Been out in the Delta-Motor supercharged Speedster this afternoon.
Summary:"Want you, need you, got to have you, child – great God in Heaven you know I do!"
I'm very, very happy with what I found.
Firstly, the car remains completely civilised - every day use no problem whatsoever. By this I mean there is no obtrusive noise, no erratic running or response. IMO it is really well sorted.
Secondly the car feels "right" - the increased performance is readily accepted by the chassis without any drama.
Thirdly, changing from the N/A, you are not overwhelmed by any aspect of it – the characteristics are similar to a larger capacity N/A – it simply feels meatier. Meatier than the N/A and meatier than the Turbo. I know it's a subjective thing and down to personal taste, but I found the power delivery with the supercharger far more satisfying than the "little engine but push me and I'll wake up" feel that turbos, including the VXT have. The supercharger really suits the car better IMO.
After trying the Turbo at Boxberg testing ground early in the year, I felt happy to be in the N/A with its sublimely controllable throttle response – I personally feel more "at one" with the car in the N/A because of this. A major question for me was how the supercharger would feel, would it loose the subtle magic for mere extra horsepower? Never having driven a supercharged car before, I wondered if it would feel "forced" when you just want to cruise. All my fears were groundless.
With the top off and the sun out, I've been pottering around town, cruising lakeside lanes, blasting down empty back roads between open fields where I "dreamed" that I was hitting around 185kmh in no time in situations that I reckon I would only see around 165kmh in my N/A dreams
Put it this way… I'm hoping to do more than just catch and outbrake the poorly driven 911 Turbos into corners now - they'll have to do a little better to reel me in again on the straights
. And this is all on a standard exhaust and I'm sure there's room for more bhp after the official test - might even worry the well driven 911 Turbos! 
Anyway, situation is this. The kit is finished but can't be sold for use on Swiss cars yet because of outstanding exhaust emissions test. Although EURO 4 that VX/Speedster complies with is not compulsory, GM tested it as EURO 4 for its Swiss approval and the authorities have decided that tuned cars must maintain the emissions norm reached by the standard car. This meant more work and delay, but now they are ready and waiting for the test....
officials take their time.What this means is I can't get one yet, but you UK types could. Talked to the boss, Felix Wyder, today and he said would need it for 3 days. He said a week when I mentioned UK interest in Spring, so they must have got it more sorted now, but I would reckon on a week to be safe. If you wanted a kit, he reckons it's fairly starightforward to fit - you'd have to sort something out re. shipping, warranty & price.
Cost for Swiss customers for supply and fitting, including VAT @ 7.6% and official registration of tuning with authorities is around 10,500 Swiss francs.
No figure for weight of the supercharger and bits and pieces, but mechanic reckoned around ten kilos - seems about right.
Asked for power graph - boss said he really wants to wait until emissions test cleared then send me one. They did have one on a broschure I've got from early on when they were talking about 195-200bhp. Now they say 200bhp "officially", actually 205-211bhp (mechanic says they've seen 220 under good conditions - but I wouldn't reckon on that) and 250- 270 Nm torque over a wide range. Really don't think they are trying to hide anything, the boss just likes his things to be "right" I think, so wants to wait till all is approved in current tune for Switzerland use before printing final figures.
Obviously, no-one wants to buy if they don't know these figures. He'll be letting me know when it's all approved and I'll pass it on here.
The test car was on new Delta-Motor rims and Dunlops: front 7x17" with 205's, rear 8x18" with 245's - I'll post piccies below. As the rubber was new, it wasn't fully usable I suppose, but felt quite good apart from the accentuated tendency to follow any road imperfections. Not too happy about that - still think front 16" on 195's as per Ricky's set-up is the way to go. I asked the boss about 16" fronts but he says he got so many requests for 18" rears (typical, I'm afraid), that he went that way. Agrees more unsprung weight probably. Has not compared rim/tyre weight so no figures, he could do if someone really needed to know.
I'm convinced it's the right way to go for me and hope to have it all sorted by next Spring. I'm almost certainly going to get the Ohlins suspension fitted at the same time and probably Opel drilled discs (their Brembo package is not finished yet).
The car I drove was still on standard suspension with the new rims. Took these pics today:
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– didn't realise the GM alteration meant 17" truly better.
POS forum I reckon 
For a moment I thought I'd been 
