I have heard arguments for and against Permatune. Based on my own opinion only, I think that the Permatune units get somewhat of a bad rep. They are often swapped in when there is an ignition problem, and if the problem isn't with the Bosch system, then they are swapped into a broken or troublesome system.
Lonnie Lenarduzzi (Permatune) does seem to have an uphill battle in the Porsche world.
Here is some info he sent me a long time ago when this issue came up:
"
972 442 6774 is the tech help phone line, direct.
service@perma-tune.com is the tech help e mail.
Perma-Tune will analyze any ignition ever made under the Perma-Tune name
free of charge. Refer to our warranty for more info. Please ask customers to
contact us for a reference number before sending their units in for testing.
Here is a link to our warranty.
http://www.perma-tune.com/Warranty.htm
Here is a link to our serial number code.
http://www.perma-tune.com/manufacture_date.htm"
Lennie sent me the following info as well:
"Furthermore, for every Bruce Anderson out there I can show you 100 people
that have the opposite opinion about Perma-Tune. For starters, just ask the
guys at Gunnar Racing what they think. The reason they chose to put our
products on 917 and other priceless Porsche cars is because they understand
the technology. We support our product and help them win races, the bottom
line.
Want more? Jerry Seinfeld and Bobby Rayhaul (Spelling?) both love how their
cars run with my box. Bobby is putting them on all his Porsche and Ferrari
cars after we did his 917. Jerry liked how his 911RSR ran so he is putting
them on his 917. The list goes on and on but you get the picture."
Just posted for FYI only...
-Wayne