![]() In addition, Jackson is planning to offer an optional controller that will allow the driver to change ignition timing. Oscar Jackson says that the new-for-1999 Miata has an engine-management system that he is still tinkering with, and recently he finished new electronics that fixed the problem. They quickly diagnosed the problem as a bad pressure sensor and immediately sent a new one, which greatly helped the problem but did not totally eradicate the lag, especially when whacking the throttle open from near idle. I rechecked my work and then rang Jackson's shop. On full throttle, the engine lagged at first and then pulled like mad. Those were the only extra parts I had to purchase.Īfter making sure all systems were functioning properly, there was only one thing left to do: Open 'er up. I fixed that by buying some new hose and a small plastic connector elbow to position the hose clear of the belt. But then that repositioned heater hose rubbed against the belt and soon sprang a leak. ![]() A loud sucking noise instigated an immediate search for a vacuum leak, but the noise turned out to be simple intake roar emitting from the new foam airbox. The only hitch in the entire assembly was the rerouting of a heater hose, which has to snake around the serpentine belt that powers the blower.Īfter about six hours of entertaining and mildly challenging wrenching, a remarkable and wonderful thing happened: The engine fired on the first try. Thankfully, the directions were easy to follow and detailed exactly where each colored wire could be found. Numerous splices need to be made into the Miata's main wiring harness, a painstaking procedure that required me to search through a bundle of wires thicker than my thumb for the few hair-thin wires that needed to be spliced. A small pressure sensor mounts to the dummy throttle body, and the signal it sends to the black box tells that box when to order more fuel. To add the fuel, the kit comes with a small black box - we're not kidding here - that directs the fuel injectors to supply more fuel. The supercharger adds air to the engine, and with that increased air, the engine also needs more fuel. Impatient types need not apply.Īs I removed and installed the various mechanical components, the instructions directed me to a series of wiring diagrams. I had to carefully squeeze the elbow in between the hard metal brake lines without damaging them. Small fingers that don't behave like stiff sausages are a huge plus here.Īlso, the elbow that joins the airflow meter to the stock throttle body resides right in the middle of the hydraulic lines that run from the brake proportioning valve. Unbolting parts and reattaching new ones sounds easy enough, but mounting the supercharger involved adding a series of pillow blocks and plates to the existing steering-pump brackets.
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