Without a doubt, modern fuel systems work remarkably well.

But, when the aftermarket tuners get onto the job, all aspects of the system come under scrutiny. One by one the weak links show up and get dealt with for the higher performance expectations. This is the continuous effort and challenge the tuner both faces and thoroughly enjoys.

One of the perceived problems is, of course, the ability of each injector to deliver the same amount of fuel at any given pulse duration. This leads to two questions; is the fuel pressure the same at each injector, and, when fuel is flowing, does each injector have equal access to the stores of fuel?

The hardware answering our best effort to insure those problems are a has been led us to the two distinct design features of a multiple pulse reservoir atop each injector and an absolute symmetry of the fuel flow layout.

The highest delivery port proved consistently 1.0082 higher than the mean measured. Oddly coincidental, the lowest delivery port was .9918 of the mean. We figured this was none too shabby and cast the whole configuration in stone. The definition of "mean" clearly establishes our numbers valid and near perfect. I hope I don't have to explain that anytime soon.

So, here it is. BTP is making most of the pieces, but the only bit of science here, the reservoir, is cut out by a real machine shop that can make a million identical parts at a modest cost.

If you need a good fuel rail, or just want one, BTP has the deal. We can offer brass fittings for the cheapskates, or anodized aluminum fittings for the self-professed Picasso's. Either way, it is well crafted, very compact, does the job perfectly, and, I think it is rather cool.

The Fuel Delivery System includes the mounting rail, fuel line, fuel distribution block, fittings, and mounting hardware. For use with the 1990-1997 Miata for non E85 applications.