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SVTPerformance's Chain of Restaurants
Tuning À la carte
innovate wide band voltage formula sct using firewire # 9608
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<blockquote data-quote="04sleeper" data-source="post: 16865062" data-attributes="member: 34911"><p><strong>Tips and tricks</strong></p><p>While some of this may sound a bit intimidating, it will become quite easy after you’ve done it a few times. There are a few things I want to mention again, to emphasize their significance. First off is correct wiring. Do it right the first time, and your life will be much easier. Keeping the analog and system grounds together with the Xcal’s Analog ground wire is important. And putting these three wires straight to the engine block as a ground is the best solution.</p><p>Second, testing for ground offsets is of major importance. If you skip this part, and end up with your engine air/fuel ratio being .2 or .3 off, it could be the difference between life and death on a nitrous or forced induction car. The bulk of these ground offsets will be cured simply by wiring the LC-1 correctly. What’s left of the offsets should be compensated for with the correction formula.</p><p>Third, understanding how the formula works will not only ensure that you are getting the right readings, but it will help you to better understand how the whole thing works. Take the time to read that section and work with the formulas until you fully understand it. You’ll be glad you did.</p><p>And last, I want to mention that I had to modify the 9 pin mini-din cable, where it plugged in to the Xcal 2. The rubber sheathing over the cable end would come into contact with the body of the Xcal 2 before the plug itself was fully inserted. This would cause the data link to come undone occasionally. The fix was to take a razor blade and carefully trim off about ¼” of sheathing. Different brands of cables will have different needs in this area. The cable mentioned above was not an SCT brand cable.</p><p>If you don’t like the looks of having a cable that is permanently attached to the LC-1, you can purchase a 9 pin female mini-din socket, wire it permanently to the LC-1, and install it in the car. Then, you don’t have to cut one end off of the SCT cable. You can simply plug the cable into the socket. This makes for a nice plug-and-play installation. The wires going from the back of the socket to the LC-1 should be made out of shielded cable like the 9 pin mini-din cable is. If shielded cable is not used, RF interference could skew the AFR readings.</p></blockquote><p></p>
[QUOTE="04sleeper, post: 16865062, member: 34911"] [B]Tips and tricks[/B] While some of this may sound a bit intimidating, it will become quite easy after you’ve done it a few times. There are a few things I want to mention again, to emphasize their significance. First off is correct wiring. Do it right the first time, and your life will be much easier. Keeping the analog and system grounds together with the Xcal’s Analog ground wire is important. And putting these three wires straight to the engine block as a ground is the best solution. Second, testing for ground offsets is of major importance. If you skip this part, and end up with your engine air/fuel ratio being .2 or .3 off, it could be the difference between life and death on a nitrous or forced induction car. The bulk of these ground offsets will be cured simply by wiring the LC-1 correctly. What’s left of the offsets should be compensated for with the correction formula. Third, understanding how the formula works will not only ensure that you are getting the right readings, but it will help you to better understand how the whole thing works. Take the time to read that section and work with the formulas until you fully understand it. You’ll be glad you did. And last, I want to mention that I had to modify the 9 pin mini-din cable, where it plugged in to the Xcal 2. The rubber sheathing over the cable end would come into contact with the body of the Xcal 2 before the plug itself was fully inserted. This would cause the data link to come undone occasionally. The fix was to take a razor blade and carefully trim off about ¼” of sheathing. Different brands of cables will have different needs in this area. The cable mentioned above was not an SCT brand cable. If you don’t like the looks of having a cable that is permanently attached to the LC-1, you can purchase a 9 pin female mini-din socket, wire it permanently to the LC-1, and install it in the car. Then, you don’t have to cut one end off of the SCT cable. You can simply plug the cable into the socket. This makes for a nice plug-and-play installation. The wires going from the back of the socket to the LC-1 should be made out of shielded cable like the 9 pin mini-din cable is. If shielded cable is not used, RF interference could skew the AFR readings. [/QUOTE]
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innovate wide band voltage formula sct using firewire # 9608
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