[Shotimes] What causes power loss?

[dean james]

The timing belt can stretch a bit, and if the timing is slowed down by crank 
cancer then you will lose major power.  Otherwise I think the only problem 
could be problems with some of the sensors feeding improper fuel mixtures.  
Unless something like this is wrong, the older cars seem to run as good as 
when they were much newer.


>Now, six years and 50K miles later (My god,
>has it been that long?), it just doesn't seem as strong, despite the
>upgrades over time: deletion of the lower air box, addition of a K&N panel,
>73mm MAF, Hypertech chip and cat-back exhaust.  Last year, before the MAF
>upgrade, I had it dynoed and it hit stock wheel hp and tq only with the 
>chip
>installed, and had a very jagged curve.  What causes this type of
>degenerative power loss?  Can I ever hope to get it back?  I am thinking a
>shim adjustment and possibly timing belt replacement could be in order.

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