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2.3 whipple gen2 3.25 upper only = 11lbs of boost?

Discussion in 'Engine/Tuning' started by svtaddict, Mar 12, 2015.

  1. svtaddict

    svtaddict Got Traction? Established Member

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    My cobras making 11psi with a gen 2 whipple and 3.25 upper only. Its making 549up and 509Tq. Its been running decent but from I've read. I probably have the lowest psi for that size pulley compared to anybody else. Haven't found any boost leaks or anything. Opinions?
     
  2. jbou91

    jbou91 Active Member Established Member

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    Belt slip? Power seems great for 11psi, should be at 14-15 I believe though.
     
  3. oldmodman

    oldmodman Well-Known Member Established Member

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    Yes. The 3.25 should be giving you 14/15 in good air. 3.0 was giving me 17. And my 2.8 was giving 19 at the beach.

    And these numbers were with the Gen 1 Whipple 2.3
     
  4. Rich'sTRsvt

    Rich'sTRsvt Member Established Member

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    Do you have full length headers? That can lower boost some.
     
  5. svtaddict

    svtaddict Got Traction? Established Member

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    yes i do i have longtubes off road x and stingers
     
  6. whitedevil95

    whitedevil95 @the03cobro Established Member

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    Can you post a dyno sheet? Was your boost steady all the way to redline? I am on a very early whipple 2.3 with a 3.0 pulley and made 15.4psi which i think is right for the earlier Lysholm rotor unit. I know on my sheet you can see the boost is like a flat line 15.4 from like 2,800 all the way to 6,500.
     
  7. c6zhombre

    c6zhombre E85 NutSwinger Established Member

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    how are you measuring the boost? are you sure thats 100% functioning?

    But considering how opened up your exhaust is, it's definitely time to go with the 3.00" upper. Soon to be followed by an E85 tune with a 2.6" upper! You'll get some boost then! lol
     
  8. TRBO VNM

    TRBO VNM Authorized Vendor Authorized Vendor

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    Something is not right somewhere.

    the 2.3 came standard with a 3.5" pulley. the gen 1 made 13# and the gen 2 made 15#. Long tubes won't drop it much. At most 2# and typically I only see about 1#. Plus you are running a 3.00 pulley, so you should be closer to 15#.

    how is boost being measured?
     
  9. PWORLDSTANG

    PWORLDSTANG Bring 'Em Out Established Member

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    That is a 17lb pulley you have installed. I've run the same one and pegged my gauge consistently at 17lbs on that pulley. How exactly are you measuring boost?
     
  10. svtaddict

    svtaddict Got Traction? Established Member

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    tuner hooked up a boost gauge straight to the engine
     
  11. svtaddict

    svtaddict Got Traction? Established Member

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    If my intake manifold gaskets were leaking would it still idle and run fine? Or should I pull the blower and check?
     

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