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  1. #91
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    Quote Originally Posted by jphii View Post
    I can't get the vid either Gary. Very nice work on the restrictor plate Tip: One hole over each opening instead of three with a real velocity stack. Something like this (built for a KTM 950 FCR setup, so the boss below the bell is for mounting an air filter):

    The restrictor plate maybe refined down the road with velocity stacks, but for now it servers it's purpose trying to get the intake tuned in....




    Quote Originally Posted by Dave Strong View Post
    Whats withe horn going off? Does the ECU take a MAP signal from the intake? Bad signal at some throttle position's?

    Dave
    Dave, See post #79, alternator dead, horn was from low voltage warnings.

    Quote Originally Posted by R.grover View Post
    just a thought the tps I no that you will have a throttle shut and wot voltage but what about half open etc between the the two styles
    Currently working on a progressive style linkage that will or may cover the flat spots. Obviously there's a tremendous amount of air off idle, progressive linkage should move the TPS at (example) an approximate 2:1 ratio, so coming off idle almost instantly puts it into a mid range position.




    Gary

    Growing old is inevitable, growing up is optional.......

  2. #92
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    gary, i wonder if it has something to do with the signal to the map sensor? have you put a ddt on it and checked to see what the reading is? someone also posted about going to crankcase injection, it probably can't be done w/ the stock ecu, the point in time of injection is different and i basically had to change my whole fuel curve from my first engine to get it all to work
    action mobile marine, 772 528 0754, dealers for aces fuel products,wolf efi, pro marine,latham and gaffrig/livorsi. we build gearcases and modify them(3 litre) to ratchet, and powerheads as well. 21 skater/3 litre wolf efi 113 mph the engine build http://www.screamandfly.com/showthre...-3-litre-build

  3. #93
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    Morning Charlie,

    MAP sensor checks out perfect on the DDT, matter of fact, I had 2 and checked them both. It's obvious that there's not enough fuel available when she comes off idle as felt by the stumble. After adding the restrictor plate, off idle response was much better (still not perfect) which proves my theory too much air/lack of fuel senerio. I'm going to run a vacuum signal to the EFI reg. to set if I'll gain enough psi to help cover the off idle bogg. It's all a work in progress......lol.




    Gary

    Growing old is inevitable, growing up is optional.......

  4. #94
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    adding vacuum will drop the fuel pres at idle slitely. i just wonder if you have some kind of pulsation feeding the vac signal to the map. maybe put an inline restrictor in the vac line to the map sensor
    action mobile marine, 772 528 0754, dealers for aces fuel products,wolf efi, pro marine,latham and gaffrig/livorsi. we build gearcases and modify them(3 litre) to ratchet, and powerheads as well. 21 skater/3 litre wolf efi 113 mph the engine build http://www.screamandfly.com/showthre...-3-litre-build

  5. #95
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    Quote Originally Posted by mrcrsr View Post
    adding vacuum will drop the fuel pres at idle slitely. i just wonder if you have some kind of pulsation feeding the vac signal to the map. maybe put an inline restrictor in the vac line to the map sensor
    Charlie, please explain in detail on inline restrictor for MAP signal......

    On the EFI reg. when vacuum port controlled.............when vacuum is applied (at idle) pressure is set to 42-44 PSI, once vacuum is reduced (throttle opens) the pressure builds up to 48-50 psi. That's the way mine works.




    Gary

    Growing old is inevitable, growing up is optional.......

  6. #96
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    exactly, on the fuel pressure. as far as the restrictor imagine an inline double ended hose barb w/ a .010-.020 orifice in the center, that slows down/evens out the vacuum pulses that the map mite be seeing w/ that intake design.
    action mobile marine, 772 528 0754, dealers for aces fuel products,wolf efi, pro marine,latham and gaffrig/livorsi. we build gearcases and modify them(3 litre) to ratchet, and powerheads as well. 21 skater/3 litre wolf efi 113 mph the engine build http://www.screamandfly.com/showthre...-3-litre-build

  7. #97
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    Quote Originally Posted by mrcrsr View Post
    exactly, on the fuel pressure. as far as the restrictor imagine an inline double ended hose barb w/ a .010-.020 orifice in the center, that slows down/evens out the vacuum pulses that the map mite be seeing w/ that intake design.
    I'll make a restrictor orfice up to try, thks Charlie




    Gary

    Growing old is inevitable, growing up is optional.......

  8. #98
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    if you make that a T fitting in the MAP tube with a regulator valve
    http://www.conrad.nl/ce/nl/product/2...er-Zeef-filter
    ( RC model fuel engines parts )
    you could try to bleed in more air to the MAP sensor to get a richer mixture
    bypassing the manifold vacuum
    and retune the TPS for the richer mixture at idle
    but it,s all just

  9. #99
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    Ronnie, I'll keep that in mind. As for tuning the TPS for a richer mix, that can only be done with a ratio change off the throttle. The TPS regardless of its position is recognized by the ECU at key up and that reading is what the ECU assumes is idle.




    Gary

    Growing old is inevitable, growing up is optional.......

  10. #100
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    Quote Originally Posted by Liberator*21 View Post
    I'll make a restrictor orfice up to try, thks Charlie
    Think Charlie is on the right track. Remember reading about something like the issue your having when the first SVS's came out for the 2.5 Pro Max's the fix had something to do with the vac signal to ECU, once you got it right they worked great.

    Dave
    1980 Cougar 19 tunnel,90 2.4L Bridgeport EFI in middle of restoration.
    1988 BAJA Sunsport 186, 96 225 Pro Max
    79 12' Auminum, 95 Merc 9.9
    RIP Stu
    "So many idiots, so few bullets"

  11. #101
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    Going out testing today with the progressive ratio linkage and a spare MAP sensor w/a .020 restriction in it. Will try both but one at a time.


    This video is a mock up for concept..........You'll notice on the lower linkage arm, a black dot on top, that's the OEM ratio position for the TPS (1 to1 ratio). With the modified lower linkage arm the ratio is increased where at 1/4 throttle, the TPS is tricked in to 50% output and at 1/2 throttle its already sensing WOT. The slide linkage had to be made to protect the TPS as with the ratio change theres more travel of the linkage than the TPS would allow.





    Gary

    Growing old is inevitable, growing up is optional.......

  12. #102
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    looks very trick,that should work...................
    TRANSPORT SERVICE...UP TO 33 FEET....YOUR TRAILER OR MINE... FULLY INSURED...............
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  13. #103
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    Good luck.

    Dave
    1980 Cougar 19 tunnel,90 2.4L Bridgeport EFI in middle of restoration.
    1988 BAJA Sunsport 186, 96 225 Pro Max
    79 12' Auminum, 95 Merc 9.9
    RIP Stu
    "So many idiots, so few bullets"

  14. #104
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    I'm back after my outing this morning...........................

    And I'm happier than someone who just hit the lottery !!!!!!!!!!!!!

    A perfect outing, it ran flawlessly, no bog, no flat spots, great idle in gear, instant acceleration, tons of mid range pull. Seems my little progressive linkage works............





    Gary

    Growing old is inevitable, growing up is optional.......

  15. #105
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    Gary!!
    That was a sweeeeet ride!! Way different than the first ride.....
    way cool! That thing is well mannered and extremely driveable !!
    Great job man!!
    cant wait for the saturday shootout on ceasers.....see ya saturday buddy!

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