RomRaider

I dont know if this is a common issue or if it is something Im doing but when NLTS and LC are on at the same time it is impossible to launch. As soon as I start letting the clutch out NLTS drops the rpms and the car bogs bad or even stalls... I have them wired up to different switches and NLTS is wired to the defogger. Would it be possible to have an "enable after speed" for NLTS to prevent this from happening?

Does the NLTS work correctly otherwise? The way its set up it shouldn't activate at the launch but I agree that having a above-speed threshold would be beneficial. Ill whip up a test rom and PM it to you soon.


Jason

I'll second that.

Ryan had a sizable erection just from the idea of NLTS for quite some time, while I was skeptical that it would be smooth and relatively easy on the drivetrain.

After he got it set up and working, I went for a ride in his car, and I was blown away. It really is quite impressive how seamless it is!!

Well I have now got water meth injection working with map switching and its great.
Back to an issue I had a while back with NLTS.
I used the info from my stock ecu for gear detection and it does not work (it did work runing stock rom) So I found somewhere on this site a calulaction something like mph*60/RPM. I got these, averaged the values, still no go however i must be close as when i changed gear while shifting through nuteral it picked up the correct gear. I have a 01 JDM STI with the stock 6MT. I have tried the netural position switch on both settings. Any help would be great.

Matt

Check that your neutral position sensor setting is correct.
If it will pick up the reading in neutral but not in gear I would suspect that is incorrect.

-Mark

as stated both settings have been tried

got NLTS up and running. had the clutch switch already wired into the utec which did lc/ffs for the last 8 years, so i just snipped stripped and crimped.

used the TID wire, e1, black/red. other end of the switch was ground so i used the inverted switch mode.

at first it was sorta working, but when i looked at gear selection in RR logger it was all wrong.

took a log this morning with the vehicle speed ratio calculation field running, then averaged a bunch of values.

came up with:

2 = 6500
3 = 4300
4 = 3180
5 = 2340

usdm 5mt gga platform (2003 bugeye wagon).

took another spin and it works a TREAT!

i do plan to make the throttle threshold for NLTS rather high, so as to avoid throttle blipping issues. going to start with 90.

feels like i gotta put a smidgen of positive offset. going to start with 50 there and see how that goes.

anyway, big thumbs up!!!

Would really like to know step-by-step how to set up correct values for NLTS and gear det. tresholds......we seem to miss something out to get it work.
EDM -05 STI 6-speed.

can you log the "vehicle speed ratio calculation" field?

Yes.

have you averaged those values for each of the gears?

one way to make it easy is to get in a gear, start the log, stay in that gear, and just run the rpms up and down before stopping the log.

i found the values more stable in the higher gears, fwiw.

Ok,this might be the point....you have to average the values?

DOnt know if its the language or what but havent figured out the correct method to set values for NLTS and gear det. tresholds...

First you want to get the gear determination threshold data from the original ROM that was on the car that your transmission came from. Put this data into the gear determination thresholds. Next, drive around and log "Current Gear" and make sure it is showing the correct gear for whatever gear you are in. If it shows "6" when you are in lower gears then change the NPS invert setting in the ROM (then flash and log current gear again to make sure its reading the gears correctly).

Now drive around and log the Vehicle Speed Ratio Units in each gear, the data will jump around a bit so you want to take an average of this data for each gear. Put these averaged values for each gear into the NLTS gear ratio table.


Then set up the clutch switch input, set the NLTS offset to 75rpm or so, and set the TPS threshold to 70% or higher. Also, don't forget to enable the NLTS.



Jason

So the gear determination values in the NTLS table will be different from those in the stock gear determination threshold table?

Yes, the gear determination thresholds should be pulled out of a stock ROM (unless you have custom gears); these values will usually be 20%-25% larger than the NLTS table values. If you cannot find the gear determination thresholds for your transmission, you can just add 20%-25% to what you log with the vehicle speed ratio units and it should work okay, just make sure the current gear is being calculated correctly when driving around.

The NLTS values represent the exact ratio in order to rev-match the RPMs to the next gear, the gear determination threshold values are the maximums for each gear to allow calculation of the current gear. Having the gear determination values higher than the exact ratios allows for some variance due to noise or slightly larger/smaller tires.


I thought I had the default units updated in v3.6.5 for what they should be for a usdm 5speed wrx. I think they got messed up though, ill have to fix them in the next release.