Citroen CX GTI Turbo Engine Management

Citroen CX GTI Turbo Engine Management

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Discussion

Bilkob

Original Poster:

75 posts

102 months

Wednesday 6th January
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So, a fantastic day today for this project. The bespoke loom, ECU, new injectors, all new sensors, fuel pump and filter, turbo, radiator, clutch, diesel gearbox, turbo and boost plumbing etc, etc....all came together and IT WORKS!!!!!!!
Ignore the messy wiring and layout, I just wanted to get it running. A massive thank you to Karl at Emerald tuning who has been superb all the way through.
A CX GTI Turbo 2 now running on completely new engine management.
No more air flow meter, AEI or fuel computers, old wiring, etc and fully map-able and adjustable boost.
A very good day!!!


Edited by Bilkob on Wednesday 6th January 16:44

rickygolf83

206 posts

128 months

Tuesday 12th January
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Amazing progress, turned your dream into reality biggrin

Bilkob

Original Poster:

75 posts

102 months

Wednesday 13th January
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Well, I’m getting there. I’d not really thought about how hard it would be doing this outside, on a gravel drive, I used to build Group C cars in a beautiful heated workshop...... but I’m determined to see this through.
Will hopefully have the hydraulics up and running by the weekend, then it’ll really feel like progress.
ONWARDS!

Bilkob

Original Poster:

75 posts

102 months

Wednesday 20th January
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Bilkob

Original Poster:

75 posts

102 months

Wednesday 17th February
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So, lots more progress. The car now starts, runs, drives, brakes, all hydraulics seem to be working, steering self centres, etc.
I’ve had a first installation of the new heat A/C unit, and after plumbing it into the water system and jury rigging a switch inside, I now have a SRTONG blast of interior hot air on a CX. A first!!
Also now have all lights, etc now working.
Next up is to finish engine bay wiring for good, tidy/rationalise central console wiring nest, service front brakes, fit drivers seatbelt then it can’t be far off an MOT!
Then it’s new bespoke stainless exhaust system, then............PAINT!

Bilkob

Original Poster:

75 posts

102 months

Wednesday 17th February
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stevieturbo

15,488 posts

214 months

Wednesday 17th February
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I would generally avoid routing HT leads in parallel, and in direct contact with each other. At least try and give them some sort of air space between them all.

Some will get away without issues, some will not.. Although if it still retains a dizzy, potential crossfire issues may be less.

Bilkob

Original Poster:

75 posts

102 months

Wednesday 17th February
quotequote all
That’s the clever bit. They’re not H/T leads. It now runs coil on plug units, Denso, from a GSXR1000.
No distributor or coil pack as such. All run from Emerald’s bespoke ECU. No air flow meter, no Sparks computer(AEI) no fuel computer.
Emerald’s car is now running 1bar boost and churning out 300lbs ft of torque, I’ve fitted a turbo diesel gearbox and uprated clutch, if it’ll drag it’s old arse through the air it SHOULD do 150mph.
The sheer wiring in the two redundant looms is astonishing, I expect the same amount to be removed from the ‘climate control’ wiring and looms inside.....
Mind you, it might blow up too...😂

Huff

2,714 posts

158 months

Wednesday 17th February
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Loving this! Wonderful car and project.

Bilkob

Original Poster:

75 posts

102 months

Wednesday 17th February
quotequote all
Thank you. I’ll keep posting, and if all goes well, there’s a road trip to Gaillac in August planned to deliver (another project..) Look bike to keep at a friend’s and ride down there.
Please, no one soil this thread with COVID or Brexst garbage.

stevieturbo

15,488 posts

214 months

Wednesday 17th February
quotequote all
Bilkob said:
That’s the clever bit. They’re not H/T leads. It now runs coil on plug units, Denso, from a GSXR1000.
No distributor or coil pack as such. All run from Emerald’s bespoke ECU. No air flow meter, no Sparks computer(AEI) no fuel computer.
Emerald’s car is now running 1bar boost and churning out 300lbs ft of torque, I’ve fitted a turbo diesel gearbox and uprated clutch, if it’ll drag it’s old arse through the air it SHOULD do 150mph.
The sheer wiring in the two redundant looms is astonishing, I expect the same amount to be removed from the ‘climate control’ wiring and looms inside.....
Mind you, it might blow up too...??
The picture certainly looks like HT leads.

Bilkob

Original Poster:

75 posts

102 months

Wednesday 17th February
quotequote all
Silicone shrouds over 2 wires to feeds the coil on plug units. Deliberately made to look like the original leads

stevieturbo

15,488 posts

214 months

Wednesday 17th February
quotequote all
Bilkob said:
Silicone shrouds over 2 wires to feeds the coil on plug units. Deliberately made to look like the original leads
Haha, very nice.

seveb

268 posts

40 months

Friday 19th February
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Lovely car and a lovely conversion, what a great project. Also nice to hear Emerald is still delivering, really nice people. I remember a very long time ago Dave Walker writing in Car Mechanics magazine that he'd been really impressed with the performance of a car and that it had an ECU not carbs, and that he intended to spend some time learning more about ECUs. He did that didn't he !

Bilkob

Original Poster:

75 posts

102 months

Friday 19th February
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Emerald-Karl- have been utterly superb. Everyone else said I couldn’t do this , Karl understood immediately, it did help that he has one there......
They also get that this will be no hot-rod, but a wafty whooshy continent hoover, but it will have a decent amount of grunt!

stevieturbo

15,488 posts

214 months

Friday 19th February
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Don't see why anyone would say you couldn't do it, let alone everyone. It's all pretty straightforward stuff.

But a cool and different project and neatly done.

Bilkob

Original Poster:

75 posts

102 months

Friday 19th February
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It was getting the crank trigger signal to ‘work’ Apparently its an odd number of flywheel teeth. This set up still uses a signal from the original crank trigger, rather than have to drill the flywheel for a ‘slug’ or run something off the camshaft...

Huff

2,714 posts

158 months

Friday 19th February
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Bilkob said:
They also get that this will be no hot-rod, but a wafty whooshy continent hoover, but it will have a decent amount of grunt!
Exactly the reasons I think this is ... a wonderful project: take all that was special about the original, and just amplify it, sui generis.


Heartening to read you've had such great support, too. Looking forward to reading about where you go next smile

Bilkob

Original Poster:

75 posts

102 months

Friday 19th February
quotequote all
Thanks. I’ll keep posting. I am determined to drive this to the South of France before year’s end

Bilkob

Original Poster:

75 posts

102 months

Sunday 28th February
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More progress. I now have all lights, horn, etc working, so I THINK that’s most of the MOT-able electrics done. I’ll do another brake bleed now that the hydraulic system has settled down, it’ll let me run more new green magic fluid through the system. The engine bay is 90% there now I think, and because the custom heater unit is now so compact and hidden mostly behind the centre console, it looks like I CAN run the spare wheel under the bonnet as per original.