I decided to try www.TorquingBHP.co.uk for a remap of my 2.0T, as I was getting increasingly bored with just 175 bhp. I emailed them asking for price and output and Darrell Coutinho replied, quoting £300+VAT for an extra 45 bhp and 35 lb ft of torque. I liked the power figures and the cost was much lower than BSR, plus I don't need the PPC as my car's out of warranty so doesn't need the map removing if it goes to a dealer. In addition, Darrell stated that if the remap ever gets wiped, he'd remap for free as long as I own the car.
Took it to Harston in Cambridgeshire for the remap and met Darrell - great bloke BTW. It took about an hour to do the remap. Darrell and I went for a test drive afterwards to see the results. The extra power was very evident and pleasing, but soon after the car went into limp mode and showed the spanner symbol. Back at his base, Darrell plugged in his code reader and printed out the error code for me at no extra charge, and advised that the car was registering a difference between expected boost and actual boost and was possibly down to a leak in a turbo hose somewhere.
I took the car home to get it checked out by a garage, they couldn't find a leak anywhere. Next I changed the turbo wastegate solenoid/valve (£13 from a Saab dealer). This fixed it for a day, but then the problem returned. Next I contact Darrell at torquingbhp again and he asked me to bring it back in today. After advising him of the diagnoses so far, he said there was a good chance that the boost sensor was being too sensitive. So, and here's where it really made the difference that I was dealing with the guy who writes the maps, and not a franchise operation who sell maps written by someone else, Darrell revised the map to compensate for the oversensitivity of the boost sensor, and loaded on the revised map. Another test drive, again with Darrell in the passenger seat, and all is good - no spanner symbols, and lots of extra power in evidence. All this at no extra cost. Power is expected to increase further when I run out of 95 RON petrol and fill up with Tesco 99 RON, and when the outside temperature guage isn't showing 27 celcius!
On both the test drives Darrell noted that the suspension on my Signum seemed unusually "sorted", especially given that it's the standard Vauxhall springs and shocks. All the cars I've owned seem like that, so I think it must just be my Schumacher-esque driving style - smooth but obscenely fast
Anyway, based on my experience, I'd thoroughly reccommend www.TorquingBHP.co.uk , for the quality of their products, value, and most of all for Darrell's help and persistence in getting everything working properly.