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B18C-R Fuel Injectors Help

Discussion in 'Honda' started by chris2000, Jan 21, 2006.

  1. acuralover

    acuralover 15 Year | Platinum

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    so rightfully saying..a prelude 330cc peak n hold injectors are good enuff for b20b setup on rechipped ecu in an ek4????
     
  2. shiroitenshi

    shiroitenshi Senior Member
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    The fuel capacity is for at WOT, I think for people who've noticed how ECU mapping is done, the last final portion is always max (100% duty cycle), usually way before you hit the load(aka manifold pressue) vs. rpm points and like you said we need to reduce fuel on certain rpm vs. load points.

    The reason being, when you use big headers and exhaust, low engine speeds, air volume is not as good as the stock one, so need to reduce fuel, I did the same thing on VAFC last time because of poor low/near mid end issues.

    Also need to note that you're probably not running the stock fuel pressures with the above, but somewhere around 3.5bar (or higher) at wot, and 3-3.5bar at idle, which is why there is a need to reduce fuel on the low/mid ends.

    Notice that on stock engine, more pres than stock probably nets you better acceleration at WOT, but at part throttle, the engine may feel sluggish, or at idle, you can hear the engine coughing due to being rich (which does not happen on a honda ECU by the way at least not for long, because they regulate the AFR at part throttle when running closed loop. (I tested on the LM-1... :P) bumping up fuel pressure slightly, the ECU can compensate, changing the injectors, the ECU cannot. :P
     
    #22 shiroitenshi, Jun 7, 2007
    Last edited: Jun 7, 2007
  3. shiroitenshi

    shiroitenshi Senior Member
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    Yes, so far managed a guy here managed to get 260whp out of the injectors with only 3.5 bar fuel press.
     
  4. J101

    J101 Senior Member
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    ha ha .. that is if you have the LMA-3 :p

     
  5. J101

    J101 Senior Member
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    abang akuma, using bigger injectors with proper mapped ecu would definitely be the best option. the part that makes people excited for nothing is the requirement of using a bigger injectors for a bigger displacement thinking that by overfueling through injector size physically will resolve fueling issue. the ecu is still sending the same signal either 100cc or 1000cc injectors. so in other words, its more of a cukup-makan basis..liang-liang ngam-ngam fueling on the dyno with the chosen from-other-brand-car injectors. that is why prelude injectors suddenly went up price for this ngam ngam fueling business. ha ha ha ha

    its more of a personal preference if you buy brand new injectors. ada duit boleh beli, beli lah kan..nobody is stopping you. but at the end of the day if you can control it using an EMS, then you dont have to spend so many times on buying injectors on every upgrade. if you use stock ecu and 700cc injectors..sindiri mau ingat lar kawan. ha ha

    the RC injectors are expensive koz they have different features. sana website ada cakap mah. hehehe.

    sooner or later before we go into page 8 or 15, ppl are gonna ask "is 240cc enough for my mild type-r engine?", "is 310cc enough for my LPT setup on my honda", "my father just bought me a set of 1000cc sard for my birthday, can i use it"...the worst and should win some oscars.."ppl say type-r injectors bigger than EK4...."...

    :_:


     
  6. chris2000

    chris2000 Senior Member
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    hehe... Bro, this thread was started by me when i was asking and looking around for injector upgrade. But if you read the 1st post, this thread was started by me in January 2006! It is almost 1 and half year ago.

    Now, i have sources for reasonably price RC 310cc and 370cc injectors for Honda B-Series.
     
  7. udengfahlawi

    udengfahlawi Senior Member
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    oic...sumwan dig it out from last year yer?...i didn't notice that...hehhe....
     
  8. hattech-v

    hattech-v Senior Member
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    if got porn pic after the date baru ko perasan... hahahhaha
     
  9. J101

    J101 Senior Member
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    work must be quiet today i see :p

     
  10. shiroitenshi

    shiroitenshi Senior Member
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    Which I do, btw... :P
     
  11. Johnny_9

    Johnny_9 Senior Member
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    "Chris. 2nd gen B16A and B18C injectors have the different connectors"

    Do they come in a "set" i.e. connector plus socket (male/female) or is the one side connected to the wiring harness?
     

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