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  1. #1
    Hondapro210's Avatar
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    X-Charger + 42 injectors + Fizzle

    I'm going to be putting a x-charger with 42 injectors and a fizzle intercooler on my 2005 RXT, my question is am I going to need fuel pressure regulator if I go the intercooler route.
    I've read alot saying if I keep the stock intercooler I'll be fine with 42 injectors, but if I add the external cooler is a regulator needed.


  2. #2
    Orlando Shark's Avatar
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    Yes, you will need a Fuel pressure regulator aswell as an A/F wideband reader to be able to tune to get the proper AFRs. Shoot for 11.8-12 WOT and you should be good.

    If you keep the stock intercooler then you wouldn't need the RRFPR and the x charger with 42's will suffice.

  3. #3
    Hondapro210's Avatar
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    Is there a big difference from a stock to fizzle cooler ?

  4. #4
    shrabber's Avatar
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    yes..

  5. #5
    Quote Originally Posted by Hondapro210 View Post
    Is there a big difference from a stock to fizzle cooler ?
    Yes, you will feel the difference instantly. However don't know if you can keep your stock exhaust ( if you haven;t already changed to a through hull)

  6. #6
    Waiting for winter ARCTIC's Avatar
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    Get that x charger and injectors in and report back ASAP you can always add the intercooler later

  7. #7
    Hondapro210's Avatar
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    Quote Originally Posted by sigma rxt View Post
    Yes, you will feel the difference instantly. However don't know if you can keep your stock exhaust ( if you haven;t already changed to a through hull)
    For now I was just gonna remove the resonator and do the through hull after the summer,
    Anybody have one for a 05 model rrfpr ??

  8. #8
    h2jim's Avatar
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    Quote Originally Posted by Hondapro210 View Post
    I'm going to be putting a x-charger with 42 injectors and a fizzle intercooler on my 2005 RXT, my question is am I going to need fuel pressure regulator if I go the intercooler route.
    I've read alot saying if I keep the stock intercooler I'll be fine with 42 injectors, but if I add the external cooler is a regulator needed.
    Yes. With the external IC you will need a rrfpr and a way to monitor your AFR's.

  9. #9
    Hondapro210's Avatar
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    Quote Originally Posted by ARCTIC View Post
    Get that x charger and injectors in and report back ASAP you can always add the intercooler later
    That's what I'm gonna do, I should have the charger & injector's in this week, I have a 14/17r in there right now but hopefully Water4fire lives close by and can tweak to a 14/19 with his gauge before I go out this weekend.
    Will report my results.

  10. #10
    pass1's Avatar
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    Just to give you a hint on this setup, I'm running the same...08 gtx 215hp with x-charger, bosh 42's stock intercooler and stock intake and my I'm running rich at WOT, I see 11.2 to 11.4. I know I'm a bit too rich but at least i'm on the safe side.
    Time for more upgrades!!!!

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