I have a 90 with the usual crap heater - you know the one that blows like its on 60 Marlborough Red a day! (and it smells like it too!)
Someone on this site knows of an upgrade that confuses the system and makes the fan motor think its getting more power, therefore it blows harder! I just cant find said person .......... any help would be much appreciated.

just change the matrix for a 2008 model.

Sounds like a plan - does it just "drop in" (obviously with the assistance of the WD40 to make it slip in & Duck Tape to make it stay!)