Haltech which one to use
09-15-07, 01:42 AM
#6
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C. Ludwig is right.
There is a special cam on the throttle plates shaft that contacts the full-range TPS unit.
The TB's are different in this sense.
You should've grabbed the S5 TB also.
-Ted
09-15-07, 09:24 AM
#7
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I just made a recent discovery while installing an E6K onto an FC with S4 engine regarding the TPS's.
ANY of the TPS can be used, doesnt matter which, the sensor it self, what you need is the S5 throttle body and bracket because like Ludwig and Ted said, thats the one with the special "cam" for the TPS to glide on to give you the 0-5v full range motion sensing.
But the fact is that you can literally any of the S4 or S5 sensors just needs to be placed on the S5 throttle with the S5 bracket to work.
Just thought id let everybody know. Always keep an S5 throttle and TPS brake handy.
ANY of the TPS can be used, doesnt matter which, the sensor it self, what you need is the S5 throttle body and bracket because like Ludwig and Ted said, thats the one with the special "cam" for the TPS to glide on to give you the 0-5v full range motion sensing.
But the fact is that you can literally any of the S4 or S5 sensors just needs to be placed on the S5 throttle with the S5 bracket to work.
Just thought id let everybody know. Always keep an S5 throttle and TPS brake handy.
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09-15-07, 11:57 PM
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09-16-07, 12:09 PM
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Nope, you wont be able to accelerate decently after about 20% which is very low. I tried it once, doesnt work well, after 20% TPS reads 100% so it screws the mixtures up.
09-16-07, 10:13 PM
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I think in the long run its probably easier and more practical to just use an S5 throttle, dont you think? But since i am in DR right now, shipping is going to be a tad high. Im supposed to be in the US in a week or 2, if you havent tracked down a cheap good condition S5 throttle by then ill ship it to you. Otherwise, just contact Speed Machine, they have that in stock right now.
09-17-07, 04:33 PM
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i will be making a bracket like this for my haltech TPS
heres a copy of notes in hitmans thread about doing it.
Throttle Position Sensor : (Or TPS)
This is a tricky one , as you will no doubt have to make a bracket to hold the TPS body still. The throttle shaft may also have to be modified to properly interface with the sensor. The inner section of the TPS should rotate with the throttle shaft , and this should happen the instant the throttle shaft is rotated. There should be absolutely no play in the shaft to sensor movement. If there is you will never eliminate slight stumbles when you drive and first touch the throttle. Any movement with the throttle should coincide with movement of the sensor. Do now worry about zero-ing the sensor yet , as this is done in the programming software. But be sure that the sensor does not inhibit the throttle shaft movement or it may jam the throttle open. Also be sure to mount it to the primary throttle and not a secondary throttle. See the picture below of the TPS on a 13B Turbo. Most OEM Throttle Position Sensors can be used with the Haltech if they are of the variable resistor type and not just a switch.
i wanted to keep my OMP and stuff but im assuming it cant be done. i been pondering if i can......
heres a copy of notes in hitmans thread about doing it.
Throttle Position Sensor : (Or TPS)
This is a tricky one , as you will no doubt have to make a bracket to hold the TPS body still. The throttle shaft may also have to be modified to properly interface with the sensor. The inner section of the TPS should rotate with the throttle shaft , and this should happen the instant the throttle shaft is rotated. There should be absolutely no play in the shaft to sensor movement. If there is you will never eliminate slight stumbles when you drive and first touch the throttle. Any movement with the throttle should coincide with movement of the sensor. Do now worry about zero-ing the sensor yet , as this is done in the programming software. But be sure that the sensor does not inhibit the throttle shaft movement or it may jam the throttle open. Also be sure to mount it to the primary throttle and not a secondary throttle. See the picture below of the TPS on a 13B Turbo. Most OEM Throttle Position Sensors can be used with the Haltech if they are of the variable resistor type and not just a switch.
i wanted to keep my OMP and stuff but im assuming it cant be done. i been pondering if i can......
09-17-07, 08:05 PM
#16
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So far, the only solution to keep the stock OMP on any RX-7, is to use the E8/E11 with either S5 or S6 and control the electronic one, the S4 shaft operated one is not possible. I believe either pineapple racing or is it tripoint (or racing beat) sell a mechanical OMP replacement that works progresively with RPMs, and no need for shafts. Can somebody confirm this info?
