Chimera ECU

[nicktowe]

I have a 4.0l 1993 Chimera that needs a new ECU. Is the ECU fitted by TVR a standard Landrover unit or does it have a TVR specific map?

Nick

[Cider Andy]

It has a different map (in fact it holds a set of maps), held on an EPROM inside the unit. If it is just the Lucas 14CUX ECU that has failed, the chances are that the EPROM is still intact and could be removed from the faulty unit and installed in the replacement.

If you find a replacement, check the Lucas part number on it against the original. It will be five numbers followed by a letter with a symbol similar to the Mercedes-Benz star in front of it.

[chassis 33]

Be careful though, not all CUX ECU's have the EPROM in a socket, some more mundane applications had them soldered in.

Regards
Iain

[nicktowe]

My EPROM appears to be soldered in!

[GreenV8S]

They're normally soldered in. However, it's not too hard to un-solder them and either solder them into the new ECU or (far better) fit a socket, and solder the chip into a riser that plugs into the socket. This also means that if/when you decide to get it remapped, the fiddly bit of the job has already been done.

[chassis 33]

Hmmm, I thought all TVR's had and EPROM socket, obviously not!

There are various people who can fit one eg RPi www.rpiv8.com/carbs-2.htm#chipping

Regards
Iain

[daxtojeiro]

Hi, Id think about fitting an after market ECU instead if the price is high for a TVR item. A Megasquirt springs to mind
Phil

[nicktowe]

Thanks for the advice everyone. I have a landrover ecu already, so will try putting the EPROM in it (with a socket) to see if it works.

Nick

[mongoose]

chassis 33 said:

Hmmm, I thought all TVR's had and EPROM socket, obviously not! Regards Iain

Early ones were solder,later were socket,is what i was told(my later car is a plug in type).

[trackcar]

Yeah I've never seen a lucas ecu with a soldered in chip .. always had carriers .. as with most things TVR there seems to be some differences

[GreenV8S]

Well I was charged to convert mine the first time I had it mapped, so either I was ripped off or it was originally soldered in! Having seen what's involved I would bother paying somebody next time, the conversion is quite an easy job.

>> Edited by GreenV8S on Tuesday 16th May 13:27

[trackcar]

I think you were charged for the Mark Adams carrier ..

[rfisher]

Anyone want to sell me a 4l map chip or EPROM map file?