![]() ![]() I had to get my daughter to keep her foot on the gas peddle to keep the engine running. The SE-R said the engine would probably die if the throttle body connector was removed which mine did. The procedures are 180 degrees out on which way to twist the distributor to advance the timing. I just tried the ignition timing procedure posted on this board and the procedure posted on the board. When you bump up the timing a bit, the idle quality may degrade slightly, but it's not annoying at all in my case, and the power gain is 100% worth the trouble. ![]() This makes the entire timing map more agressive by 4°, which releases more power from the fuel. When you bump the timing, the ECU assumes that the mechanical advance (distributor's physical orientation) is still set at 15°, even though it's actually 19°. The ECU then adds and removes timing respectively, according to RPM, throttle position, and knock sensor feedback. The timing is set at this number to allow you to run 87 octane fuel, and to keep the idle smooth. If it does knock, you either need more octane or less timing.Īs Justin said, factory timing is 15°, ☒°. If it doesn't knock, you don't need more octane. Actually, '00-02 (roller) G20s can most likely get away with 89 as well, since that's what I run in my '01 Sentra these days. The higher your altitude, the lower the octane requirements. You can get away with lower-octane fuels than these if you live in high altitudes, but unless you have a dyno and are able to tune it on the spot, do not exceed 19* of advance.Īctually, Gorilla, you can use 89. Use 89 octane or better fuel.ġ9 degrees is where SR20DEs with stock internals and computers generally make their best power. Use 87 octane or better fuel.ġ7 degrees is recommended for a little power. If you drew an imaginary line along the red stripe on my light, it points directly at the marks on the pulley and the indicator.įirst, verify that your ignition timing is adjusted properly, then aim for your performance and fuel consumption goal:ġ5 degrees of advance is stock. You can't see very clearly in my picture where the pulley is, but you should trust me, it's down there. Place the timing light between the coolant overflow tank and the cylinder head, and check the base timing as it's adjusted on your car. You should stand on the passenger side of the car, with your feet almost directly out from the axle. ![]()
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