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Author Topic: ecu change???  (Read 1249 times)

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mowerman71

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ecu change???
« on: 21 February 2010, 20:06:31 »
been offered a ECU from a 3litre v6 is it worth fitting to my 2.5 v6 and will it make any difference in performance , car running fine at the mo , but was wondering about changing it , any advice please , cheers , jon
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biggriffin

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Re: ecu change???
« Reply #1 on: 21 February 2010, 20:23:34 »
cant change ecu on omega. as they are matched to the car and imobilizer. etc.
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Kevin Wood

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Re: ecu change???
« Reply #2 on: 21 February 2010, 20:27:25 »
..and 2.5 and 3.0 ECUs have the same map in anyway, IIRC.

3.0 cams are a useful upgrade but the ECU won't make any difference.

Kevin
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biggriffin

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Re: ecu change???
« Reply #3 on: 21 February 2010, 20:31:52 »
Cant beat cubes. put a 3.2 in it.
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TheBoy

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Re: ecu change???
« Reply #4 on: 21 February 2010, 21:03:17 »
same ecu, not worth it
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The Red Baron

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Re: ecu change???
« Reply #5 on: 21 February 2010, 21:09:11 »
Quote
same ecu, not worth it
so, are the chips the same for the 2.5 & 3.0 then :-?
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Kevin Wood

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Re: ecu change???
« Reply #6 on: 21 February 2010, 21:20:50 »
Quote
Quote
same ecu, not worth it
so, are the chips the same for the 2.5 & 3.0 then :-?

I believe so.

Kevin
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The Red Baron

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Re: ecu change???
« Reply #7 on: 21 February 2010, 21:25:43 »
Quote
Quote
Quote
same ecu, not worth it
so, are the chips the same for the 2.5 & 3.0 then :-?

I believe so.

Kevin
ummm. thanks.
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biggriffin

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Re: ecu change???
« Reply #8 on: 21 February 2010, 22:28:51 »
the 3.0l chip has slightly more fuelling at the top end.
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mowerman71

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Re: ecu change???
« Reply #9 on: 22 February 2010, 08:07:39 »
thanks all for the advice , think it will stay as it is , was just an idea , yep i like the idea of the cams being changed, cheers . jon
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TheBoy

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Re: ecu change???
« Reply #10 on: 22 February 2010, 08:42:37 »
Quote
the 3.0l chip has slightly more fuelling at the top end.
Don't believe it does - the ECU 'learns' the fuelling required.
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Kevin Wood

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Re: ecu change???
« Reply #11 on: 22 February 2010, 10:29:21 »
Quote
Quote
the 3.0l chip has slightly more fuelling at the top end.
Don't believe it does - the ECU 'learns' the fuelling required.

The MAF sensor tells it how much air is entering the engine and it calculates required fuel from that. The map can therefore remain the same. It's just that a 2.5 won't be pulling as much air due to the smaller cylinder displacement.

Kevin
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Seth

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Re: ecu change???
« Reply #12 on: 22 February 2010, 10:36:29 »
Quote
Quote
Quote
the 3.0l chip has slightly more fuelling at the top end.
Don't believe it does - the ECU 'learns' the fuelling required.

The MAF sensor tells it how much air is entering the engine and it calculates required fuel from that. The map can therefore remain the same. It's just that a 2.5 won't be pulling as much air due to the smaller cylinder displacement.

Kevin

Took the words out of my mouth Mr Wood!
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2woody

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Re: ecu change???
« Reply #13 on: 22 February 2010, 11:33:38 »
I've just taken 3.0 cams out of my 2.6 and put the originals back in  - gained 4 HP
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Marks DTM Calib

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Re: ecu change???
« Reply #14 on: 22 February 2010, 11:43:09 »
Quote
I've just taken 3.0 cams out of my 2.6 and put the originals back in  - gained 4 HP

You did something wrong then or have another issue.....when fitted to Mick Dundess, they gave around 17-18bhp with a buggered exhaust!
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