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ecu dilemma


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#1 _lxefi304_

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Posted 13 January 2010 - 07:09 PM

hey ive just built up a harrop stroker out of a vr gts for my mates vs ss. it came with the gts's ecu.i believe you cant use a vr ecu in a vs even thoe they plug in because the anti theft signal is different.unless you use a vr bcm.

im pretty sure the code is in the memcal not the ecu.

so my few questions are

is it true that the security codes are different between vr and vs

will a vr bcm work correctly with the rest of the the car besides the ecu

ive been told the std holden v8 memcals aint tunable but the hsv 185i and 215i chips are. if the std chips are tuneable we could just tune the original memcal.

#2 TerrA LX

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Posted 13 January 2010 - 07:36 PM

so my few questions are

is it true that the security codes are different between vr and vs

will a vr bcm work correctly with the rest of the the car besides the ecu

ive been told the std holden v8 memcals aint tunable but the hsv 185i and 215i chips are. if the std chips are tuneable we could just tune the original memcal.


I don't clain to know all as I have only played with a few, commodore forums would be your best bet but,

VR/VS codes are different.

There are different level BCM's so some things may not function, such as cruise control or wiper dwell??

All memcal's are programmable, even a V6 memcal cam be re programmed as a V8.

Edited by TerrA LX, 13 January 2010 - 07:41 PM.


#3 _lxefi304_

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Posted 13 January 2010 - 08:23 PM

yea i figured a few ppl here mite know as alot of people have done injected 5.0L conversion

with the bcm's i would be using a equivalent bcm but id rather be able to just get the original memcal tuned

#4 TerrA LX

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Posted 13 January 2010 - 08:41 PM

I would be trying to use what ecu etc that came with the motor.

Edited by TerrA LX, 13 January 2010 - 08:42 PM.


#5 76lxhatch

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Posted 13 January 2010 - 08:50 PM

with the bcm's i would be using a equivalent bcm but id rather be able to just get the original memcal tuned

You can simply have the memcal changed to ignore the security requirement for the engine

#6 TerrA LX

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Posted 13 January 2010 - 09:14 PM


with the bcm's i would be using a equivalent bcm but id rather be able to just get the original memcal tuned

You can simply have the memcal changed to ignore the security requirement for the engine



That would work in a torana but in a vr/vs with climate/cruise/power windows etc etc these things may not work.

#7 76lxhatch

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Posted 13 January 2010 - 09:19 PM

Not 100% sure, which is why I said 'for the engine'. I have seen it done with a VR Calais - the BCM was obviously still functioning as the key remote still worked (sorta), no issues with other BCM functions but mileage may vary...

#8 _lxefi304_

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Posted 13 January 2010 - 10:44 PM

it really needs a VS 215i memcal or a 185i memcal as the hsv memcals are live tunable.but there not so easy 2 find as no wreckers wanna separate them.

if the standard VS holden 5.0L memcal is tunable there wont be a problem as we can just trailer it and get it dyno tuned.

or get the VR 215i memcals anti theft disabled

or try a equivalent VR grade bcm with the VR memcal.
but VS run dual stage central locking where VR dosent and there may be sum other little diferences

the biggest problem is that there has been quite a few budget blowouts as all builds and he's quit low on cash and now ive noticed this problem. so he's ready 2 burn the thing. and im trying to work out the cheapest way around this

#9 76lxhatch

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Posted 14 January 2010 - 05:16 AM

if the standard VS holden 5.0L memcal is tunable

As above the chips can be rewritten, just need to be UV erased first. Thats neither here nor there as far as cost goes though anyway, a new electronically erasable chip is less than $10

#10 _showoff_

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Posted 14 January 2010 - 09:39 AM

yeh just get the anti theft removed.

Edited by showoff, 14 January 2010 - 09:52 AM.


#11 UCMatt

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Posted 12 February 2010 - 10:35 AM

VR/VS manual ECU's are the same with different code in the memcal.
Same deal with auto's
VR/VS BSM's are not the same, and are a major job to change.

By far the easiest option is to stick a VS 215i calibration into the VR memcal.
The only physical difference between a HSV and standard memcal is the addition of a knock filter. The code is quite a bit different.
Both are reprogrammable. Neither are 'live reprogrammable' without software modification.

Let me know if you need a hand......

Edited by UCMatt, 12 February 2010 - 10:37 AM.


#12 Statler

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Posted 12 February 2010 - 10:39 AM

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