geoffsmith 21 Posted July 15, 2007 Report Share Posted July 15, 2007 (edited) As a matter of interest only, could anyone confirm that the circa 1990 Esprit ECU is type A082U7223? This is the part number for the Elan ECU and the only difference between open loop and closed loop control appears to be with the Memcal which is identified by the service number. This is a bit of a bugger because a US Elan has had an open loop ECU fitted by a dealer. Edited July 15, 2007 by Geoff Quote Geoff SmithLotusElanCentral.com and BOLLECKS† founder[†Bristol and Outlying Lands Lotus Elan Central Knowledge and Support] Link to post Share on other sites
geoffsmith 21 Posted July 19, 2007 Author Report Share Posted July 19, 2007 So is there an ECU expert on LEF? Quote Geoff SmithLotusElanCentral.com and BOLLECKS† founder[†Bristol and Outlying Lands Lotus Elan Central Knowledge and Support] Link to post Share on other sites
bzguy 2 Posted July 19, 2007 Report Share Posted July 19, 2007 Don't worry, there are lots Some people inhere are walking libraries Marcus, Dermot, Jonathan, Travis or someone else know these things very well Quote - Nulla tenaci invia est via - Link to post Share on other sites
Tentenths 1 Posted July 19, 2007 Report Share Posted July 19, 2007 Can anyone in here help Geoff with this? Quote Link to post Share on other sites
98GT3 0 Posted July 19, 2007 Report Share Posted July 19, 2007 Geoff, the Esprit ECU is a standard GM part, GM part No 01228708. It is only the memcal that makes it Esprit specific...... I don't know if it is the same unit as the Elan, but I would think it highly likely that it might be. Phil 98GT3 Quote Link to post Share on other sites
Tentenths 1 Posted July 19, 2007 Report Share Posted July 19, 2007 Geoff, this any help? Clicky Quote Link to post Share on other sites
bzguy 2 Posted July 19, 2007 Report Share Posted July 19, 2007 (edited) I can remember, as Phil says, that the memcal is Esprit specific, and they're quite rare, but I'm sure you'll find a definitive answer here ! Edited July 19, 2007 by bzguy Quote - Nulla tenaci invia est via - Link to post Share on other sites
98GT3 0 Posted July 19, 2007 Report Share Posted July 19, 2007 Geoff, this any help? Clicky mmmmmm.............. OK after reading that, it looks like there are at least 2 types of ECU, a 3 connector one with GM part No 01228707 and a 4 connector one GM part No 01228708. Phil 98GT3 Quote Link to post Share on other sites
esprits4de 2 Posted July 19, 2007 Report Share Posted July 19, 2007 I still have a brand new 3 connector "old" ecu from a faulty buy.... If it is of any help... Quote Olaf S400 project www.esprits4.de __________________________________ Link to post Share on other sites
Artie 6 Posted July 20, 2007 Report Share Posted July 20, 2007 mmmmmm.............. OK after reading that, it looks like there are at least 2 types of ECU, a 3 connector one with GM part No 01228707 and a 4 connector one GM part No 01228708. Phil 98GT3 Yes, the 3 connector ECU was for the non chargecooled Delco car. These had a similar memcal but it doesn't have the same mapping characteristics........And is the reason I chopped my non chargecooled harness and installed the 4 connector S4s ECM into my car. Much more fun with chips! Artie Quote 89 White Esprit SE...a few little upgrades....93 RX7.....Silverstone....slightly modded...Muahaha...New Addition:1990 300ZX TT......Hmmm Link to post Share on other sites
geoffsmith 21 Posted July 20, 2007 Author Report Share Posted July 20, 2007 Geoff, this any help? Clicky That seems to confirm that the ECU A082U7223 is common. Thanks for all the feedback (after James moved it to the right area!) and it's good to get a better understanding of what's what. Does anyone talk to their ECU? Over on LEC, ESM (Alan or ElanScan Man) has developed an application to log the Elan datastream from mode 1 requests - it works fine for the turbo Elans and we've diagnosed many faults on line. It doesn't work for Normas though, so we're working on deciphering the non-turbo data. All the best, Geoff Quote Geoff SmithLotusElanCentral.com and BOLLECKS† founder[†Bristol and Outlying Lands Lotus Elan Central Knowledge and Support] Link to post Share on other sites
Artie 6 Posted July 21, 2007 Report Share Posted July 21, 2007 That seems to confirm that the ECU A082U7223 is common. Thanks for all the feedback (after James moved it to the right area!) and it's good to get a better understanding of what's what. Does anyone talk to their ECU? Over on LEC, ESM (Alan or ElanScan Man) has developed an application to log the Elan datastream from mode 1 requests - it works fine for the turbo Elans and we've diagnosed many faults on line. It doesn't work for Normas though, so we're working on deciphering the non-turbo data. All the best, Geoff Geoff, Yes, with the Delco equipped cars from 89 up you can use what's called Freescan and it allows interface with the ECM, files can be logged to help diagnose problems with fuelling, spark etc. It also allows you to check engine fault codes and reset them if needed. The interface can be done via a USB cable with the appropriate cable/interface chip and a good laptop or a serial port can be used as well. Quite handy I must say! Artie Quote 89 White Esprit SE...a few little upgrades....93 RX7.....Silverstone....slightly modded...Muahaha...New Addition:1990 300ZX TT......Hmmm Link to post Share on other sites
Tentenths 1 Posted July 21, 2007 Report Share Posted July 21, 2007 Geoff, more info on Freescan here Quote Link to post Share on other sites
geoffsmith 21 Posted July 22, 2007 Author Report Share Posted July 22, 2007 (edited) Thanks for that Artie and James, very interesting. Edited July 22, 2007 by Geoff Quote Geoff SmithLotusElanCentral.com and BOLLECKS† founder[†Bristol and Outlying Lands Lotus Elan Central Knowledge and Support] Link to post Share on other sites
Artie 6 Posted July 22, 2007 Report Share Posted July 22, 2007 Thanks for that Artie and James, very interesting. Quote 89 White Esprit SE...a few little upgrades....93 RX7.....Silverstone....slightly modded...Muahaha...New Addition:1990 300ZX TT......Hmmm Link to post Share on other sites
ed12231980 0 Posted March 22, 2016 Report Share Posted March 22, 2016 Hi I need a new turbo ecu for my elan how can I find one Quote Link to post Share on other sites
sailorbob 263 Posted March 22, 2016 Report Share Posted March 22, 2016 From the information in this thread if your Memcal is OK then you can swap it over into a GM 01228707 ecu. There's usually a few for sale on eBay. Quote Link to post Share on other sites
Vulcan Grey 251 Posted March 23, 2016 Report Share Posted March 23, 2016 If I recall correctly... The USA Elan turbo with a catalytic converter used a different ecu (2 connections I think) This is the non cat version This is the federal cat version Quote Travis Vulcan Grey 89SE My Lotus Photo and Projects Album Link to post Share on other sites
sailorbob 263 Posted March 23, 2016 Report Share Posted March 23, 2016 It looks like the turbo Elan uses the same ecu hardware as the Isuzu 1.6l Piazza / Impulse turbo then (which makes sense as it's the same engine). Quote Link to post Share on other sites
MrDangerUS 121 Posted October 1, 2016 Report Share Posted October 1, 2016 (edited) What are the specific differences between FreeScan, TunerPro and EspritMon? Which version of Windows is required/work with them? Which one would work with Win 7 or Win 10? Edited October 1, 2016 by MrDangerUS Quote Link to post Share on other sites
eriks4 9 Posted October 7, 2016 Report Share Posted October 7, 2016 Espritmon works on Windows 7 and 8. I haven't tested it on Windows 10 yet, but there is no reason why it would not work. The only potential issue is that most computers no longer have a real RS232 port (which you typically use to connect a serial to ALDL interface). Many of the available USB to serial interfaces only support the standard baud rates, i.e. 2400, 4800, 9600, 19k2 etc. and not the 8192 bits/sec needed by the Esprit ALDL. So if you have a DIY RS232 to ALDL you may run into an issue with a USB to RS232 cable. For Windows 7 there is a registry hack for a particular chipset used in many USB to serial converters (described in the Espritmon manual). Some other chipsets (RTDI) do support non standard baud rates. So, it comes down to what converter cable you buy. Clearly the folks selling USB converter cables to connect to the ALDL (USB to ALDL, typically with RS232 in between) have solved this issue for their cable. In that case Espritmon will run on Windows 10 if the cable supports it. Hope this helps, Erik Quote Link to post Share on other sites
Gold FFM Escape 776 Posted October 7, 2016 Gold FFM Report Share Posted October 7, 2016 I find Freescan easier to use, but Espritmon gives more (and apparently more accurate) information and graphs. I've not used TunerPro on the Esprit yet, but it works great on the Range Rover (with a stand alone ECU). Quote I have made many mistakes in my life. Buying a multiple Lotus is not one of them. Link to post Share on other sites
swindon_alan 1,693 Posted September 6, 2017 Report Share Posted September 6, 2017 Does anyone have a scrap/faulty Delco ECU they could let me have or borrow please? I'm working on my V8 low cost ECM replacement project and have started to think about commonality with a 4 pot version... Quote I tempted fate...now my Esprit V8 IS in bits...(sob) Link to post Share on other sites
Chillidoggy 4,340 Posted September 6, 2017 Report Share Posted September 6, 2017 Presumably you'll need two of them if it's a V8. 1 Quote Margate Exotics. Link to post Share on other sites
swindon_alan 1,693 Posted September 7, 2017 Report Share Posted September 7, 2017 Nah, I will take an axe to a V8 one Ian... Quote I tempted fate...now my Esprit V8 IS in bits...(sob) Link to post Share on other sites
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