MichaelR32GTR Posted June 26, 2021 Report Share Posted June 26, 2021 Hey guys Just came across this looking through my ecu settings and I’m not sure if it’s correct or not I have Digital Input 3 (DI 3) - LF wheel speed but when I go into the “speed sources” table I am seeing the following: *Driven Wheel Speed Source: average rear speed *Non Driven Wheel Speed Source: average front speed should the driven wheel speed source also be LF wheel speed ? Quote Link to comment Share on other sites More sharing options...
MichaelR32GTR Posted June 26, 2021 Author Report Share Posted June 26, 2021 Also my launch control is activated using DI3 Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 26, 2021 Report Share Posted June 26, 2021 If you only have the stock speed sensor then you should set both driven and non-driven speed sources to LF. Its normallly set to LR in our GTR base map since it more closely resembles a rear wheel speed - but that doesnt really matter. Launch activation should not be set to DI3 as it is going to constantly cycle between on & off. MichaelR32GTR 1 Quote Link to comment Share on other sites More sharing options...
MichaelR32GTR Posted June 26, 2021 Author Report Share Posted June 26, 2021 yes the stock r32 Gtr wheel sensors are used Ok thanks I will make those changes to the speed sources table Are you saying launch control will be inconsistent using di3 Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 27, 2021 Report Share Posted June 27, 2021 Launch activation is meant to be a switch or virtual aux, not a speed or frequency input that turns on/off 100's of times a second. Quote Link to comment Share on other sites More sharing options...
MichaelR32GTR Posted April 21, 2022 Author Report Share Posted April 21, 2022 Bringing up an old thread I changed my speed settings as per recommended settings for an r32 gtr Driven and non driven changed to LF wheel speed also in di3 - LF wheel speed i changed my pull-up resistor from OFF to ON And active edge from rising to falling and on two occasions now with me changing these settings, I can drive around normal ok but when I give it some extra throttle and accelerate fast it literally feels like traction control is kicking in, splutters and I don’t gain much momentum so I just put it back the original way it was any idea why changing speed settings would cause this issue Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 21, 2022 Report Share Posted April 21, 2022 Will need to see a log. Look at what LF wheel speed is reporting. Most likely what ever settings you are changing causes the speed to at least intermittently drop below the launch disarming speed so the launch limiter is kicking in. R32's often have a very erratic speed reported from the speed sensor due to the reed switch in the back of the speedo getting old and sticky. Sometimes one edge works better than the other, sometimes both edges are erratic. Quote Link to comment Share on other sites More sharing options...
MichaelR32GTR Posted April 21, 2022 Author Report Share Posted April 21, 2022 YES ! it did feel exactly like the launch control was activating im going to replicate what it does and get a log and report back thanks ! Quote Link to comment Share on other sites More sharing options...
MichaelR32GTR Posted April 21, 2022 Author Report Share Posted April 21, 2022 Is there a way of getting a more reliable wheel speed on an r32 gtr gps ? tailshaft speed sensor etc ? Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 21, 2022 Report Share Posted April 21, 2022 Yeah, either of those are possibilities. First confirm if this is your problem though. I have seen a few companies selling a kit like this: https://shop.ostdyno.com/shop/shop/nissan-skyline/engine-management/r32-gtr-auxiliary-speed-sensor-kit/ Quote Link to comment Share on other sites More sharing options...
MichaelR32GTR Posted April 25, 2022 Author Report Share Posted April 25, 2022 I did go ahead and order that tailshaft speed sensor kit, will be installed when car goes up for tuning in coming weeks on a side note, I saw Haltech has a gps module https://www.haltech.com/product/ht-011310-gps-speed-input-module/ would there be any issues running that with a link fury? Any calibration issues etc ? Quote Link to comment Share on other sites More sharing options...
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