HPFP necessary?

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

  1. MHW100

    MHW100 SHO Member Supporting 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 Land Yacht Pilot Supporting Member

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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.
     
    MHW100 and SHOdded like this.
  3. MHW100

    MHW100 SHO Member Supporting 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 SHO Member

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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
     
  6. MHW100

    MHW100 SHO Member Supporting Member

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

    SM105K Land Yacht Pilot Supporting Member

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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."
     
    Lostneye and Jordan_R like this.

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