Chasing the Procharger flatline

Discussion in 'Forced Induction - 5.0L V8 Engine' started by whatsup62, May 13, 2017.

  1. Chummel

    Chummel Well-Known Member

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    I see a max of 86.xx lbs at around 7,400 rpm. I have a Stage 2 D1 with stock manifold and off road headers. I am on E85 as well.
     
  2. SolarFlare

    SolarFlare Well-Known Member

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    Thanks for the data point. That's quite a bit more than I, hoping it's just the D1 flowing more air.
     
  3. OP
    OP
    whatsup62

    whatsup62 Well-Known Member

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    I see 86.688 at 7100 and it stays at that number through 7600. 86.688 is max reading - doesn't mean airflow still not increasing. I have a P1 boost reading at 7100 is 9.8 and maxed out at 11.1 at 7600.
     
  4. Tommy V

    Tommy V Well-Known Member

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    Yep 86 for me at 7200 rpms stock intake and mak cat deletes.
     
  5. 5hlucky

    5hlucky Well-Known Member

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    Bringing this back from the grave...did you ever figure out why your maf lb/min appeared to be lower than normal for a p1 car?
     
  6. SolarFlare

    SolarFlare Well-Known Member

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    No, i just kept on trucking.
     
  7. SolarFlare

    SolarFlare Well-Known Member

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  8. 5hlucky

    5hlucky Well-Known Member

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    lmao, thanks. so switching to the rpm belt is basically what did it for you? have you considered running a GripTek pulley?

    EDIT I see you got rid of the proflo as well. Any anecdotal thoughts on what was more important in bringing up your maf lb/min, bypass valve or belt? or you think it was like a 50/50 situation?
     
  9. SolarFlare

    SolarFlare Well-Known Member

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    I think it was mostly the proflo, there was no sign of belt slip with previous belt, not saying it wasn’t, but it didn’t look like it was,
     
  10. 5hlucky

    5hlucky Well-Known Member

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    interesting...i've seen plenty of other threads where procharger tech has said there's zero issues with the proflo, and also this video .

    i'm in the same situation now as you were then, where i get max ~70lb/min at redline...and that's even with a step down to a 4.25 from the 4.75. i do have a gates hd green belt, with no discernable dust anywhere in my bay, and per my boost box logs boost steadily raises with rpm. but i guess there could be a small boost leak somewhere either from a bit of belt slip during the whole pull or the proflo leaking air?

    how loud is that turbosmart bypass valve you have? any reason you went with that over the red race, other than being nearly half the price?
     
  11. SolarFlare

    SolarFlare Well-Known Member

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    The 50mm turbosmart is more compact, not as loud and considerably cheaper.

    The thread I linked you has the flows before and after and that was a 4.5 pulley. Now a 4.25 I max the maf flow at around 7100rpm
     
  12. 5hlucky

    5hlucky Well-Known Member

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    yeah def a big difference in maf flow between the two. the other interesting thing i notice is your boost seemed to be significantly less jagged with the new belt vs the old belt, definitely much more of a flat line which is nice. my boost still looks like yours did in the fist picture...that second pic you're on a rpm belt? i'm on an hd green belt, maybe i need to mess with the pre-load and tension. you're on a stage 2 kit? if so where did you pick up the rpm belt? Also are you on 93 or you move over to e85?
     
  13. SolarFlare

    SolarFlare Well-Known Member

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    That before/after was on an 670HD green. Stage 2 on 93. Now I’m E85
     
  14. 5hlucky

    5hlucky Well-Known Member

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    Ok...looks like step 1 for me is to get off this proflo and see what happens. thanks for the help!
     
  15. SolarFlare

    SolarFlare Well-Known Member

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    No problem. Good luck
     
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