fastfu
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| posted on 17/5/11 at 09:26 AM |
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S2000 F20C wiring
hi all
ive bought an s2000 engine and gearbox to go in a kitcar.
i did a lot of searching around for info before i started and got ecu pinouts etc but i have one plug that i cant find any info on (the big light blue
one in the picture) also im missing a plug from the ecu (plug A), would these both be on the interior loom for the car ?
its in the loom with the 2 ecu plugs, this one
does anyone know what its for ? is there a pinout for it ?
thanks
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franky
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| posted on 17/5/11 at 09:46 AM |
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you need to ping Daniel Mason a u2u. He's building a very nice MNR with one fitted.
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SeanStone
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| posted on 17/5/11 at 09:54 AM |
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Are you planning on using the standard ecu?
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PeteS2k
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| posted on 17/5/11 at 11:10 AM |
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IIRC, the engine loom, ECU and dash loom all interconnect - so the dash or interior loom is probably where you'll find the missing bits of the
jigsaw.
Worthwhile hunting out and downloading the S2000 workshop manual if you can, particularly when it comes to working out where all the wires go, and
which ones are actually needed for however you're intending to install.
I'm running mine on a DTA S60Pro. Only problem I had is that I couldn't get the idle control valve to work - but that may just be me! 
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fastfu
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| posted on 17/5/11 at 12:01 PM |
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quote:
Originally posted by SeanStone
Are you planning on using the standard ecu?
yes i am
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SeanStone
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| posted on 17/5/11 at 12:04 PM |
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If you fancy a lot of faffing then go for it, I'd recommend the aftermarket ecu route though.
I have some S2000 clocks for sale if you need them
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fastfu
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| posted on 17/5/11 at 12:10 PM |
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I can understand why people go for and aftermarket ecu's but the way i see it is atleast i know everything on the engine (sensors etc) are
compatible with the stock ecu and 240hp will be more than enough for me so i dont really need the ability to tune it.
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SeanStone
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| posted on 17/5/11 at 12:13 PM |
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It's not really the tuning ability of aftermarket ecu's that made me go for it. I initially was going to use the standard ecu but it is a
lot of hassle. After spending the money on the gearbox and engine in the first place, the money needed for the aftermarket ecu isn't that large.
If you manage to get it running without problems then good on you! I just don't have that sort of patience, nor electronics knowledge
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PeteS2k
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| posted on 17/5/11 at 12:48 PM |
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DTA and Emerald (and maybe others) can run using the stock sensors, making it a relatively easy install. I got mine up and running and through IVA
using the S2000 map that comes with the DTA software, although it did need a proper mapping session afterwards.
Using the stock Honda ECU seems to be more popular in the US and Australia - something to do with regualtions over there. A hunt on some of the US /
Ozzie forums should turn up some help on how to do it. Like Sean I started with the same intentions, and did quite a bit of digging down the OEM
route, but in the end, reviewed my priorities (time, patience etc vs. the cost of an aftermarket ECU & mapping ) and went after-market.
But it can be done....
[Edited on 17/5/11 by PeteS2k]
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PeteS2k
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| posted on 17/5/11 at 12:52 PM |
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By the way... what are you putting the engine in?
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mcerd1
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| posted on 17/5/11 at 02:40 PM |
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quote:
Originally posted by fastfu
quote:
Originally posted by SeanStone
Are you planning on using the standard ecu?
yes i am
what age of car did it come out of ?
(I've got a PDF manual for the earlier ones somewhere...)
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fastfu
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| posted on 17/5/11 at 04:11 PM |
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The engine came out of a 2004 ap1 s2000
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SeanStone
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| posted on 17/5/11 at 04:44 PM |
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http://pdftown.com/2000-2003-Honda-S2000-Manual.html
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daniel mason
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| posted on 17/5/11 at 04:56 PM |
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i would strongly advise you to talk to richard bulmer before you go much further.he will put you on the right track and is porobably one of the best
around.
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mcerd1
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| posted on 17/5/11 at 06:09 PM |
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quote:
Originally posted by SeanStone
http://pdftown.com/2000-2003-Honda-S2000-Manual.html
^^ thats the same one I've got
I know the 2004+ manual is alot bigger (~3x as many pages) but I never managed to get a copy of that 
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atomic
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| posted on 13/7/11 at 11:58 AM |
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If you are trying to use the oem ecu you will need to use the Honda instruments and air pump as the ecu will through error codes. If you remove the
pump and dont implament a work around (basically as resistor) then the ecu will go into limp-home mode as it will not like the AFR.
You would be far better off going down the aftermarket ecu route as it is much less troublesome and allows for far better tuning. The very best
ecu's for this application are the EFI Technology srl Euro-4 and the Pectel SQ6. They are not cheap but will be more than you ever need. The EFI
Euro-4 is the best value for money of the two as they are both cheaper and come fully equipped where as the SQ6 uses cost options.
A cheaper but no less capable option would be the new EFI Technology Euro-2. It has many of the same features of the Euro-4 but does without things
like built-in Wideband & drive-by-wire throttle control. I think the Euro-2 would be ideal for your needs.
There are of course other options from the likes of Bosch, Magnetti Marelli & Motec but these are more costly and not necessarily any better. I
would recommencd you have a word with Richard @ Ole Buhl as they worked directly with Mugen and EFI Technology to develop software specifically for
Honda applications including proper support for V-tec & i-Vtec. EFI Tech are also the ecu's of choice for Honda/Mugen Motorsport and are
used by many in the WRC, PWRC, S2000, BTCC and many other series around the world.
You may also want to check which Oil Jet bolts you have fitted as the earlier engines had 2 hole bolts that could lead to oil starvation (especially
on No4 Cylinder). These where later updated to a 4 hole design. If you can budget for it then a Dry Sump system from the likes of Race Engine Design
is the best solution but if not then you most definitely want to install a Accusump on this engine.
[Edited on 13/7/11 by atomic]
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