Does the Kuehl Condenser system upgrade eliminate the Porsche 911 or 930 factory deck lid condenser or front condensers?
No. The Kuehl Condenser’s supplement the stock factory Porsche condensers, they run in series with the stock Porsche condensers. For earlier 911’s, typically before 1978 when these cars more frequently came with factory air (front and rear deck lid condensers), the 911 had just the engine deck lid condenser. For these early Porsche models we recommend the rear ward main Kuehl unit and the Duehl Kuehl unit running is series with your existing deck lid condenser: so you would have 3 condensers, the original Porsche deck lid unit, the Kuehl and the Duehl Kuehl upgrades. For Porsche 911 and 930 models from 1978 through 1989 with factory air (two orgininal condensers), we recommend, depending upon how hot your climate region is, color of car, etc. typically adding the rearward Kuehl unit, so once again you are running 3 condensers. For extreme cooling upgrade requirements you would use both Kuehl condenser units so you would have 4 condensers.