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edison0594
03-16-2004, 04:07 PM
Does anyone know if a performance chip (diablo) can cause engine failure in a 2001 Cobra that's naturally aspirated, no forced induction, and no internal engine mods. I bought the chip to calibrate my speedo and fix the check engine light. Of all the chip manufacturers I've spoken to, none say it could have been the chip. Any opinions would be greatly appreciated.

Firme
03-16-2004, 04:18 PM
a chip can cause engine failure on any car if it is not spec'd correctly to the car and causes the engine to operate outside acceptible parameters, such as A/F ratio. Its just that naturally aspirated cars that aren't running obscene compression have a higher tolerance for failure than a blow/turbo/n20 car.

Lumpydogs
03-16-2004, 04:34 PM
I agree with Firme. A bad chip could cause detonation due to air/fuel or timing. A very agressive chip combined with lower octane gas could
cause detonation also. Engines don't like detonation!

Did the engine have any other irregularities prior to failure, i.e. pinging?
Did the engine fail after being at or near redline?

I'm not saying that the chip caused your problem, but asking the chip
manufacturers is like asking the fox if he ate the missing chickens.

Sorry to hear about the engine.