Well, since I purchased my '96 850R I knew I'd want to upgrade the ECU. Since the beginning of September, I've scoured for information on upgrades, companies and horsepower claims. Thus far, I have to say that I'm very dissapointed with the whole process...here's my thoughts/experiences with several chip/ECU upgrade companies:<p>BSR/Engstrom -- great promises of hp increase; but unfortunately they are very non-reponsive, first told me two weeks but now don't return calls or emails (I've heard from others this is the norm for them).<p>RICA -- again, great promises of 300+ hp gains but very difficult to deal with from the U.S. I called them, emailed them...they twice requested my Bosch ECU number only to never hear from them. Sent another email tonight asking why the problem with confirming an order.<p>IPD -- great company and regarded as dependable ECU upgrade...but come on!...275 hp for $895 when I can get the same or more for less?? I have trouble with paying that much and not getting over 300 in neither hp or torque!<p>There's several others out there I've contacted...Unichip, SAM, Upsolute-Dallas. Of these, they either didn't respond to email, didn't know what "854" meant, quoted European-manual version hp numbers, or had never *really* done a Volvo.<p>Wetterauer may be an option...they quote same hp gains as IPD but torque is over 300. Plus, you keep your original chip and can switch out yourself...for $100 less than IPD. There turn-around is quick and they sound ready to go. Anyone have dealings with them??<p>Many thanks for thoughts and input on experiences with the above...or suggestions on others I haven't mentioned!