iruvyouskyrine Posted October 31, 2018 Report Share Posted October 31, 2018 EFR6758 and using a G4+ Extreme ECU wanting turbo speed fed into it. I Will be pushing close to the turbine RPM limit and would like the ECU to offer some protection. Quote Link to comment Share on other sites More sharing options...
iruvyouskyrine Posted November 26, 2018 Report Share Posted November 26, 2018 @Richard Hill Any more info you care to share? About to start making my engine loom and if i can get it to work i will make it with engine speed, Thanks! Quote Link to comment Share on other sites More sharing options...
Richard Hill Posted November 26, 2018 Report Share Posted November 26, 2018 What sort of info do you need? The schematic I posted on page 1 should work for a 10:1 divider. Quote Link to comment Share on other sites More sharing options...
iruvyouskyrine Posted November 26, 2018 Report Share Posted November 26, 2018 I have a limited understanding in IC's and am not really sure what to make of the diagrams on the first page. I understand that this IC is used to reduce the frequency to something under the 500hz limit that the non-thunder ECU's can handle however the wiring side is what i need help with. I understand that pin Q5 is the ÷10 output that gets fed into the ECU's DI input. +5VDC from ECU sensor power supply goes to which pin on the IC? Turbo speed sensor original output goes to what pin on the IC? Does the IC need power earth or sensor earth fed into it and on what pin? Thanks for you help mate, much appreciated. Quote Link to comment Share on other sites More sharing options...
CamB Posted November 28, 2018 Report Share Posted November 28, 2018 (edited) > I understand that pin Q5 is the ÷10 output that gets fed into the ECU's DI input. Correct but also tied to Pin 1 - data > +5VDC from ECU sensor power supply goes to which pin on the IC? VDD - pin 16 > Turbo speed sensor original output goes to what pin on the IC? D = Data - pin 1 Clock - pin 14 > Does the IC need power earth or sensor earth fed into it and on what pin? I'd ground to chassis, all the ones shown (Jam 1-5 and R for reset) and VSS (edited as wrong...) Edited September 13, 2019 by CamB Wrong info! Quote Link to comment Share on other sites More sharing options...
iruvyouskyrine Posted November 28, 2018 Report Share Posted November 28, 2018 Awesome mate thanks for the info. I am running the 6758 which is the only 12 blade turbo in the EFR range so i could also use the divide by 8 function to get a better resolution. 150,000 (max RPM) * 12 = 1,800,000 1,800,000 / 60 = 30,000 Hz 30,000 / 8 = 3,750 Hz 3,750 / 8 = 468.75 Hz Which is under the 'roundabout' limit of 500hz that the fury/extreme can handle. Quote Link to comment Share on other sites More sharing options...
Badnews Posted November 29, 2018 Report Share Posted November 29, 2018 5 hours ago, iruvyouskyrine said: 150,000 (max RPM) * 12 = 1,800,000 1,800,000 / 60 = 30,000 Hz 30,000 / 8 = 3,750 Hz 3,750 / 8 = 468.75 Hz Why are you dividing by 8 twice? Quote Link to comment Share on other sites More sharing options...
Adamw Posted November 29, 2018 Report Share Posted November 29, 2018 49 minutes ago, Badnews said: Why are you dividing by 8 twice? The EFR sensor has a divide by 8 circuit already built in. Quote Link to comment Share on other sites More sharing options...
Leonv33 Posted September 12, 2019 Report Share Posted September 12, 2019 On 11/29/2018 at 6:55 AM, CamB said: > I understand that pin Q5 is the ÷10 output that gets fed into the ECU's DI input. Correct > +5VDC from ECU sensor power supply goes to which pin on the IC? VDD - pin 16 > Turbo speed sensor original output goes to what pin on the IC? D = Data - pin 1 > Does the IC need power earth or sensor earth fed into it and on what pin? I'd ground to chassis, all the ones shown (Jam 1-5 and R for reset) and VSS I know its an old thread but I am just in the process of fitting an EFR speed sensor and was reading Richards original post regarding the 4018IC. In Richard's explanation he has the Clock (pin 14 of the IC) as the input and not D (pin 1) as suggested here. Just making one up and any help for an electronic newbie much appreciated. Quote Link to comment Share on other sites More sharing options...
CamB Posted September 13, 2019 Report Share Posted September 13, 2019 @Leonv33 - sorry, you are quite right. Frequency in to Clock and then the Data and Q5 should be tied together. Will edit my earlier post. Quote Link to comment Share on other sites More sharing options...
Leonv33 Posted September 13, 2019 Report Share Posted September 13, 2019 Thanks CamB Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 13, 2019 Report Share Posted September 13, 2019 Also, another variation here: Quote Link to comment Share on other sites More sharing options...
cj.surr Posted September 17, 2019 Report Share Posted September 17, 2019 I have used the IC and circuit that Richard posted with good luck. Thanks Richard. I did seem to have some intermittent operation before tying the J1-5 pins to ground (left open initially). I'm not sure if that's necessarily what fixed it though. Quote Link to comment Share on other sites More sharing options...
Grant Baker Posted December 13, 2019 Report Share Posted December 13, 2019 Is there a workaround on a Thunder with a new Garrett G series Speed sensor to show the speed accurately? Ignoring additional external hardware I mean... Quote Link to comment Share on other sites More sharing options...
gc8andy Posted December 22, 2019 Report Share Posted December 22, 2019 I have also just used the circuit posted by Richard and it works perfect. thanks to CamB for the more in depth explanation. Quote Link to comment Share on other sites More sharing options...
Badnews Posted December 8, 2021 Report Share Posted December 8, 2021 Quick question. I have a Thunder and am using DI15 for turbo speed and my 1st log it didn't work. Just want to make sure I have it wired correctly. So I'm using +5V DI15+ DI15- Are those the 3 I should be using or instead of DI15- should it be sensor ground? Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 8, 2021 Report Share Posted December 8, 2021 The turbo sensor ground should connect to ecu sensor ground, not DI15-. DI15- will be left unconnected. Quote Link to comment Share on other sites More sharing options...
bsh Posted February 18, 2023 Report Share Posted February 18, 2023 Hi, is it possible to get the a Calibration for turbo speed higher than 10000? An EFR with 14 blade and EFR speed sensor with a 8 divider built in, will only output about 3800hz@130000 rpm, but not possible to get correct because Calibration should be 10500, and software limiting to 10000... Is this correct, or am I missing something? Thanks Quote Link to comment Share on other sites More sharing options...
Yvo Posted February 26, 2023 Report Share Posted February 26, 2023 I got the same probleme, interesting if or how it can be solved. Quote Link to comment Share on other sites More sharing options...
koracing Posted March 29, 2023 Report Share Posted March 29, 2023 Maybe it would be possible to leave off the last zero and know that there is an order of magnitude difference in the reported speed (i.e. the result is 10x) - I'm not sure how the calibration number is used per se but some version of this makes sense to me. I have one customer that reads in the turbo speed frequency as transmission input shaft speed and displays it that way on his Thunder. Quote Link to comment Share on other sites More sharing options...
Yvo Posted April 1, 2023 Report Share Posted April 1, 2023 ok, and for the second turbo? Quote Link to comment Share on other sites More sharing options...
koracing Posted April 3, 2023 Report Share Posted April 3, 2023 Maybe it would be possible to leave off the last zero and know that there is an order of magnitude difference in the reported speed (i.e. the result is 10x)? Quote Link to comment Share on other sites More sharing options...
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