Can clean the previous page too, here is a redirect to sekred's tree hugger comment for on that topic discussion (can't edit my reply): https://www.gr-zoo.com/threads/opinion-original-exhaust-and-opf.169/post-133185
Thanks!
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GR Yaris Hello there
- Thread starter Michael Knight
- Start date
Thanks!
Have been cleaning up the premises (garage) and now it starts to look like a decent place to do stuff.
Built jig for Audi A2 catalysator project yesterday.
Have been dialing up setup with GR and now it starts to be on region - fun to see how she goes on track! hopefully will get testing time soon.
Ordered a set of RP-1 pads as fronts looked wornish - they could last 1-2 sets but 3 is tough ask so good to have one set as reserve. it will be less aggressive than RP-x but I feel should still to the trick + less hard for the brake discs.
Should install the towing mounts front and rear, and spesific tricks to use to remove the tow hook plastics tidy?
I will not drill any holes, just remove the covers and put them back on if needed.
Built jig for Audi A2 catalysator project yesterday.
Have been dialing up setup with GR and now it starts to be on region - fun to see how she goes on track! hopefully will get testing time soon.
Ordered a set of RP-1 pads as fronts looked wornish - they could last 1-2 sets but 3 is tough ask so good to have one set as reserve. it will be less aggressive than RP-x but I feel should still to the trick + less hard for the brake discs.
Should install the towing mounts front and rear, and spesific tricks to use to remove the tow hook plastics tidy?
I will not drill any holes, just remove the covers and put them back on if needed.
Few practice runs at track yesterday. It was snowing so temps were not that great but considering weather and first session for the year got to 0.7s away from last years PB so ok session in that regard.
Had issues with powersteering even with regular battery, so my hypotesis that Lifepo couldn't deliver enough power was wrong - same issue with stock battery.
heavy steering was easily identifiable in trail in braking, but also in pit after session (fast turn steering wheel stationary). either power delivery to power steering is not sufficient, or then steering assistance motor is not performing as it should. Annoying bug!
Had issues with powersteering even with regular battery, so my hypotesis that Lifepo couldn't deliver enough power was wrong - same issue with stock battery.
heavy steering was easily identifiable in trail in braking, but also in pit after session (fast turn steering wheel stationary). either power delivery to power steering is not sufficient, or then steering assistance motor is not performing as it should. Annoying bug!
I've experienced sudden heavy steering feel on the track, usually when the car is near - or starts entering - a slide at speed. It's an intrusive, unusually heavy steering feel.
I had traction control turned on (standard setting) when I felt it , I did wonder if it was just some intrusive safety setting. I've not come across it when I've had traction control on expert setting, however that was at slower tracks where I never really got into high speed slides.
Steering is not related to traction control. It occurs usually during simultaneous weight transition to front and turning, usually in trail braking.
tonic
Totally Hooked
- Aug 31, 2023
- 180
- 567
- 93
If you could hook up TechStream, there are actually a few interesting EPS parameters you can log. Or I could figure out the OBDII PIDs and you could log them with a Torque app.
Figuring out exactly why it's happening, whether it's a voltage drop, the system limiting the current, or it's just getting too hot, will give a better idea of what's going on and if there's a potential workaround.
If you do end up grabbing some data, the helpful things to look at would be:
Battery Voltage: to see if it's dropping off significantly under load.
Command Value Current (Q Axis): how much steering assist the EPS wants to provide.
Final Motor Current Limited (Q Axis): the actual assist you're getting after the system's internal limits and logic kick in.
Thermistor Temperature: to check if the system isn't overheating.
Even if you pull only historic and not live data, there are some values showing what was happening.
Realistically, this might not be something you can 100% fix on the current setup, especially since Toyota specifically upgraded the EPS for the Type 26 models. But it would still be really interesting to see exactly what the bottleneck is.
Figuring out exactly why it's happening, whether it's a voltage drop, the system limiting the current, or it's just getting too hot, will give a better idea of what's going on and if there's a potential workaround.
If you do end up grabbing some data, the helpful things to look at would be:
Battery Voltage: to see if it's dropping off significantly under load.
Command Value Current (Q Axis): how much steering assist the EPS wants to provide.
Final Motor Current Limited (Q Axis): the actual assist you're getting after the system's internal limits and logic kick in.
Thermistor Temperature: to check if the system isn't overheating.
Even if you pull only historic and not live data, there are some values showing what was happening.
Realistically, this might not be something you can 100% fix on the current setup, especially since Toyota specifically upgraded the EPS for the Type 26 models. But it would still be really interesting to see exactly what the bottleneck is.
Attachments
Cheers I actually have techstream - should just learn how to use it. But this was good intel to analyse the issue.
Swapped rear diff oils. Span the fill plug and was almost desperate but luckily it eventually opened.
Oils looked okeyish. Maybe 12tkm driven. Need to do the same for kulmavaihde later this wk.
Oils looked okeyish. Maybe 12tkm driven. Need to do the same for kulmavaihde later this wk.
well. last track session where did rather many hot laps got temps to 100-105'C. last summer in hot weather oil went to 110-115'C. so very well.
Water temps stay usually btw 82-90'C even during push mode.
btw for the tow hook hole did not use saw but 52mm stainless pipe that was heated. dug through plastic quite nicely.
Am i getting weak, old, or both, but filling that box juice with manual syringe is effin crazy push!! Started thinking that maybe next time is worth paying for the service vs getting an ruptured aneurysm..
Oil smelled very very bad.
Euge
Totally Hooked
How often you changing transfer box oil?
I will say it again, I am so jealous of your home set up. I need a decent garage and a lift like that.
well have tried to do every 10tkm although cannot recall when I did it last time - maybe at 50tkm? Now ticking at 62tkm.
front transfer box oil looked worse than rear that was actually okeyish. Wouldn't be a bad idea to add passive cooler there. All rally cars have separate cooler for transfer box but that's some work if done properly.
thanks yeah its quite nice equip to have, haven't felt bad for the lift investment, at least saves lots of time from starting any work. + Nice to help any projects that friends have, if they need occasional place.
Still not fully comfortable working with GR, often there is surprises, maybe should read more instructions..
But regular brake works + oil changes etc is quite easy to do.
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Fun practice day at track, improved pb by 0.8s from last year. It will be though to reach same time tomorrow but hope that it will happen 
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Car and tyres work all ok so its all up to driver to perform decent job!
.Car and tyres work all ok so its all up to driver to perform decent job!
