Electronic Fuel Injection

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I have decided to go a different route then most and install two indivual throttle bodies (ITBs) instead of a single throttle body and plenum type system. So far everything is working great based on Speed Density (Maifold pressure reading) which many thought would not be possible. I also have a more agressive cam with no overlap which probably makes the situation easier (278 duration, .288" lift). More information to come as I install EDIS spark control. Until then I wont be able to give a full review.
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Heres what I have so far: http://youtube.com/watch?v=1MPw3m2VxWE
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==Building==
==Building==

Revision as of 00:20, 1 December 2006

I have decided to go a different route then most and install two indivual throttle bodies (ITBs) instead of a single throttle body and plenum type system. So far everything is working great based on Speed Density (Maifold pressure reading) which many thought would not be possible. I also have a more agressive cam with no overlap which probably makes the situation easier (278 duration, .288" lift). More information to come as I install EDIS spark control. Until then I wont be able to give a full review.

Heres what I have so far: http://youtube.com/watch?v=1MPw3m2VxWE

Contents

Building

Calibrating temperature sensors
TWM 40mm throttle bodies, TPS, fuel rail, and regulator
Fuel plumbing
Final EFI assembly

Research

Initial thoughts: http://www.bmw2002faq.com/component/option,com_forum/Itemid,57/page,viewtopic/p,319629
FIdle and MAP: http://www.bmw2002faq.com/component/option,com_forum/Itemid,57/page,viewtopic/p,319717
Fuel plumbing, etc: http://www.bmw2002faq.com/component/option,com_forum/Itemid,57/page,viewtopic/t,204528/
Thermistor sensors: http://www.bmw2002faq.com/component/option,com_forum/Itemid,57/page,viewtopic/p,324206/highlight,/#324206
Throttle linkage: http://www.bmw2002faq.com/component/option,com_forum/Itemid,57/page,viewtopic/t,280025/
AN Fittings: http://www.bmw2002faq.com/component/option,com_forum/Itemid,57/page,viewtopic/t,280238/

MegaSqiurt info
Pickups (Hall, coil, VR): http://www.megamanual.com/ms2/pickups.htm
MegaSquirt and Crane XR700: http://www.bmw2002faq.com/component/option,com_forum/Itemid,57/page,viewtopic/t,275308/
MegaSquirt and Tach signal: http://msefi.com/viewtopic.php?p=131300&highlight=distributor
36-1 tooth, Ford EDIS ignition (future): http://www.megamanual.com/ms2/EDIS.htm

Master parts list

  • 2 TWM 2900 DOCE 40mm's (2900 + 2910)
  • TWM Fuel rail
  • TWM pressure regulator (2800-6401)
  • TWM TPS switch and plug
  • Mangoletsi intake manifold
  • 318 water manifold
  • Copper pipe bypassing manifold (to heater box)
  • Electronic under-car fuel pump (40+ PSI. for a Ford F150)
  • MegaSquirt (MS II v3. keeping distributor for now, future expansion in mind)
  • O2 sensor (Innovate LC-1)
  • 12' MegaSquirt pre-labeled wiring harness
  • Mechanical fuel pump blockoff plate
  • Two Bosch temperature sensors (62110788115)
  • Painless wiring 7 circuit fuse box (dual relay hot switched relays)
  • OEM BMW intake manifold gaskets
  • Injectors (22# Bosch Pink Tops)
  • Lokar throttle cable 36"
  • Fuel plumbing, filters, AN fittings, etc
  • Mangoletsi barb for brake vacuum
  • Grommets
  • More band clamps (big ones for fuel pump)
  • Hose mounting clamps
  • 50mm TWM air horns
  • 470 ohm resistor (in between MS and O2 sensor)?

Notes to self

(none at this time)

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