Exporer Fuel Management October 10, 2007, 02:42:19 PM OK, the explorer engine comes with much more horse power stock so i have to ask.In addition to the good heads, intake setup and fuel injector types not to mention different software loaded,Is the Explorer 5.0 Bank or Batch fire?Is each injector wired back to the eec individually like the SO 5.0?anyone have wiring diagrams to check? Quote Selected
Exporer Fuel Management Reply #1 – October 10, 2007, 08:13:46 PM Quote from: jcassity;181796Is each injector wired back to the eec individually like the SO 5.0?The Explorers are mass air and have far better heads and intake than the SO 5.0... The Exploder stuff is basically GT40 pieces...AFIK all of the trucks E or F series were batch fire, no SEFI until Mass Air was added around '94... This includes the '93-'95 Lightnings(I'm looking at the '93 F Series EVTM) Inj 1, 4, 5, & 8 are fired as a group(bank)then 2, 3, 6, & 7...BTW Bank and batch fire is the SAME thing... IMO GMs has the correct term... Batch(a group of injectors)... Fords terminology is bank, for EXACTLY the same thing, has nothing to do with right or left engine bank... The term was used on all engines including the 4.9L in line six... Quote Selected
Exporer Fuel Management Reply #2 – October 10, 2007, 08:57:34 PM The Explorer is true SEFI. It only makes like 215hp.. It has a shiznitty cam with less lift than a stock 5.0 HO cam. The stock headers are a complete joke. Not that it matters for a fox swap but they are the number one bolt on power builder on a explorer/mountaineer. Dyno proven 15hp/35ft-lb gain to the rear wheels. But they cost $600. The Ex/Mounty 5.0 is really held back with its poor flowing exhaust setup, pitiful camshaft and very conservative tune.The explorer is also EEC-V Scott. Quote Selected
Exporer Fuel Management Reply #3 – October 10, 2007, 11:58:44 PM Quote from: CougarSE;181861The Explorer is true SEFI..Which is it,? tom says it isnt sefi, you say it is. Sounds to me like the explorer 5.0 went back to the old school two pins on the eec fuel mgmt system. I was talking with Martin today and for some odd reason i had a gut feeling it just HAS to be batch fire because of what we discussed.He was having a problem understanding how fuel can just be dumped into a head that isnt actully getting used right away unlike the sefi on our 5.0's. I told him the same happens (batch fire) on the 1988 3.8 and likewise on the 87 and down CFI systems. I was only bringing this up because I was actually amazed at what a leap in HP it was from the SO, i just figured all these good flowing heads/intake numbers that it would have been prudent for ford to do up a batch fire system to boot since the setup could handle it. Quote Selected
Exporer Fuel Management Reply #4 – October 11, 2007, 12:08:00 AM QuoteAFIK all of the trucks E or F series were batch fire, no SEFI until Mass Air was added around '94... Explorers are mass air, hence true SEFI. Tom was explaining how all the SD trucks and vans were batch fire. He was using the '93 F-series EVTM (still speed density) for an example on batch fire. Quote Selected
Exporer Fuel Management Reply #5 – October 11, 2007, 12:11:36 AM yeah, for some reason i just caught that part. I thought it was in relation to the explorer as though they "are the same" configuration.makes you wonder if there isnt more power to be had based on a batch fire system?although , our 5.0 cars were also "true sefi" so its still a little bit of a gray area for me. Quote Selected
Exporer Fuel Management Reply #6 – October 11, 2007, 09:15:11 AM Our SO cars were burdened with cylinder heads that did not flow as well and the F-series truck intake manifolds flow extremely well. I'm sure that the air/fuel curve in our cars was not meant for performance either.... Quote Selected
Exporer Fuel Management Reply #7 – October 11, 2007, 11:38:40 AM All of the TPI chevy engines were Batch fire in the Firebirds and Camaros. The only benefit of Sefi over Batch fire is idle quality.. Engine speeds above idle the engine is moving so fast that even batch fire's out of sequence injector firing is firing less than a second difference than what a sefi injector would be. Proportional to RPM. At one point in the RPM the injectors they are firing so much that they are basically on. Milliseconds between injector firing.Alot of your performance stand alone fuel management systems are batch fire. Quote Selected
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