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16V/8V ECUs

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Offline Rhinoman

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16V/8V ECUs
« on: April 09, 2004, 10:18:38 AM »
Does anyone know if the 16V and 8V ECUs are physically interchangeable. I know the mounting brackets vary (mine is on the (UK) drivers side) but are the connectors the same? I am wondering if the 16V is the same but with a few extra connections and different firmware. I am designing new (reprogrammable) internals for an 8V and would like to produce a universal design (with different firmware) if possible. I saw a picture of a 16V one on eBay and it looked pretty much the same connector, which got me thinking
« Last Edit: April 09, 2004, 10:19:42 AM by Rhinoman »
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Offline Captain_Jack

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Re: 16V/8V ECUs
« Reply #1 on: April 09, 2004, 11:54:23 AM »
No - They are different.  The 16V is a multiport fuel injection.
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Offline NY_SIDEKICKER

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Re: 16V/8V ECUs
« Reply #2 on: April 09, 2004, 03:17:24 PM »
WHEY TO GO CAPTN JACK......LOOKS LIKE YOU'VE BEEN LEARNING ALOT WHILE BUILDING YOUR RESCUE SAMMY  ;)   MATTY D.  8)
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Offline Rhinoman

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Re: 16V/8V ECUs
« Reply #3 on: April 11, 2004, 08:59:19 AM »
Quote
No - They are different.  The 16V is a multiport fuel injection.


Like I said, I know that but what I'm asking is are the boxes and connectors the same?
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1986 SJ413K PickUp, 1.6L conversion.

OBD1 - Full diagnostics on a PC/Laptop: http://www.rhinopower.org
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Offline Cowtracker

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Re: 16V/8V ECUs
« Reply #4 on: April 11, 2004, 04:53:13 PM »
Um well I don't know for sure but I doubt you can use the same mounting hardware. or wiring harness/conectors.
the 8v is throttle body injected and uses a map sensor .  the 16v is port fuel injected this means  3 more injectors to fire  and it uses a Mass air flow sensor.

I wanna know if there is any fuel econemy gains swapping over to a 16v
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Offline Rhinoman

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Re: 16V/8V ECUs
« Reply #5 on: April 11, 2004, 11:58:34 PM »
Thats true but the MAP/MAF issue shouldn't be too difficult to resolve, I can track for both then only fit one set of components for 8V or 16V. Its a pretty simple software change. The 16V I assume is batch fired and so only needs one more output, which could use one of the unused pins. I guess I'll have to take a trip to the breakers and cross reference the pinout.
You'd have to save a lot of fuel to pay for the swap to 16V
« Last Edit: April 11, 2004, 11:59:50 PM by Rhinoman »
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2000 Vitara 1.6, 3+3 Lift, 33"MTs, 5:83s, LWB brakes, Winch, Snorkel, Safari Rack
1986 SJ413K PickUp, 1.6L conversion.

OBD1 - Full diagnostics on a PC/Laptop: http://www.rhinopower.org
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Offline idaholwb

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Re: 16V/8V ECUs
« Reply #6 on: April 13, 2004, 06:35:31 PM »
 No, what you are asking won't work. The cases and connectors are completely different.
Sorry.  :-/
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Offline Rhinoman

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Re: 16V/8V ECUs
« Reply #7 on: April 13, 2004, 08:48:45 PM »
OK, thanks for that. I'll just carry on with the 8V design and maybe do a 16V one later on
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2000 Vitara 1.6, 3+3 Lift, 33"MTs, 5:83s, LWB brakes, Winch, Snorkel, Safari Rack
1986 SJ413K PickUp, 1.6L conversion.

OBD1 - Full diagnostics on a PC/Laptop: http://www.rhinopower.org
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Offline Bobzooki

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Re: 16V/8V ECUs
« Reply #8 on: April 14, 2004, 01:24:08 AM »
Quote
The 16V I assume is batch fired and so only needs one more output, which could use one of the unused pins.


That may be a bad assumption.  The 16 Valve has four injectors, and if I recall correctly, each has a separate output on the ECM.
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Offline Rhinoman

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Re: 16V/8V ECUs
« Reply #9 on: April 14, 2004, 09:15:04 AM »
A 16V version will be a long way off. I'll have to get my hands on one and try and get the FSM  for the 16V on CD. There was a site where you could download manuals but I tried it the other night and it seems to have gone
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2000 Vitara 1.6, 3+3 Lift, 33"MTs, 5:83s, LWB brakes, Winch, Snorkel, Safari Rack
1986 SJ413K PickUp, 1.6L conversion.

OBD1 - Full diagnostics on a PC/Laptop: http://www.rhinopower.org
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