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Post by FFS Corders on May 31, 2018 10:06:06 GMT
Ooh exciting
I would offer my car for testing but it is running a mk2 engine so won't give much useful data for a mk1 1.8
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Post by Bilbo on May 31, 2018 13:13:36 GMT
Great write up, I'm somewhat tempted to give speeduino a go if they develop a pnp 1.8 one... Hey Guys... Don't want to hijack Bilbo's thread, but I thought I'd jump in briefly. I'm the developer of Speeduino and just finished off the initial designs for both the 64-pin NA8 and NB8a boards today. They still require testing (I need to find some cars to test on!) but these are definitely in the works  Josh Yes then, good to see you on here man. Exciting news about the 1.8 boards, will definitely open the target market up a fair bit! |
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Post by Bilbo on Jun 3, 2018 22:06:24 GMT
Ok, so made a bit more progress made today. While my slight acceleration stutter is still preset I decided I really needed to do something about how rich I'm running. We're talking 11.5-12.5 AFR at idle, so very rich, even more so when cold. Not ideal so I ran a datalog for about an hour, got all kinds of driving styles in that time. Traffic, cruising, and a fair few pulls to the redline in 1st and 2nd, maybe even 3rd. Adjusted my target AFR table slightly as the idle AFR values were a little rich for my liking. Loaded the log on MegaLogViewer, updated the AFR table to the new one, and ran VE Analyze. It made some changes including dropping a value down drastically around 5,000 rpm (I'd noticed this one value was really high compared to the others around it, not ideal). I updated the table and downloaded into my current tune on the Speeduino. Now idling at around 13.5-14.5, so a big improvement, and much closer to what I want to be seeing! Also doesn't stink of fuel when stopped, so will hopefully contribute to an improvement in fuel consumption. Today's brim to brim from 172kms came out at 26mpg, lots of hard driving though so not too concerned. I then went into the AFR/O2 menu and noticed that the Wideband Algorithm was set to "No Correction", so no corrections could be made in realtime to better suit my Target AFR table, it just goes purely off of the VE table. I hadn't changed it from the basemap, which was set for Narrowband, when I changed to Wideband I forgot to change the algorithm. Now changed to "Simple", and I've given the controller a 15% +/- Authority, so it can adjust my VE table on the fly by 15% either way to closer match the target AFR table. Much much better! Coolant minimum is set to 75 degrees C, so it doesn't mess with my warm up enrichment, and "Active Below TPS" is set to 70% as I'm quite happy with the WOT AFRs I'm seeing, and don't want it to mess with those either. The AFR does seem to dart around a little bit more than before, presumably this is due to it correcting itself constantly. Also noticed that there is a small difference in AFR reading between the gauge and the reading in TunerStudio. We're talking 0.2-0.5 AFR difference. After some research it may be a grounding issue, or the 12v live being from a different source as suggested by JoeyTalent previously. Either way it's likely a simple fix which I will get around to. Also ordered one of those cheap enclosed carbon intakes as my temporary K&N cone is heatsoak central, especially in this weather. Still seeing 55 degree temps in traffic, down to 30s when moving, but I won't be happy until I've consistently lowered it. Will update as and when I do. Driving wise it's so much better than a few days ago. Despite the slight hesitation it's pulling well now, and the top end is much smoother since I moved my hard limit up to the standard 7,250rpm, and the soft limit up to 6,900rpm, as well as advancing soft limit timing slightly. Much smoother to the redline now. Massive text post, so here's a photo of the car, freshly jetwashed, but not properly clean!  Eunos 13" wheels by Chris Oldham, on Flickr |
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Post by wannabe on Jun 4, 2018 11:30:04 GMT
I bow down to your levels of geekness in this thread lol
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Post by Bilbo on Jun 4, 2018 21:45:35 GMT
I bow down to your levels of geekness in this thread lol Haha, I love a bit of analysis, my job revolves around analysing data so this is something I don't mind getting stuck into haha. |
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Post by wannabe on Jun 5, 2018 8:12:11 GMT
I bow down to your levels of geekness in this thread lol Haha, I love a bit of analysis, my job revolves around analysing data so this is something I don't mind getting stuck into haha.
Cool, I like a good bit of analysis myself, when I can find the energy! lol
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Post by Bilbo on Jun 8, 2018 11:51:57 GMT
So I sorted out my intake situation. Went from the old clogged heatsoaking K&N cone:  IMG_20180526_163703 by Chris Oldham, on Flickr  IMG_20180607_194700 by Chris Oldham, on Flickr To this:  IMG_20180607_194159 by Chris Oldham, on Flickr  IMG_20180607_194204 by Chris Oldham, on Flickr An Ebay special enclosed filter, just £24.99. However it seems pretty well made, and is certainly doing the job, and my god it's loud! It rattles the dash on WOT, it's crazy haha. After trawling through Ebay and buying one that turned out to be out of stock, I eventually found a seller who was genuinely in the UK, lots of them seem to be from Chinese companies who have "UK stock", but with suspicious looking delivery times, I don't think most of them have UK stock, and I wanted it now. Give me convenience or give me death. Bought from here: www.ebay.co.uk/itm/CARBON-FILTER-INDUCTION-KIT-UNIVERSAL-COLD-AIR-FEED-INTAKE-60-65-70-75mm-FAN/161226168222?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649It sounds awesome, but as it replaced a crappy used K&N cone I was using temporarily, my map needs a bit of tweaking now it seems. Running a bit leaner from cold start, presumably as it's actually getting more air into the engine now. Will do some tweaking tonight, and will also run a datalog to see how much lower my intake temps are! |
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Post by FFS Corders on Jun 8, 2018 12:49:32 GMT
That looks mad. Can't wait to hear it in person
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Post by Bilbo on Jun 8, 2018 13:20:32 GMT
That looks mad. Can't wait to hear it in person Can't be worse than last month, the car had a massive miss as I pulled away, a day after fitting the Speeduino. Ed said everyone winced hahaha. Much better now, but yeah sounds ace! |
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Post by FFS Corders on Jun 8, 2018 13:30:49 GMT
That looks mad. Can't wait to hear it in person Can't be worse than last month, the car had a massive miss as I pulled away, a day after fitting the Speeduino. Ed said everyone winced hahaha. Much better now, but yeah sounds ace!
Maybe we should start filming people as they leave so everyone can join in the pain  |
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Post by Bilbo on Jun 8, 2018 22:26:51 GMT
Can't be worse than last month, the car had a massive miss as I pulled away, a day after fitting the Speeduino. Ed said everyone winced hahaha. Much better now, but yeah sounds ace!
Maybe we should start filming people as they leave so everyone can join in the pain Love a leaving car meet video, sounds good haha. |
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Post by Bilbo on Jun 8, 2018 22:33:14 GMT
So, small update. The new enclosed intake is making the map run a little less rich, so I'm putting this down to more air getting into the engine from a filter that isn't old and clogged, so that's good.
Also ran a datalog tonight, got some good data on intake temps.
Previous intake temps ranged between high 30s and around mid 50s (with a spike to 60 on a really hot day in traffic).
Intake temps now are sitting comfortably in the mid 30s when moving, and around 45ish when sat in traffic, often a little lower than that though. At one point while driving they got down to 29, which is a drastic improvement.
So that's a quick win, now to tune the VE table some more and get the AFRs where I need them!
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Post by wannabe on Jun 8, 2018 22:43:39 GMT
Nice You could buy exhaust wrap and wrap the housing (and piping?) to reduce heat-soak / intake temps? I guess you could also wrap the exhaust with it  lol (if you haven't already!) |
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Post by Bilbo on Jun 9, 2018 0:09:12 GMT
Nice You could buy exhaust wrap and wrap the housing (and piping?) to reduce heat-soak / intake temps? I guess you could also wrap the exhaust with it lol (if you haven't already!) True, manifold wrap is common but don't see it much on standard manifolds really. I would wrap the intake but I think it looks good haha. |
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Post by Bilbo on Jul 7, 2018 1:04:41 GMT
So I've been a bit quiet lately. Not too much going on with the car, bit of mapping and just enjoying driving it really. Then last weekend the slave cylinder decided to die in busy traffic, great times. Stuck in 1st gear going through central Brighton looking like a complete idiot with the loud exhaust.  IMG_20180630_151516 by Chris Oldham, on Flickr Yeah looks pretty done to me. Oil leak from above was the o-ring I think, which I've already sorted. At least the oil covered bolts were protected from seizing haha! So I drove it to 5 miles to my parent's where I was doing the work, in 2nd the whole way:  IMG_20180701_114139 by Chris Oldham, on Flickr That was great fun... So old slave taken out:  IMG_20180706_193816 by Chris Oldham, on Flickr Yeah, yeah, pretty f*cked. Here's the best bit though, check out the old clutch fluid:  IMG_20180706_194359 by Chris Oldham, on Flickr As Owen Wilson famously said, "wow". This angle is a favourite of mine, really captures the rust on the front wing:  IMG_20180706_191546 by Chris Oldham, on Flickr Endless things to sort on this car!  Anyway job done no dramas:  IMG_20180706_203026 by Chris Oldham, on Flickr My brother helped me do a two man clutch bleed and it seems to be working fine now. Bite point is quite a bit higher than before so I guess it was just dying slowly and I got used to it being much lower. I went with the cheap aftermarket slave cylinder on MX5Parts that was £15. Turns out it's an IL Motorsports one. Nothing special, I mean it's just a slave cylinder, finishing on the metal is a bit meh, few burrs and what not, but for £15 I don't care. Bit of a fiddly job overall, not much space and brake fluid manages to get on just about everything, so you're just fully lubed at all times (giggidy). I greased the new slave cylinder rod with multipurpose lithium based grease, and it seems to be perfectly quiet, so that's one less thing to think about. Bonus photos of car looking clean and not completely covered in bird crap like it is now:  IMG_20180623_202956_054 by Chris Oldham, on Flickr Mighty5s shot:  IMG_20180623_202956_052 by Chris Oldham, on Flickr Obligatory comment about Nutz being down: This is where I'm posting this now, can't be rear canoed trying to update my thread when none of the content on there displays at the moment. Shame, was a big part of me getting into 5s initially, but Daz was the man and now he's not, and the new overlords are evidently incompetent so this is where the build thread will solely continue for now. On another note, @horney if you sell to the same guys I'll set ya beard on fire.  |
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lol (if you haven't already!)
le sigh