Quote:
Originally Posted by DannoXYZ
Yeah? Wanna post some before & after dyno-sheets of a 944NA that'll give you 7-8hp with just a chip-swap? There's a HUGE group of guys who race 944-spec and I have yet to see a single dyno-chart that has that much gain from just a chip. And I assure you, these guys know ALL the tricks on getting more power out of a 944NA and the best bet is to install the 10.6:1 euro-pistons and shave the head LOTS to get 12:1 compression. Even then, that's only worth about 10hp. And yeah, you gotta run 98-100 octane fuel all the time.
More realistically, you can count on 3-4bhp gain with NA chip-upgrade and plan on using 91-octane full-time.
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I would bet 12:1 compression would net a bit more than 10 hp from the standard 9.5:1. Porsche gained 8 hp for the '88 model year by increasing the CR to 10.2:1.
Pelican Parts: Porsche 944 Model Specifications
I'm pretty sure it's possible to get 5 hp or slightly more with a hotter tuning like the 944MAX 93 octane tune, especially with no cat. I know the 91 octane tuning of the 944MAX is supposed to gain about 2-3 hp on the top end with an open exhaust, and mine did seem to run stronger with no cat and a higher flow muffler. Really, the whole point of a good chip is to increase the area under the curve, not just to get a couple extra hp up top to brag about. The stock part throttle maps suck compared to the 944MAX tuning. The next place to look for power in the NA is the cam, and a good tuning to go with that.
Oh, and emphasizing more than 2 things with all caps in one paragraph is kind of annoying...