We are going to set it up on Saturday morning before we go to the racetrack.
As we did, Short video here http://www.youtube.com/watch?v=T7LfXkOVOYg [
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As you can see the conditions were not all that good with a damp track, it was actually raining when we arrived there [
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After a technically successful sortie to the Nordschleife I thought it made sense to find out what I was playing with, so the Golf headed up to Interpro in Thornbury, for a power run:
Diagnosis by the operator = crap map. The Digifant map simply can’t keep up with the crossflow’s breathing.
Only one way around that (in my mind). Time for independent throttlebodies and Megasquirt:
Got these
Just taken delivery of a box of electronic components that will be built into an ECU shortly.
I also have to purchase a custom stub inlet manifold
In the interim I’ve got an MOT to get through, then the next ‘ring trip 12-16th September.
The ITBs and MS won’t be happening until this winter.
It’s always nice to get some thanks about helping out people who quickly need software for their project.
We’d tried to help out as much as possible, but i guess that was not sufficient for this project.
Normally when a dynoplot is posted, the dyno-place and the owner’s car’s plate are stated.. non whatsoever on this plot. Very strange.
Digifant 1 and 2 are more than capable of handling the hardware which is inside most cars. If some don’t agree, then write to volkswagen and say you can do better with a stand-alone management, concerning all aspects the ecu handles.
A proper on-the-car-adjustment will do magic. And don’t forget, 8v and 16v engines don’t really like to rev over 7000rpm for max performance. This is exactly where you want to be with a golf syncro. Low revs and high torque.
Due to some other factors with the project (f.e. time) the outcome was not mindblowing, but still satisfying if we read other posts on other websites, by the owner of this specific car.
Expecting 150-160bhp out of the box of a trial and error project isn’t fair to expect, crankpower is indeed in that figure in.
This will come in time, if the software is adjusted to the engine. The power is indeed available, only a real-time-eprom-emulator+rolling road will get it to the expected power figure. Even on digifant 2.
This is the only way of configuring these kinds of engine-projects. As you where quite HASTY to get things sorted before the trackdays, I’d quickly selected a SAFE chip, which did magic to a 1.9 cabriolet over here with g60 green injectors. So don’t write-off the hardware instantly, as it’s still very useable. It’s all software where the problems lay…
Even with Megasquirt you’ll be adjusting it for a while, as no base-map that is already 90% is there to start with. Don’t think you’ll be at 100% performance within 2 days of adjustment on the road.
Remember, vw-motorsport got their rallyegolf on digi-1 to 300bhp..
Quite a astonishing level of power. Digi-2 is a little brother of that first development. So when everything is mastered, and time was not such an issue, then a better performing engine was there.
If you ask a professional chiptuner to write software for your car, like Steve of Pitstop development, or JD out of holland, I don’t think this story was here.
They can dial in digi 1 and digi 2, only the’re quite busy guys… so an appointment within a few weeks is an issue
I’d like to see the results from that engine on throttlebodies and megasquirt… tb’s don’t unleash that much more bhp’s. Mostly it’s all abouth timing. Fuel and ignition. Add info abouth the rolling road facility also, plus some pictures. That would be nice….
And remember, a 1050+ kg. car needs torque from low down.. This is where 8v’s stand out against 16v’s (abf-standard-cams do not really get it better going than 8v mild cams low down). If there was a compressor on it, it would be even more interesting. then a awesome powerpackage is there. New problems will then be encountered… The drivetrain…
Volkswagen motorsport also used a 8v engine in their werks-rallyegolfs (also syncro, but with BEEFY diffs and titanium centershafts) and they had no problem with low-down and mid-range torque.
Pascal
