Not really 100% sure which area this project is suited to, so I will try here and hope I don't get told off.
I bought this car about 6 years ago and have never really come a conclusion of where I wanted to take it (or afford to)
So I thought I would just spend a heap of money and time converting to stand alone management because I find that sort of thing interesting, I have the pleasure of working for a exhaust specialist, we are not your standard powerflow, although we do road cars, the bulk of our business comes from motorsport and inconel manifolds on World Rally X cars. I also built and run a Pro Drift Car for my boss. this luckily gives me some space, a good set of tools and some experience to work on the project. Engine wise my car is bone stock, other than the full exhaust system we made here. which features proper merge collectors and a x-pipe to give very good flow and I guess that my choice to upgrade the management will make good use of this.
So far I have taken many things apart to work out exactly where I am going with this, My plans may seem a little obscure as they come from experience with high power Japanese/BMW stuff rather than Porsche, but every part of this project will have been well thought about ( I hope) and based on our experiences (I have some specialists on speed dial if I am stuck) I have included a picture of the drift cars engine bay (sorry its very dirty after a season on being beaten), so you can see what I am used to dealing with and why these air cooled Porsche engines are so obscure to me. If anyones actually interested its about 600bhp but with a ridiculous torque curve as we use nitrous to spool the turbo nice and quick. It also features the VAG coilpacks that I intend to use, I see people complain about them not dealing with heat very well. but after what we put them through heat is not the problem
So the first part of my puzzle is the ECU, I have chosen to fit a Syvecs S6 Plus ecu, reasons being that Syvecs is very tunable (Syvecs is based on the Life Racing units used in LMP) and allows me to run 2x lambda probes with relative ease for a relatively good price.
I will be using KA Sensors pressure transducers for anything pressure related as they are super reliable and accurate. Flying lead is a nice touch to crimp a DTM connector onto also.
Here's the part that some will hate.... E-throttle. I can already hear cries of "why?" "its so slow" "It doesn't feel the same as a cable". The reason is that if setup correctly on a proper ECU (as above) it can be tuned to work better than a cable throttle and so well that you cant even tell its not a cable. It also does away with the linkage and all the idle control junk which makes things alot simpler. in my opinion anyway.
I went for this specific unit because it has the same PCD mounting holes as the intake manifold, although it did need porting out, which retrospectively was more hassle than it could have been, luckily my colleague was avoiding his wife one night and was happy to take on that job.
Also tapped a few holes in the rear for Vacuum reference ports as the OEM stuff is in the throttle body
To make the e-throttle work, it needs a pedal and as everyone knows, these cars never had it from the factory so I had to get creative and create a hybrid that uses the porsche pedal to operate a heavily modified (chopped up) BMW E90 potentiometer and spring set on my aluminium bracket that now bolts into the space behind the pedal. It looks very overkill, but I never want to have to modify it or repair it. plus I had to make sure it wouldn't flex when I get excited with the right foot.
Thats as far as I have got right now, I need to get the inlet manifolds cleaned out of swarf and old oil before I can reassemble them.