lukEp Posted October 15, 2011 Share Posted October 15, 2011 I have recently discovered that upon doing my auto to manual convertion two years ago. Ever since until now I've been driving with resticted power (limited to 160bhp)My discovery came when I did a ecu error blink test and I got a TPS signal code. So I stated researching into what signals the TPS should have. on the plug the pins are marked 1-4 on Auto1 = Ground (0v)2 = IDL (0v when TB closed)3 = VTA (potentiometer)4 = VCC (+5v)on the plug the pins are marked 1-3 on manual (no +5v)1 = IDL (0v when TB closed)2 = Ground (0v)3 = PSW (0v when TB open)on map sensor plug pins are marked 1-31 = Ground (0v)2 = PIM (potentiometer)3 = VCC (+5v)Well when you change the auto ecu to manual ecu ( I did because there were alsorts of lights flashing on my dash) you loose the 5v feed to the auto 4 wire TPS. So I tapped into the vcc (5v) input to the map sensor and spliced it into where the auto TPS should have 5v. The response difference was amazing from the engine it pulled for longer and no longer felt like the timing was wrong. Which also means that you can also now put a auto 4 wire TPS on a manual by adding the 5v feed off the map sensor. As craig n also has an auto to manual convertion with manual ecu I did this mod to his and he got the same results Quote Link to post Share on other sites
Amjad Posted October 15, 2011 Share Posted October 15, 2011 Are you gonna get the increase measured on a dyno? Would be interesting to see. Also nice find! Quote Link to post Share on other sites
lukEp Posted October 15, 2011 Author Share Posted October 15, 2011 Yeh next year on mm rr meet lolI know that's what my problem was because the two times I've had it on the rollers ....First 158.9 bhpSecond 163bhpBoth times compleatly different mods for the past two years I've alway thought something was backing my timing off and it must have been the ecu because it didn't know what the TPS was doing Quote Link to post Share on other sites
Amjad Posted October 15, 2011 Share Posted October 15, 2011 Yeah it's weird because you were running a bar right? Quote Link to post Share on other sites
lukEp Posted October 15, 2011 Author Share Posted October 15, 2011 1.2 on second rr meet Quote Link to post Share on other sites
Craig_N Posted October 15, 2011 Share Posted October 15, 2011 This was crazy the difference it made Quote Link to post Share on other sites
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