Bavarian Autosport sells the Conforti chip which I heartily recommend. It transforms the eta motor - don't plan on using less than full premium fuel though. With this chip and shorter gears, an eta car is quicker off the line and around town than it's "i" brother. I'm interested in adding a chip for my 87 325 w/2.7L to increase hp/performance. Anybody have some good sources or info on 'performance chips' for my car. I've looked at Bavarian Autosport catalog and they offer one with an increase HP of 121 to 140. Is this accurate info? Or should I consider the every-so popular Dyno chip? Thanks for info.