also realize that any significant increases in power from tuning (i.e. a chip, advance key, or aftermarket ECU) frequently comes as a result largely of timing advance. this requires a higher octane fuel in order to achieve those gains. at a minimum you will have to run 91.
another thing to consider is that due to the timing advance of the above, if you have carbon buildup in the engine, the compression will go up. that means an increased likelihood of detonation.
forced induction is really the only way to get any real power out of a 944, and even then, it is limited with regards to what you can actually use, as it would mean a lot of other upgrades across the car having to be done
better to make sure everything is up to snuff, and then spend some serious seat time with an instructor on a track. then you will be able to appreciate what the 944 can do.
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