Fuel pressure issues?? CEL on

  1. TheBigG

    TheBigG Senior Member

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    Wot at 3400 rpm is ok in every gear!
     
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  2. ez12a

    ez12a Senior Member

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    #32 ez12a, Mar 31, 2018
    Last edited: Mar 31, 2018
    not saying the type R is prone to this, but i've read mazdaspeed3 forums where they've blown up simply from using cruise control on an inclined freeway. We've come a long way for turbos to be so common place, i would hope they have engineered out some of these weaknesses.

    Personally/subjectively, my car feels best pulling above 3500. A question i ask myself, would an auto transmission downshift to do this pull? if so, then i might as well downshift too. You dont really hear about turbo equipped autos blowing, because well they downshift when they need to.
     
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  3. Micah

    Micah Senior Member

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    Unless you want faster accelleration in which case you would typically downshift from overdriven gears.... assuming you care enough to know your ratios
     
  4. UFO CTR

    UFO CTR Senior Member

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    Don't listen to these guys C, specially the guy with 37 mpg...you know that guys doesn't even touch the gas peddle with that kind of mpg! Your dealer is already fixing you problem...so no big deal! there are real people on this forum that want to help and not talk shit!!
     
  5. B3nji_Fc1

    B3nji_Fc1 New Member

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    Hey bro I’m having the same exact issue but it happens to me on 4th

    I’m Im FBO 27won turbo and built motor/ idk if it’s low pressure fuel pump that’s going bad or maybe I have a bad fuel line, I was thinking of upgrading to a aem 340 fuel pump, but trying to figure out how to fix the issue
     
  6. ExileAeterna

    ExileAeterna Senior Member

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    OP, any more problems after replacing the pump? Im having the same issues now with bolt ons and a tune. Honda said I've probably reached the limit of the pump (dumb considering im only about 380HP and 400TQ.) They wont warranty the part obviously because of the tune and parts. All three times I got this error was passing someone full throttle on a slight uphill in about 4th gear. RPMs were probably about 3-4k.
     
  7. OP
    OP
    Raw 381

    Raw 381 Senior Member

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    Since you’re deep in mods I’d go ahead and just replace your high pressure fuel pump. That’s most likely the issue
     
  8. OP
    OP
    Raw 381

    Raw 381 Senior Member

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    No this HPFP was replaced back then under warranty. Haven’t had an issue since, currently on custom tune running vp101 pump with 5 track days and about 6k miles in so far so good. I’m at 368whp and 361wtq which my tuner said is the safe limit. So if you’re popping HPFP’s at 400 then he was right lol
     
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