[Alan Roehrich]

We locate ours right after or right before the minor diameter in the merge, preferably before, so it is as far from the end of the collector as possible. If not using a merge, 4-6" from the ends of the primaries. Also, between 10 and 2 o'clock, if possible, so as to prevent moisture from condensing in the sensor when it is off. The sensors aren't real happy lighting off with water in them. You may see some fluctuation at idle, or rolling along in the pits or staging lanes, due to fresh air being drawn back into the collector at low RPM, but when it really matters, going down the track, it will be fine.