VHPD Emerald map files wanted

Topics relating to the Lotus Exige S1 (series 1)
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deggles
Posts: 187
Joined: Tue Feb 26, 2008 12:22 pm
Location: Leeds

Does anyone have Emerald map files for a VHPD Exige that they're willing to share?

I've had to swap to an Emerald K3 after my original ECU developed a fault :( Car is pretty standard, 190 cam timing with a silenced decat. It drives ok with a custom map copied from @pmyhill's car but could be better at low revs/part throttle. Could be down to exhaust system differences.

Ultimately I want to fit some verniers and get it timed and mapped properly, but hoping for something a bit more usable in the mean time and I have three switchable map slots to experiment with!

Many thanks!
Dan
winthattt
Posts: 1073
Joined: Fri Feb 12, 2010 4:45 pm
Location: Sunny Derbyshire

I have got one from my 190 with verniers(otherwise std). It never worked very well but you are welcome to it. PM me your email and I’ll send it over. You may have better luck than me. I went back to the std ecu, much better.
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deggles
Posts: 187
Joined: Tue Feb 26, 2008 12:22 pm
Location: Leeds

winthattt wrote: Thu Apr 08, 2021 4:41 pm I have got one from my 190 with verniers(otherwise std). It never worked very well but you are welcome to it. PM me your email and I’ll send it over. You may have better luck than me. I went back to the std ecu, much better.
Thank you, you have PM. I read with interest your various threads/comments, it does seem Lotus actually did a pretty good job on the mapping. Unfortunately I've not found anyone able to repair my original ECU :(
winthattt
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Joined: Fri Feb 12, 2010 4:45 pm
Location: Sunny Derbyshire

I’ll send it tomorrow. Use map 1. That was done on the rollers. My car did make 187hp, if you believe the dyno! I never managed to get my car through the Mot with the map but it did run ok once warm with all accessories off. My car has the iacv so it is used that for idle control (and ignition advance). If you don’t have the iacv fitted you will need to turn it off. My car had verniers, they were set on the rollers.
ortope
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Joined: Sat Jun 13, 2020 11:40 am
Location: Switzerland

deggles wrote: Thu Apr 08, 2021 11:04 am Does anyone have Emerald map files for a VHPD Exige that they're willing to share?

I've had to swap to an Emerald K3 after my original ECU developed a fault :( Car is pretty standard, 190 cam timing with a silenced decat. It drives ok with a custom map copied from @pmyhill's car but could be better at low revs/part throttle. Could be down to exhaust system differences.

Ultimately I want to fit some verniers and get it timed and mapped properly, but hoping for something a bit more usable in the mean time and I have three switchable map slots to experiment with!

Many thanks!
Dan
You should check the timing of the engine first: The timing of my VHPD was horribly wrong!

How it should be:
Image

Note the difference in the setting:
Image

Cheers
# S1 016
winthattt
Posts: 1073
Joined: Fri Feb 12, 2010 4:45 pm
Location: Sunny Derbyshire

You have my map(s) now. Enjoy. I had a quick look at the maps and I would play around with the three choices. I think the maps are the same but I was messing about trying to get good idle control over temp/pressure/loads and gave up. Map 1 is fully open loop and does not use the IACV or ignition advance, it's a race car map!
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deggles
Posts: 187
Joined: Tue Feb 26, 2008 12:22 pm
Location: Leeds

winthattt wrote: Fri Apr 09, 2021 12:31 pm You have my map(s) now. Enjoy. I had a quick look at the maps and I would play around with the three choices. I think the maps are the same but I was messing about trying to get good idle control over temp/pressure/loads and gave up. Map 1 is fully open loop and does not use the IACV or ignition advance, it's a race car map!

Thanks again, had a play this afternoon and got your map loaded in, drives pretty well although haven't given it a full-beans run as it's been snow flurries on and off al day :roll: . Best results seemed to be:
* stick to open loop at all rpm - I did have it set to run closed loop at light throttle and low rpm, which is mostly where it was misbehaving and popping excessively :oops:
* IACV enabled below 1600rpm which helps the idle - it was around ~800rpm without which felt a bit low
* no fuel cutoff on overrun, oddly it's less pop-and-bang-y this way

As suggested I should really get the timing properly checked, that's on the list along with checking for any exhaust leaks which might be contributing to the popping.
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andybond
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deggles wrote: Sun Apr 11, 2021 5:36 pm
winthattt wrote: Fri Apr 09, 2021 12:31 pm You have my map(s) now. Enjoy. I had a quick look at the maps and I would play around with the three choices. I think the maps are the same but I was messing about trying to get good idle control over temp/pressure/loads and gave up. Map 1 is fully open loop and does not use the IACV or ignition advance, it's a race car map!

Thanks again, had a play this afternoon and got your map loaded in, drives pretty well although haven't given it a full-beans run as it's been snow flurries on and off al day :roll: . Best results seemed to be:
* stick to open loop at all rpm - I did have it set to run closed loop at light throttle and low rpm, which is mostly where it was misbehaving and popping excessively :oops:
* IACV enabled below 1600rpm which helps the idle - it was around ~800rpm without which felt a bit low
* no fuel cutoff on overrun, oddly it's less pop-and-bang-y this way

As suggested I should really get the timing properly checked, that's on the list along with checking for any exhaust leaks which might be contributing to the popping.
Also check the intakes for leaks. popping tends to be from leanness as the fuel / air mix is out due to inlet leaks in my experience.
winthattt
Posts: 1073
Joined: Fri Feb 12, 2010 4:45 pm
Location: Sunny Derbyshire

It was mapped by Dynotech in Ripley Derbyshire. The guy who runs the dyno appeared to know his stuff and makes his own ecus.
ortope
Posts: 115
Joined: Sat Jun 13, 2020 11:40 am
Location: Switzerland

deggles wrote: Sun Apr 11, 2021 5:36 pm
winthattt wrote: Fri Apr 09, 2021 12:31 pm You have my map(s) now. Enjoy. I had a quick look at the maps and I would play around with the three choices. I think the maps are the same but I was messing about trying to get good idle control over temp/pressure/loads and gave up. Map 1 is fully open loop and does not use the IACV or ignition advance, it's a race car map!

Thanks again, had a play this afternoon and got your map loaded in, drives pretty well although haven't given it a full-beans run as it's been snow flurries on and off al day :roll: . Best results seemed to be:
* stick to open loop at all rpm - I did have it set to run closed loop at light throttle and low rpm, which is mostly where it was misbehaving and popping excessively :oops:
* IACV enabled below 1600rpm which helps the idle - it was around ~800rpm without which felt a bit low
* no fuel cutoff on overrun, oddly it's less pop-and-bang-y this way

As suggested I should really get the timing properly checked, that's on the list along with checking for any exhaust leaks which might be contributing to the popping.
Please let us know how the timing of your engine was originally set when you will check it.

Have a nice day.

:thumbup:
# S1 016
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