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ECU Expedition

G

George Elliott

New member
Bit of an expedition you may be interested in gents,

We have a 1989 944t project which has been laid up in dry storage for 4 years. (We includes my eldest Son)

The plan was to recommission it (new battery, blow up the tyres, replace the Cam & Balancer belts, Oil & Filter change, and wash it), book an MOT (it passed for the 10th time in a row) put 500 miles on it locally, add an EGT fitting in the No4 header, add a wide band AFR sensor, machine a MAP sensor in the intake manifold,


....you will perhaps recognise the direction this is taking.......


book the Belfast / Stranraer Ferry returning 3 days later

480 mile trip out

replace the ECU

Map the engine (no Rolling Road)

480 mile return trip

Brave expedition....?

George
944t



 
I'm sure it'll be fine, but the fuel costs if the map is a bit rough will be on the big side.
 
george where are you based, are you in the mainland and need to get the car back here - i'm a bit confused.

I have a contact the rents transit based car transporters for a very reasonable rate inc insurance and no special licence requirements, much less stressful to get the car back and none of the hassel that comes with using or towing a trailer.
 
sorry Strath, should have said - starting near Enniskillen in N.Ireland, travelling via Scotland A75, M6 South, M5 South A40 west to Augment Automotive for one of Tom Barker's ECU's.

Did the trip 3 weeks ago. I was concerned it may not be so simple, but have a son who could not see any problem with the idea.[8|]

James, sweet as a nut, clear roads and made excellent time [8|], 28.76 MPG on a Promax L2 944t with 147k miles in high winds & rain with H/Lamps up for 80% of the return journey.

Anyway, really pleased with the modification. It transforms the engine in a way that is hard to put into words, but might be compared to the difference between a Chinese watch and a Swiss watch. Both have a round face and 2 hands, both tell the time, but one is sooooo much nicer.

I actually still find it hard to comprehend how well resolved this upgrade is. For example, the first turn of the key on the MAP system was as good as the Motronic. 4 Hours later it was even better, no head scratching, no smell of fuel, no smoke, no odd behaviour, no daft AFR's, just a gentle tapping of laptop keys...[:)]

Cold start the next morning.....every morning since......better than Motronic

The Augment ECU enables further development in a controlled manner as there seems to be so much flexibility.

George
944t

 
Id be interested to hear about the holes that you made and how you plugged them. Possibly with a MAP sensor...? [:D]
 
Bit off topic but takes me back to 7 years ago, took my daughter on her first road trip in my wifes Polo, Christchurch to Scotland, Ferry across and then drive down to Enniskillen to do a job at the airport, she was no more than 3 months old and good as gold! seem to remember my licence was visiting the DVLA so I couldn't hire a car and my wife couldn't go into southern Ireland on her passport - the fact we accidentally crossed the border later in the week notwithstanding!

Back on topic, Is that 3 944 Turbos you now have hiding over there George? I think we need pics and videos! Can you interface with laptop or phone to see live data / make adjustments? Is the car otherwise standard at the moment - any plans?
 
Beaky has had MAP for many years and, as a system, I think it is superb. Regrettably the Link brain behind my system is pretty rubbish but, with a good brain to back it up, it would be great.

Why? Because it is relatively unaffected by air system leaks. If your boost pipe blows off the car becomes a non Turbo 2.5 and you can drive back to the pits rather than have to stop a session and wait for a recovery vehicle (And we know this because...... Paul Smith [;)])

If you have odd leaks from control pipes in your intake system, it makes little difference (assuming the pipe from the manifold to the ECU is good) because it fuels relative to what ever the intake pressure is. It also doesn't get confused by air passing through the induction and being recirculated (or not [;)]) by the dump valve.
 
Power is going to be limited by the turbos ability to move air, but under that limit, it can have been changed beyond all recognition. Id expect that a car with Toms ECU will appear far more powerful to one running an original DME with different settings where they both have the same turbocharger.
 
It is easier to move air if its got less restrictions though, and some aggressive ignition advance will also free some horses, though the L2 chips would have also taken this approach.
Tony
 
Ok so now I'm jealous of turbo drivers... I reckon a modern ECU would work well in an S2, still hoping Tom will find a way (or a will) to do it
 
ORIGINAL: John Sims
If you have odd leaks from control pipes in your intake system, it makes little difference (assuming the pipe from the manifold to the ECU is good) because it fuels relative to what ever the intake pressure is. It also doesn't get confused by air passing through the induction and being recirculated (or not [;)]) by the dump valve.
Click to expand...

This is also saying that air leaking through anywhere between the compressor and the head while the engine is running will cause inferior-than-expected compressor performance therefore inferior performance full stop, which will be difficult to diagnose without pressurising the intake engine not running. Idle may be more difficult to tune depending of the size of the leak, camshaft spec, etc.

Why do you think I have been asking for butterfly shaft seals in the other thread... [8D]
 
I went from stock to toms, was wondering the impression from stage 2 to stage 2 with ecu. More apple's and apple's
 
Me too! (Except the jealous bit - I have the best of both worlds!) - Is there one of those government petition things for Tom to work on the S2 version somewhere?
 
Its a very different ECU as far as I know. Maybe a plug in engine loom and 8v DME will solve the problem?
 

ORIGINAL: 944 man

Its a very different ECU as far as I know. Maybe a plug in engine loom and 8v DME will solve the problem?
Click to expand...

It is very different physically - 3 rows of pins not 2 IIRC. New loom & 8V DME sounds less elegant..
 
Simon, cost as advertised at Augment Automotive, pretty good value in my book when compared to all the options not to mention convenience. Holes..I will try to get some images up.
I know a lad who works at St Angelo 944Turbo, Christchurch is a long way South.
MAP is a concept that has interested me for some time, good to hear you approve John
T3rra, not sure, guess 280 but its just a starting point. Where are you at with power these days?
I go along with that Simon, its sweeter running so feels better but still pretty much as L2
edh, I think it would make a nice car
Why? TTM, as you ask, I had wondered if you had been knife edging your butterfly [:)]
T3rra, "the same but much nicer"

George
944t

 
Running 1.4 bar till tom sends me 4 bar map sensor, still on 26/8 tune so not sure if would suggest the turbo flowing simler levels off air or if it's adjusted. A/f aren't going lean. Need to get some dyno time but 400 hp should be a breeze

I would think there's chance to make gains over the chipped ecu


Tom package is great, what did you do for air intake?

App is useful and toms working on a few extras for it, not sure if he mention any off them . to you?

What size injectors you running?

I got 28 mpg with 80lb but dropped when we changed the fuel pump
 
Is that 3 944 Turbos you now have hiding over there George?
Click to expand...

Tony, I can understand why you might think that.....I prefer to call 'em investments [8|]

All Standard Air Intake T3rra, did mention developments - seems to be a lot of scope for it, Standard injectors.

George
944t
 
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