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87 estate wagon carb

Discussion in 'The Venerable Q-Jet' started by Kwish, Feb 2, 2009.

  1. Kwish

    Kwish Active Member

    Just wondering the 87 carburetors are computer controlled arent they? and if they are is there a performance chip you can buy for em?
     
  2. GSXMEN

    GSXMEN Got Jesus?

    Other than diesels, '81 and newer should come with a computer.
     
  3. Kwish

    Kwish Active Member

    Thats what I thought, but im having trouble finding a chip for it. Dunno if they even make em.
     
  4. occupant

    occupant Occupant Ilied Industries

    I would think tuning it by hand, ear, vacuum gauge, tachometer, any of that would work better than trying to fight an ECM. I'm about to tackle the same issue with my '88. But I think these computers only control minor things like spark advance and when to allow the secondaries to open (from air intake temp, coolant temp, etc).
     
  5. Bad Boattail

    Bad Boattail Guest

    Is it a LeSabre (4th VIN digit = R) or an Electra (4 th VIN digit = V) Estate Wagon ?

    307 Olds (8th VIN digit = H) or 305 Chebby (8th VIN digit = Y) engine ?
     
  6. Kwish

    Kwish Active Member

    I know it is an electra estate wagon, and im pretty sure its an 307 olds. Ill have to check the vin.
     
  7. Kwish

    Kwish Active Member

    Oh, wow its actually a 305, wow haha didnt know that!
     
  8. Bad Boattail

    Bad Boattail Guest

    Okay,

    Now I know that, I have to search for a post on a German forum about a custom made chips for such an engine.
     
  9. Kwish

    Kwish Active Member

    Alright thanks!
     
  10. Mark Demko

    Mark Demko Well-Known Member

    Most performance gains on the computer controlled Q-Jet are made on the secondary side. The primary side is controlled by the mixture control solenoid (thats the tick tick tick you hear when its idleing) and the o2 sensor. When you get near full throttle and beyond the computer basically goes into open loop and the carb acts as a standard Rochester 4bbl. The primary side is computer controlled, the secondary side is not. Mark
     
  11. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    Erik,
    I think you have that reversed, the Y code is the 307 Olds, the H is the 305 Chebby.

    Both engines are gutless, a chip will make very little difference. It will give a little more spark advance and delay converter lock up.
     

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