdded SHO Member

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    :whip::whip::whip:
     
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  11. MHW100

    MHW100 SHO Member

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    Nice chunk of heavy metal.

    IMG_20191023_1304402.jpg
     
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  12. 802SHO

    802SHO FULL SEND

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    I need that! Good call on getting it!
     
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  13. 76FoMoCo

    76FoMoCo SHO Member

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    looks Dead Sexy! let us know if you picked up some more horses!
     
  14. MHW100

    MHW100 SHO Member

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    Matt said 20 hp. I can't get ethanol so stuck on gas.
     
  15. Jordan_R

    Jordan_R Stock Block Ready To Knock...er..Rock

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    It's worth it! I wouldn't go back to the stock HPFP if someone paid me.
     
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  16. MHW100

    MHW100 SHO Member

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    This car feels much more powerful now. No dyno, no track results just seat of the pants harder pulling all the way through now. Maybe placebo but I don't think so. Matt said 20 hp on gas but it feels more than that. Way to go Matt!
     
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  17. SuperPete

    SuperPete SHO Member

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    What did you pay for it delivered from GH?
     
  18. MHW100

    MHW100 SHO Member

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    $1,600+tax
     
  19. SuperPete

    SuperPete SHO Member

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    Thanks.
    SO you got about 20HP on 93 gas, thats nice, can you imagine e30...
     
  20. MHW100

    MHW100 SHO Member

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    It feels more so it's either a placebo or everything is just operating better with all the other parts e.g. PPE DP etc
     
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