Citroen CX GTI Turbo Engine Management

[Bilkob]

Oh, and don’t panic, I do have a plan for the air box/air intake, that’ll be next.

[stevieturbo]

fesuvious said:

This is something Bailey Performance (Dale) could easily master.

He's an Omex & Megasquirt wizard.

Kind of irrelevant though since it is already up and running on Emerald some time ago.

[stevieturbo]

fesuvious said:

See now that's what happens when you've been up with a 2yr old most of the night and had sod all sleep

That's a hell of a list of cars you've had !!!

[twibs]

fesuvious said:

This is something Bailey Performance (Dale) could easily master.

He's an Omex & Megasquirt wizard.

I know where you are coming from having used him to map my megasquirt. I swapped Bosch K E for megasquirt and Dale got some good results from the cvh.

[Bilkob]

The Citroen runs perfectly on Emerald’s K6 , not even been on the rolling road yet. Karl (at Emerald) said it was an ‘odd, easy’ engine to map. It’s a 2.5 litre pushrod lump that doesn’t really rev, but they’re oddly smooth. Sort of half an American V8 with a turbo bolted on.

[Bilkob]

More progress. After having the old airbox shotblasted I’ve ‘carbon-ed’ in a length of aluminium tube that completely replaces the old Air Flow Meter. It means I can still run an original air filter and all the idle and ‘emissions’ pipes
Quieter too....

[twibs]

loving the way you are keeping the standard look.

[Dynion Araf Uchaf]

this is an underrated thread. Interesting choice of car to modernise, very cool and would definitely cause a couple of double takes when wafting along the motorway. Suspect it might be a bit wheel spinny with all that power though.

[Bilkob]

Thank you. I’ve had loads of them (addicted) so I kinda know what needs doing and what doesn’t.
It’s not the sort of car that you rush off in, in first or second gear anyway. They’re very strong, almost over engineered, mechanicaly.
The hydraulics, whilst complicated and ruthlessly logical, are well developed and reliable
I suspect for people who like ‘performance cars’ they’d hate a big injected CX, it’s utterly alien to the way most cars feel, and yet, they are so, so capable, fast, smooth and relentless on motorways
And then there’s the styling,again, love or hate.but they seem to be finally getting appreciated
Onwards......with a whiff of garlic and a small green puddle underneath 😂

[Bilkob]

More progress. It’s now up and running and I’m driving it. After attempting to get the comedic handbrake assembly working on the car, I had a suitably Gallic hissy fit and took the whole lot off, fitted new cables and stripped and lubed the ridiculous mechanism and put it all back together. Hey presto a CX with a working handbrake! Also fitted new rear pads and all the retaining hardware.....
I’ve temporarily fitted some 16” Alfa wheels as I don’t want to use my brand new and gorgeous 16” T-Slots until it’s all finished. It seems to drive very nicely, it’s a bit hard to tell as it’s a stripped shell with just drivers seat and a seat belt, but it goes and stops and pulls and stops in a straight line, etc....
It also already seems ridiculously quick, although until it’s been mapped on Emerald’s rolling road I’m taking it easy
The modern heat-A/C unit is now mounted where I need it and the glovebox fits in the original place, I’ve ducted one of the 4 exits to the screen vent and another first for a CX, strong air flow to the screen ducts! I should be able to do the same with the dash vents.....
I’ve made a start on Dynamat-ing the whole interior too, it’s already much quieter. Next stop, a bit more pootling it around and then off for a custom stainless exhaust to be made.
Onwards........!

[Bilkob]

[Bilkob]

[Bilkob]

Nearly full Dynamat-ed interior, my poor thumbs!

More road testing, annoying oil leak sorted(it’s barely a Citroen now.....)
In the next 10 days or so it’s hopefully off for a custom stainless exhaust system to be made, then it’s going to Emerald for set up on the rolling road, eek!
My target is now to drive it, finished, to the World Cycling Champs in Flanders in late September, after which it can self levellingly repatriate dozens of cases of Trappist beer

[Bilkob]

Full stainless exhaust system by the geniuses that are Style Dynanics. Incredible work

[Bilkob]

More solid progress on project CX. The heater A/C unit is now back in for the final time, will re-plumb the water lines and having the two A/C pipes made this week, this means I can ‘button up’ the whole bulkhead area and refit glovebox inside and finish insulation work
I have booked the CX in for paint at the start of July, deposit paid!
With that deadline I’ve started to fit all the good panels I’ve been accumulating, so brand new bootlid (!) and very good bonnet and 4 doors with correct turbo trim and working windows and central locking
A bit of jiggery-pokery and I’m reall pleased with the door fit and trim, panel gaps.

[dontlookdown]

Absolutely superb choice, can't wait to see it finished.

CX is a wonderful car and I would rather have your subtly-updated-but-original-in-spirit CX than any blinged up Porsche/Jag/BMW 'tribute' horror.

Keep up the good work!

[Bilkob]

So, another really big day for this project today. Drove the 140odd miles from home to Emerald in Norfolk for full mapping of the ECU and perhaps a bit more boost....😬
Dave, Karl, Keith and Leoni were all superb. After a few initial shinanegens trying to tie a large floaty front wheel drive barge to the rollers, off we went
After cleaning up the base map and checking temps and pressures, Dave did a base run with cleaned up fuel and spark, and hey presto, around 180ish bhp, pretty much as standard. We ended the day on 215bhp and 275 lbs/ft torque, which is by far the more important figure on these old barges
Drove home again and the car is superb, and, ah, hmm... FAST! It’s just like a CX turbo only more so, it just sort of hauls in the horizon at an increasingly alarming pace. Marvellous. Still lots to do but this was a very big tick. More than chuffed

[Gompo]

Thanks for the update, that sounds great. Probably just about the right amount of output for a significant improvement over standard, but not overpowering.

[Bilkob]

Yes, I think so. It’s only running a very slight increase in boost, about .8 bar so it could easily be ‘turned up’
but it’s plenty for now

[CousinDupree]

That sounds wonderful. Congrats on brining the old girl up to date.