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11-26-2020, 11:27 PM | #507 | |
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11-26-2020, 11:43 PM | #508 |
Derbo Tuning
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It's a Kremersino V2. If you hop into the apple carply thread in the technical electronics section, its is a very long winded thread about other options now.
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12-19-2020, 06:40 PM | #509 |
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Thunder thunder thunderhilllll! 2000th post!! On Dec 12th, 2020, My wife and I went to our last track day of the year. Location: Thunderhill West. Host: It was hosted by BayE30 and there were only 20 cars! This would mark the first time driving the west track on its own and it was safe to say we had a good amount of laps in. I lapped a total of 83laps and my wife got in 44 or so in her M2 as well! It was a great day to just learn the track and get familiar with the M3 again. # New setup As I mentioned in the previous post, there were a few changes. A spring rate increase and shorter spring lengths were to address low rates for track and front wheel fitment for wider 10.5" rims. New 10.5" square rims+ 275/35/18 200TW tires to replace the BBS GT4 as my dedicated track wheels. There were definitely enough changes to make the car feel a little unfamiliar!
I also added a Stand21 Club 3 series head restraint along with Quickfit Pro harness to help with the fatigue of holding myself in the stock seats during these days. This worked as good as I could ask them to. There is a little slack on the lateral support but it substantially helped me holding my torso during heavy deceleration. This allowed me to be able to downshift instead of pushing the dead pedal to hold myself in place. #Impressions My original intentions this track day was to test and tune the dampeners. Unfortunately, I was so keen on getting consistent times first that I ended up driving more than setting up. I did end up fiddling with the dampening settings but I think there is still need to address how it interacts with berms/bumps. Next year I'll try to lower the rebound setting in attempt to minimize what felt like jacking down. I'm not 100% sure if that was what I felt but it will be a good start to figuring out how to make the car float better over bumps. My best lap was 1:27.224. The laps were getting fairly consistent as the end of the day and I think it was very good for my first time at west! There are definitely places I didn't feel comfortable pushing harder due to my lack of familiarity of how the RS4s will behave at the limit. The RS4s did wonderfully at 36PSI hot for the weight of this car and I truly enjoyed driving on it. #Aftermath I ran into a few things on this extended track time. I started to experience pad knock back when the pads started to run low. It is safe to say, there are a bit low! As a workaround, a few left foot taps before the braking zone will have to do. I will have to decided what I want to do with the calipers. Either, install anti knockback springs and Cerrakote the calipers, or buy AP racing..hmmm ## Video from Obsessed media BayE30 's crew media was present doing coverage and it was pretty cool to see it from an artistic point of view. The supersprint F1 race muffler sounds good! I was around 5:38 or so in the video and scattered around the video as well. ## Video of best lap of the day Unfortunately, my new GoPro Hero9 did not work with their own GoPro Hero USB-C to 3.5mm adapter for an external mic (firmware came out this week, few days too late!). All you get is wind noise.. Thanks for reading/watching! See you next time when 2021 season starts!
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12-19-2020, 07:42 PM | #510 | |
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Nice. Very smooth driving.
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12-19-2020, 08:24 PM | #511 |
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You did some work there Derek! Man...what an awesome track. The video was awesome too! I'm voting AP brakes lol
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12-19-2020, 08:56 PM | #512 | |
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Thanks man! we need to do one soon together.
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On another note, I forgot to mention the car gave me a check engine light at the last sessions. A quick read of ISTA+ showed it was a coolant temp sensor. When I looked at the AIM Solo data, the sensor actually was reporting back prior to the last session! It was showing under 180Fs all day then suddenly shot to 185F...and the next lap it went to 404F. That defintely looks real. Turns out a chat with the folks in the track chit chat thread, that this was a common occurrence and a harness replacement is the only permanent fix! So common, that BMW even shows the harness pigtail in ETK as #17 on the diagram!! Here is the link to the issue if anyone else wants to know. https://static.nhtsa.gov/odi/tsbs/20...44020-3150.pdf Safe to say, I will need to replace that and it might be a good idea to change other items as well since the intake plenum is being removed. I'm not sure what the normal coolant temps are but it looks awfully low. It might be a good idea to swap the thermostat while I'm in there.
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12-20-2020, 12:53 AM | #513 |
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Hey Derek,
Great driving! Care to share a picture of your Go-Pro mounting setup please?
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12-20-2020, 02:39 AM | #514 |
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Good times Derek and great driving that day! ...hopefully we'll get to do another private trackday at T-Hill East next time.
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12-20-2020, 04:37 AM | #515 |
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12-20-2020, 11:32 AM | #516 | ||
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Thanks again for the invite!! Till next time
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12-21-2020, 07:38 AM | #517 |
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That video is bad assss
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12-21-2020, 12:25 PM | #518 |
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derbo you're going to have to help me w/ a video/mic setup for the spring! That way, y'all can see how much of a noob I am lol
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12-21-2020, 04:54 PM | #519 |
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Nothing special! a GoPro mount, with an external mic. I set it to 1080p@60fps with spot meter pointed at the windshield so the outside doesn't get overexposed. It does make the interior underexposed but thats okay.
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01-01-2021, 10:39 PM | #520 |
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Happy New year everyone!
Just some extra artsy photos from the Obsessed Media from 12/12 Thunderhill. Can't wait to go back soon! That's me in the helmet chatting about lines.
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02-28-2021, 09:45 PM | #522 | |
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# Jan-Feb Update Just a minor update as not much as happened recently. #Check check engine lighttt From my last major post, the car registered a CEL for coolant temp sensor. As many mentioned in the track chit chat thread, it was actually an issue with the wiring too. Sometime around mid-January, I replaced the coolant temp sensor, sensor wire, and the fuel breather valve as well. Nothing to report besides no more CEL and coolant temps are accurate again. #Driver engagement changes Two items have been on my "to buy" list for god knows how long. Ultimate clutch pedal and Autosolutions SSK. ## Ultimate Clutch Pedal Why? The stock pedal definitely leaves the driver wanting a little more for engagement as it is too soft. Short throw pedals have been around for earlier generations of M3s. Mason engineering makes it for E46s and Ultimate Clutch pedal makes one for E9x, Fxx models. EAS said it best so I'll just quote them. Quote:
Ronald is a 1.5-man shop and friends praised him for a few decades now. The made to order spec short shifters are no strangers on this forum and the best stock looking shifter one can order. I had hesitations on what to do as there were folks wanting reductions between 12%-25% and I didn't know what I wanted. This stalled for at least a 2 years.. It will be a shame when he retires as I don't know anyone else doing this type of custom work. So the reason I mentioned these two items is because I met up a few old coworkers last Sunday. One of them bought a Silverstone E90 ZCP awhile back and it also just so happened there was an ultimate clutch pedal and an autosolution ssk in it! He specced it to be 20% + 80A shifter bushings. The biggest question I always had was if 20% was too much or not enough. With one sit-down in his car, I knew I would be ordering some parts during the week. Monday, I ordered the ultimate clutch pedal from EAS. Tuesday I spoke with Ronald@Autosolutions for 30minutes on the phone. We chatted about what I wanted to do with the car and ended up at 22.5% reduction, 80A shifter bushings and 13mm height . The 13mm increase is raise the F10/ZHP knob back to OEM height . He is in the middle of moving his shop so ETA is end of April but he may push it back to June if it misses his cutoff. Sunday, I installed the Ultimate clutch pedal without much fuss. I removed the bigger outer spring as many have done on this forum and set it to the middle position on the pedal. So far it feels more fluid and slightly stiffer without overdoing it in case I do get stuck in traffic. Cheers! I also did track prep by swapping pads and doing an inspection as I'll be at Thunderhill 3-mile next weekend 3/6!
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02-28-2021, 10:15 PM | #523 | |
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That pedal looks like a great upgrade.
I've tried a 20% autosolutions SSK before and it was really, really good. I'm not surprised you were sold on it so quickly.
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02-28-2021, 10:23 PM | #524 | |
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It will be nice to see my Autosolutions setup at 22.5% reduction with OEM height ZHP knob. As many on this forum has mentioned, it changes the driver engagement on this car. Can't wait! ETA April!
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02-28-2021, 11:37 PM | #525 | ||
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Looks like you'll have to do another track day and test the SSK out, haha.
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03-01-2021, 12:27 AM | #526 | ||
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03-02-2021, 11:56 AM | #527 |
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deng i need to order one right away then. Still waiting for my friend's 18% reduction to go in, then i will try his right away.
I have a feeling i want lots of raised height and like 30% reduction.
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03-02-2021, 03:28 PM | #528 |
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Well get him to get it installed already?!?!!!!
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