Permatune?, Good, bad or ugly? Options

[Lawrence]

I posted on the 914 Rennlist about Permatune.

I put mine in the 914/6 yesterday, and went back in to finish my beer. When I drove to work today, I noticed low power, hesitation and even a bit backfiring.

The consensus on RL was that the Permatune unit is a POS.

Truth? Group-think? Myth? Rarely do I hear a COMPLETELY negative response about a product or supplier.

-Rusty

[Lawrence]

Here is an email I traded with the Permatune tech support. Is his response technically accurate, or a salesman trying to avoid a return?

-Rusty (IMG:style_emoticons/default/flag.gif)

--- Begin Email ---

Gentlemen,

I recently purchased a Permatune CD box to replace the stock unit in my
1970 Porsche. The car was running fine before I disconnected the old
Bosche unit.

I installed the Permatune CD this weekend. After installation, the car
responded with low power, hesitation and a bit of backfiring.

What is going on? Do I have a defective unit?

thank you,
Lawrence


--- Prompt Reply ---

Hi,

No, I do not think the unit is bad. Remember that the Perma-Tune unit is a high performance unit, it is not a stock unit like the Bosch. What you are experiencing is probably breakdown in the high Voltage circuit of the spark plug circuit. The Perma-Tune puts more power through the circuit so minor short circuits that you may not have noticed before become more evident. Run the engine at night with the engine cover open and you will most likely see the forth of July under there.

The problem could be in the coil, rotor, cap, spark plug wire ends (resistors), the wires themselves or a cracked spark plug. The best way to figure out what is going on is to perform the usual trouble shooting procedures instead of just replacing parts. Here is a link to more information:

http://www.perma-tune.com/Technical%20Supp...porsche/911.htm

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