MBS206

RBF660 doesn't meet DOT5.1 as it is too thick. DOT5.1 has a very low viscosity requirement compared to DOT3 or 4. (Dot5.1 must be half as "thick" as DOT4) It would also be a big indicator for anyone using that fluid in extremely cold weather to possibly look to swap for something in the DOT5.1 range.

Or it's a photo from his last track day 😛

Races cars don't care for VIN either...

Ha ha ha, mine loves to spend, all on the dogs (they're our kids, and her spending would likely rival that of some people raising children!) the only benefit is, her spending is tax deductible as she runs a business in the dog industry 😛 The above all means she can spend race car budget quicker than I can. 😛 That and a lot of the things I want are very expensive, and I can be a bit "you want how much for that?!" And at other times overly impulsive. Or I start the w days of research, get to day 1.5 and get really annoyed that no one will advertise actual specifics and it's just marketting BS and I go "well, now I don't want anything to do with that now!" Also I hate paying lots of money for something I can make from $50 in materials. Then I get the shits halfway through making things and wonder why others who just buy parts have more fun... 😛

I totally couldn't do the whole kids taking up my life thing! 😮 I find it bad enough doing 45 hours in 4 days, and then fitting normal adulting life into the other 3 with no kids! As for my mates race cars, they're AMG C63 setup for production racing. The original is what has just been stripped and a brand new shell built. The original is then going away to have some panels straightened, then it will be put back together again. Then there's a third that will shortly head off to have a roll cage put in, then build it up too. And potentially a fourth to be built too... Oh, and he has two Renault Clio D class production cars, ha ha. And when he's not racing them in the Australians and QLD production championships, he's been racing one of Chaz Mostert's Lamborghini's in GT4. They just won GT4 at the 12 hour in the Lambo. We're pushing to finish the new AMG as it has its first round (and potentially its first shakedown/outing) in under w weeks for Round one of QPC, and that round is really the shakedown to make sure it's all good for the Bathurst 6 hour, which I'll be at too. Ha ha ha Working on my project is different to his, I slowly tinker and work ways to make things happen on a shoe string budget. Hes in a good position that he has a massive workshop full of parts and tools, ha ha. He also looks after me. When his air compressor died, he just needed it working, so bought himself a new one and gave the old to me. Sand blaster unit too, and a 20t pressing. And pretty much all the shelving in my shed too as he upgraded all of his (the stuff he gave me is the expensive black Bunnings heavy duty stuff)! I enjoy working on his stuff. No decision paralysis, and anything that's needed parts wise is just there. Plus, then I get to be hands on at the track in real racing, not just club day stuff.

Ha ha ha! I know those feels mate I've finally got the garage cleared enough that next weekend I'll do some actual work on my car (hopefully). Unfortunately garage isn't usable after 10am at the moment That said, I've done a lot of work this weekend on helping finalise a friend's Production Race car. Full started Christmas Eve. We're down to about 8 tasks on the list, including "get a wheel alignment". Sometimes it's just easier working on someone else's car or project than our own stuff 😛

How's your first born doing? 😛 As for now what? Time to forget about it for 12 to 18 months while your go down a totally unrelated rabbit hole... 😛

Fuse taps are perfectly fine to use, especially when you're adding stuff for your own car, and so long as you're being smart about it. IE, don't throw a 30amp circuit, onto a circuit that is only a small circuit. It's best to add a small circuit, to one that is already quite large. Oh, and make sure you're not going to blow the fuses that are further upstream too! I dislike their use in other applications, such as alarms, telematics/tracking devices etc, as it's far too easy for someone to unplug them and render a system useless. Those sorts of devices I go for wiring in quite secretively.

Went looking at mine, reading off the tyre, presumably these are 1st week of 2003. Still hold air (I haven't had to pump them up in over 12 months!) I couldn't quickly find the date on the front tyres, they were fitted around 2008 to the rims, so probably not quite as old, but they have a lot more dry rot cracks in them. Still hold air.

I am now intrigued to go check the dates on the tyres on my Skyline... We need a game of who has the oldest tyre still holding a car up, and successfully holding air (for longer than a 2 weeks I feel is successful air holding). I feel your tyres may be beating mine

I think it's bound to happen, you finally get it all perfect, and bam, something will happen. I took a while to get a Commodore rear quarter repaired where a P Plater clipped it. Two days after getting it back, Sarah wiped it out on a concrete pillar in an underground car park... This is why I take forever to repair them, it stretches how long until it gets bent again... 😛

And this, is just ONE major issue for closed loop control, particularly using PID. One such issue that is created right here, is integrator wind up. But you know GTSBoy, "it's just a simple PID controller"...

First up, I wouldn't use PID straight up for boost control. There's also other control techniques that can be implemented. And as I said, and you keep missing the point. It's not the ONE thing, it's the wrapping it up together with everything else in the one system that starts to unravel the problem. It's why there are people who can work in a certain field as a generalist, IE a IT person, and then there are specialists. IE, an SQL database specialist. Sure the IT person can build and run a database, and it'll work, however theyll likely never be as good as a specialist. So, as said, it's not as simple as you're thinking. And yes, there's a limit to the number of everything's in MCUs, and they run out far to freaking fast when you're designing a complex system, which means you have to make compromises. Add to that, you'll have a limited team working on it, so fixing / tweaking some features means some features are a higher priority than others. Add to that, someone might fix a problem around a certain unrelated feature, and that change due to other complexities in the system design, can now cause a new, unforseen bug in something else. The whole thing is, as said, sometimes split systems can work as good, and if not better. Plus when there's no need to spend $4k on an all in one solution, to meet the needs of a $200 system, maybe don't just spout off things others have said / you've read. There's a lot of misinformation on the internet, including in translated service manuals, and data sheets. Going and doing, so that you know, is better than stating something you read. Stating something that has been read, is about as useful as an engineering graduate, as all they know is what they've read. And trust me, nearly every engineering graduate is useless in the real world. And add to that, if you don't know this stuff, and just have an opinion, maybe accept what people with experience are telling you as information, and don't keep reciting the exact same thing over and over in response.

As I said, there's trade offs to jamming EVERYTHING in. Timing, resources etc, being the huge ones. Calling out the factory ECU has nothing to do with it, as it doesn't do any form of fancy boost control. It's all open loop boost control. You mention the Haltech Nexus, that's effectively two separate devices jammed into one box. What you quote about it, is proof for that. So now you've lost flexibility as a product too... A product designed to do one thing really well, will always beat other products doing multiple things. Also, I wouldn't knock COTS stuff, you'd be surprised how many things are using it, that you're probably totally in love with As for the SpaceX comment that we're working directly with them, it's about the type of stuff we're doing. We're doing design work, and breaking world firsts. If you can't understand that I have real world hands on experience, including in very modern tech, and actually understand this stuff, then to avoid useless debates where you just won't accept fact and experience, from here on, it seems you'd be be happy I (and possibly anyone with knowledge really) not reply to your questions, or input, no matter how much help you could be given to help you, or let you learn. It seems you're happy reading your data sheets, factory service manuals, and only want people to reinforce your thoughts and points of view.

Holy hell! That is absolutely stunning! Great work!!!

It does when you start adding everything else in. But it's not just compute. It's the logic. Getting your timing right (I'm not meaning ignition timing for the engine). Making sure of your memory mappings, seeing your interrupts. Microcontroller devices only have so much capacity. For the most part, you want all those timers and interrupts in use on your engine control, which means you're left with less than ideal methods for timing and management of other control functions. Let's put it this way, my job is all about building custom hardware, that goes into cars, and integrates with them. We're also waiting on a media confirmation from SpaceX too fora world first we've just completed with them in NZ too. It's not just the little toys I play with. But you know, you can think and believe what you want.

That butt plug looks a bit sharp...

Double sided tape one to the E34!

Could screw the headlights washers there too...

It would be harder to drop the tank of fuel, then plug in a cable and hit "load tune". The difference is, the change you are saying you'd do only removes the easiest part of the whole operation...

E30 and E85 will both be reacting with whatever they can. One just has a little less in it and will take a little longer for you to see the things it's reacting with. Plenty of replacement stuff out there that's ethanol friendly, and then it won't matter what Ex blend you run once you do a full flex tune. Also fill flex would still be beneficial to you, even for the minor % changes down at E30.

The issue still requires a human to get all the logic right, and each thing being done takes up processing power. Meaning less processing power for other tasks to occur too. It also typically means a team of size 10, is working one everything, vs 5x teams of 3 working on separate products, so less man power to review and perfect it all. That's the typical issue of AIO. It's also why manufacturers of cars even split tasks out into separate systems, and share data as required

Sometimes a piece of hardware built to do one job excellently, can be better than a piece of hardware trying to do 20 jobs "well enough".

I've got 15 year old tyres on a car in my garage, holding air (holding it better than the daily driver does!) and no signs of rotting/cracking/drying out. Oh, and they've only been garaged the last 3. Before that they sat in a couple of different paddocks/yards, and even spent about a week underwater too. However, weather and other environmental factors can really change how quickly they start to dry out and crack.

The moment I read "never brought in the 1 child policy like China" I was ready to send a reply "it's what they use the second child in china for..." Ha ha ha I can tell how quickly your brain squirrels 😛