shrike Posted November 13, 2020 Posted November 13, 2020 Just now, Yowzer said: Before the cat will be mint So in the bung on the cat before it goes through the cat material? I can add another bung before the flexi or further up the pipe if need be, its a 200 cell cat so hopefully not to much restriction Quote
ajg193 Posted January 17, 2021 Posted January 17, 2021 So my 14point7 Spartan2 lost it's heater output a few months ago. These things have a 2 year warranty (I had about 4 months left), so I contacted Alan at 14Point7 and he sorted out a replacement. Just received it today. Good customer service from him, would recommend. As a side note I cut the old one open and found the housing is simple 3d printed plastic 4 Quote
yoeddynz Posted January 17, 2021 Author Posted January 17, 2021 That is good service. I think I'll be getting one of them thank you please. Is the chinese bosch sensor still going ok? Quote
kpr Posted January 17, 2021 Posted January 17, 2021 Old China sensor not drawing too much current for it? Quote
ajg193 Posted January 18, 2021 Posted January 18, 2021 In other news the old controller wasn't actually dead. The new one behaved exactly the same as the old one so alarm bells went off. Turns out I just had the heater ground wire disconnected... Man I feel bad about doing the warranty claim now. Should probably send him a donation Yep, chinese sensor still works. I ordered a second as a spare but it never turned up. 2 Quote
yoeddynz Posted January 18, 2021 Author Posted January 18, 2021 I buy controller off you. give you monies i do. Five dollar. Buy now. I buy. You controller you not need. I buy. 2 Quote
ajg193 Posted January 18, 2021 Posted January 18, 2021 I cut the old controller up and bodged on a replacement mosfet. I'll have to test if it still works after my bodgery and make a new case for it. 1 Quote
ajg193 Posted January 19, 2021 Posted January 19, 2021 I'm actually extremely surprised that the chinese oxygen sensor is still outputting somewhat reasonable looking numbers after sitting in the exhaust without being powered for over 5,000 km. I'm certain it has lost some accuracy, next time I get some motivation I will through a legit sensor in the exhaust again to see how it compares. My suspicion is that it always says stuff is a little closer to stoich than it really is. Engine seems to run fine with how much it is leaning it out at any rate so I'm not going to complain just yet. 1 Quote
Roman Posted January 19, 2021 Posted January 19, 2021 I've been spending some time with ITB Alpha N setup on the Echo. It drives much nicer than I'd expect, and stays near to tune much nicer than I'd expect too. I've just tried something different though. Which is instead of having throttle position as the load axis on both fuel and ignition tables. I have TPS as load axis on fuel, then the fuel table calculations work out the airmass in the cylinder. (so this incorporates barometric pressure, IAT, etc automagically) Then I use air mass in the cylinder as the load axis for ignition timing. So this means if you are at 100% throttle but the airmass is less, it'll automatically move a little further up the ignition table and add timing. Then if the air is super cold and dense, meaning a fuller cylinder it'll pull timing to suit. Still needs a compensation table to trim timing for likelyhood of knock at high ECT and IAT, and then add timing for low ECT and IAT when motor is cold and combustion isnt great. But at least it's seperated out these variables from trying to trim for airmass as well in the compensation table. 8 Quote
Roman Posted January 19, 2021 Posted January 19, 2021 Ahh I forgot to say that one of the benefits of this, is that the shape of your ignition table doesnt have to follow the weird shape of the fuel table, that is weird because airflow through a butterfly valve is weird. Because its just looking at how full the cylinder is, it doesnt care what the throttle angle is (which makes sense) So the ignition table becomes a lot more linear, it doesnt need an aggressive ramp up of timing around the "knee" point where load drops off really quickly at a particular throttle angle. It also means, for better or worse that if you make any changes that allow your engine to consume more air (or less) when you update the fuel table the ignition table "should be" corrected to it as well without doing anything. (Double edged sword obviously) Top one fuel table, bottom one ignition table that's been translated across from my previous TP based one that was a bunch bendier: 2 Quote
Roman Posted January 19, 2021 Posted January 19, 2021 1 minute ago, ajg193 said: Similar to the GM approach? Similar to any MAF based approach I guess, with my other car using a maf both of the tables have "air per cyl measured" as the load axis. Id just never considered using a different load axis for each of the tables. But it makes some sense for Alpha N and maybe MAP too. 1 Quote
ajg193 Posted January 19, 2021 Posted January 19, 2021 I wonder if I can make the microsquirt concert map/rpm into mass per cylinder Quote
Roman Posted January 19, 2021 Posted January 19, 2021 What are your current options for load axis? You could use effective injector pulsewidth as a similar-ish thing. Quote
ajg193 Posted January 19, 2021 Posted January 19, 2021 SpeedDensity PercentBaro Alpha-N MAF ITB Quote
ajg193 Posted January 20, 2021 Posted January 20, 2021 @yoeddynz@Roman https://www.amazon.com/Replacement-Lambda-Wide-Oxygen-Sensor/dp/B07K1SMQYH/ref=sr_1_1_sspa?dchild=1&keywords=bosch+lsu+4.9&qid=1602254839&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyWkhOVUk3NllLU0o2JmVuY3J5cHRlZElkPUEwNDUyMjU0MTZaUjZFQ1RQNjRQNyZlbmNyeXB0ZWRBZElkPUEwODc1OTcwM1BFRldYRkZEMTRaWCZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=&tag=dsm0e-20 LSU 4.9 from Amazon, like $51 including shipping and LIFETIME warranty "Lifetime Warranty - This replacement Oxygen Sensor comes complete with a lifetime warranty. If the part ever fails on your vehicle simply contact us for a replacement. Save time and money and take advantage of our lifetime warranty" Most of the negative reviews were using Innovate controllers 1 Quote
yoeddynz Posted January 21, 2021 Author Posted January 21, 2021 Sweet. I need to get some of that sounds deadening mat too. Might go shopping Quote
Roman Posted January 27, 2021 Posted January 27, 2021 On 20/01/2021 at 18:15, ajg193 said: @yoeddynz@Roman https://www.amazon.com/Replacement-Lambda-Wide-Oxygen-Sensor/dp/B07K1SMQYH/ref=sr_1_1_sspa?dchild=1&keywords=bosch+lsu+4.9&qid=1602254839&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyWkhOVUk3NllLU0o2JmVuY3J5cHRlZElkPUEwNDUyMjU0MTZaUjZFQ1RQNjRQNyZlbmNyeXB0ZWRBZElkPUEwODc1OTcwM1BFRldYRkZEMTRaWCZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=&tag=dsm0e-20 LSU 4.9 from Amazon, like $51 including shipping and LIFETIME warranty "Lifetime Warranty - This replacement Oxygen Sensor comes complete with a lifetime warranty. If the part ever fails on your vehicle simply contact us for a replacement. Save time and money and take advantage of our lifetime warranty" Most of the negative reviews were using Innovate controllers I've moved on to one of these so I hopefully dont need to worry about blowing up 4.9s anymore. https://www.14point7.com/products/spartan-3-adv Only using the 0-5v output currently but even so, the response time is definitely noticably... quick But hopefully it goes for ages without blowing up a sensor. 3 Quote
Honda Ass Dragger Posted February 24, 2021 Posted February 24, 2021 Anyone played around with the Maths Logic on the G4X? Was thinking to use it for boost control - by using a comparison between front wheel speed and rear wheel speed and adjusting boost until both match Thoughts? 1 Quote
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