1. Registration trouble? Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved.
    Dismiss Notice

TBI Thoughts

Discussion in 'Builds and Fabricators Forum' started by Mcruff, Aug 19, 2014.

  1. Apr 14, 2016
    Bob-The-CJ

    Bob-The-CJ Member

    Waxahachie, Texas
    Joined:
    Nov 6, 2012
    Messages:
    364
    You can easily put together a system for around $600. My big problem is the high pressure in the lines. The early systems ran around 15psi and that is a good deal.

    Yall keep in mind you can have the a factory GM computer reprogrammed cheap enough, that is the key to getting it done for around $600

    Also, consider that to convert a GM 4.3 FI engine to a carb cost you easily $550. That is the way I am going but that is not the only way to do it. Fuel Injection is cool for a lot of reasons.

    Either way you are out about $1500-1700 to convert to a GM 4.3 with either option. That is just for the guys wanted to convert not just directly related to the current discussion of just fuel injected. Just thought some one might find it useful
     
  2. Aug 8, 2016
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
    Joined:
    Jan 15, 2011
    Messages:
    1,566

    Have to recall that....finally i wont recommend anymore the holley blue pump, it work right the a tbi 87-95 with a 12-15 psi but the newer pump have now a steel bushing instead of the brass one the used to put in. Been trought two pump in one year.

    I've been runnig an E8094 from napa since 4 month without any issus.
     
  3. Aug 8, 2016
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
    Joined:
    Jan 15, 2011
    Messages:
    1,566

    Parting in a junkyard with lower the project price.

    i had a chance to get a complete kit made by AFI for 250$, had to buy the temp sensor and it work fine.

    I love the injection on my jeep we have cold winter so it worth every penny (even if i would have paid 1000$).
     
    Posimoto likes this.
  4. Nov 12, 2016
    termin8ed

    termin8ed I didn't do it Staff Member Sponsor

    Mason, MI
    Joined:
    Dec 22, 2002
    Messages:
    2,376
  5. Dec 7, 2016
    wasillashack

    wasillashack Member

    Wasilla, Alaska
    Joined:
    Mar 17, 2008
    Messages:
    120
    I realize this is an old thread, but something to consider for adapter material is Micarta, not the counter top stuff, the Micarta I am referring to is used by electric motor/generator repair/rewind shops. It is an excellent insulator, electrical and heat, can be shaped with common hand tools found in any garage, easily machined with a Dremel, hack saw, file, and tapped with regular taps. It is available in various thicknesses. Good luck!
     
  6. Dec 10, 2016
    Willys43

    Willys43 New Member

    Kansa City
    Joined:
    Feb 7, 2016
    Messages:
    36
    I made my adapter out of 1/2 plate steel, with a hole saw ,a grinder, and a die grinder. Works fine.
     
    johneyboy03 likes this.
  7. Dec 17, 2016
    Willys43

    Willys43 New Member

    Kansa City
    Joined:
    Feb 7, 2016
    Messages:
    36
    The Willys with gm efi just started 1st try in 11 degree weather. I'm a happy camper. Then I went back inside.
     
    johneyboy03 likes this.
  8. Jan 17, 2017
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
    Joined:
    Jan 15, 2011
    Messages:
    1,566
    Started mine (tbi) on a minus 35 last winter, took two try but started running with any assistance of me on the gaz pedal.
     
  9. Jan 17, 2017
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member Sponsor

    Tantallon, Nova...
    Joined:
    Nov 22, 2003
    Messages:
    5,044
    Fahrenheit or Celsius? :D

    H.
     
  10. Jan 17, 2017
    timgr

    timgr Jeepin' Nerd Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
    Messages:
    18,923
    Not much difference... Celsius and Fahrenheit are the same at -40 ... but maybe that was your point. <head scratch> :coffee:
     
  11. Jan 18, 2017
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
    Joined:
    Jan 15, 2011
    Messages:
    1,566
    i did the conversion for you ahah...-35 fahrenheit :)
     
  12. Mar 18, 2018
    willys59cj5

    willys59cj5 Sponsor Sponsor

    Gilroy, CA
    Joined:
    Jun 1, 2005
    Messages:
    634
    I would like to make an update for everyone thinking about going the Megasquirt route. I ran MS1 for 12 years and it worked quite well, but there were a few issues I had that I was unable to work out. My advice would be to start with MS2. Several reasons......one is that the rpm resolution on MS2 is much finer (1 for MS2 vs 100 for MS1). This makes using the tuning program work much better (MegaLogViewer as well as TunerStudio). You have more adjustability in parameters you set to make the engine run right. (In a Jeep you might see changes in elevation from sea level to 10k feet). MS2 has a fuel equation that is called %baro which takes into account changes in barometric pressure so it automatically adjusts your fuel based on altitude. I would also suggest getting the mapdaddy from diyautotune it fits right on the V3 board and takes the place of the single map sensor. This allows the ecu to get real time reading on altitude changes. (On MS1 you would have to stop as you were going up in altitude turn the engine off, then restart the engine to allow the ECU to factor in the change in pressure). Another reason to start with MS2 is you can run the IAC stepper motor directly and doesnt require additional modifications to your throttle body (MS1 you can run a different valve, but then you have to figure out a way to adapt the valve to your current set up. I was going to have McRuff machine an adapter for me but after more research and cost effectiveness I chose to move to MS2. The MS2 daughter card plugs in place of the MS1 chip and costs $136. The map daddy with two barometric sensors on it cost $74. The main forum for megasquirt that I would use is MS Extra and for Megasquirt related parts I would use Diyautotune. Hope this helps someone now or in the future considering Megasquirt.
     
  13. Mar 18, 2018
    Posimoto

    Posimoto Hopeless JEEP Addict Sponsor

    Kings Beach, Ca....
    Joined:
    Aug 7, 2003
    Messages:
    4,385
    Long time, no see, Ryan. Good to see you are still around.
     
  14. Mar 18, 2018
    willys59cj5

    willys59cj5 Sponsor Sponsor

    Gilroy, CA
    Joined:
    Jun 1, 2005
    Messages:
    634
    Hi John, Thanks! Yep still around Love this Jeep forum. Many times I just browse without saying much.
     
    Posimoto likes this.
  15. Mar 23, 2018
    jzeber

    jzeber Sponsor Sponsor

    Morgan Hill, Ca
    Joined:
    Nov 15, 2003
    Messages:
    1,924
    Ditto, want to hit Hollister in April?
     

Share This Page

New Posts