Quote:
Originally Posted by 2000mc
I wouldn't normally expect a larger manifold to help low end, but would have been hopeful about the spacer. The dynos are a disappointment though, starting at 3500rpm for the larger manifold, and 2900 for the spacer, doesn't really give you insights into low end/ cruising behavior. If they were going to help low end I would think they would try to showcase that
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What about the spacer dyno looked more promising than the manifold? The only thing I can really tell is that you can assume that the torque curve is being shifted towards lower RPMs and can see it drop off at the top end (where my engine might be 6x a year). That said, you are correct. The spacer has mad phenomenal changes in my mileage.
I have not found a dyno for my car, involving performance part upgrades, that start in the 2K range. I don't know if they just don't care or if it is a limitation of their testing method.