Aidan's SCCA Stock Class Autocross Build (Road Course is Too Scary) - Page 240 - Miata Turbo Forum -Boost cars, acquire cats.

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Old 10-24-2015, 08:37 PM   #4781
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In other news: had a great time at the track today. Tires are still iceballs but the brakes did pretty well. I think ducting is needed, because although they performed great all day the pedal did soften occasionally. With no actual effect on braking performance. I should also think about a higher temp fluid.

Had some good dorifto moments. Most caught on camera.

Also almost got rear ended when a fox body decided he wanted to do 45 into T10...

Potentially rainy autox tomorrow. Then track season is over.

Hailey is ecstatic
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Old 10-24-2015, 08:40 PM   #4782
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Quote:
Originally Posted by aidandj View Post
Knock sensor is on the list. I have one on my VVT block. Need to get a knock module and some det cans.

Egt is easier to install and monitor. But its all going to happen eventually.

Please no arguing in my ramble thread. People might have trouble finding things about my build if you argue too much
I would look at see if there's any way to use the MS3 PRO knock module on your setup. I would guess DIY Autotune probably sells it separately. I'm using it with a VVT knock sensor, and I have confirmed that it WORKS if you setup the knock windowing correct. I like det cans too, they work extremely well but only when you wear them. The knock sensor is nice to have too since it can be up and running all the time when you aren't wearing the det cans. I too need to hook up an EGT gauge.... Same story, have the stuff, forgot to weld it in!
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Old 10-24-2015, 08:41 PM   #4783
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Also one last comment. We were not searching for power at 220hp. We were seeing what boost did. I have close to 5k on this tune I bet. All around 210-215hp. Motor runs great. Just survived another track day. (At 150hp)
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Old 10-24-2015, 08:43 PM   #4784
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I would look at see if there's any way to use the MS3 PRO knock module on your setup. I would guess DIY Autotune probably sells it separately. I'm using it with a VVT knock sensor, and I have confirmed that it WORKS if you setup the knock windowing correct. I like det cans too, they work extremely well but only when you wear them. The knock sensor is nice to have too since it can be up and running all the time when you aren't wearing the det cans. I too need to hook up an EGT gauge.... Same story, have the stuff, forgot to weld it in!
They do have a knock board. I need to read about it though. ThevtR conditioner board I'm using has space for a knock module but I need to see if it matches what MS3 wants. Where could I mount a VVT knock sensor on a 1.6...hmmm
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Old 10-24-2015, 08:46 PM   #4785
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Quote:
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They do have a knock board. I need to read about it though. ThevtR conditioner board I'm using has space for a knock module but I need to see if it matches what MS3 wants. Where could I mount a VVT knock sensor on a 1.6...hmmm
The MS3 knock module will work with a generic (Bosch I think) knock sensor. So you could easily do that, just bolt it as close as possible to the middle of the engine block. Likely a bolt for the engine mount brackets, I think that's the most common spot.

To install the miata knock sensor you'll have to find a spot on the block thick enough to drill/tap and thread it in. I have never looked at a 1.6 Block so I don't know if a suitable spot exist. Easy button would be aftermarket sensor that works with that knock module.
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Old 10-24-2015, 08:50 PM   #4786
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Does the OEM VVT ecu retard timing when knock occurs? Seems like someone should get the knock windowing off if the OEM ecu somehow.
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Old 10-24-2015, 10:25 PM   #4787
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Quote:
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Does the OEM VVT ecu retard timing when knock occurs? Seems like someone should get the knock windowing off if the OEM ecu somehow.
I don't know, I've never used a VVT ecu. The 99 ecu will retard if it sees knock, of course that's the whole point of having a knock sensor. But OEM setups use the knock sensor at low RPMs where it's much more reliable as an indication of knock. At high RPM, the 99 ecu ignores the knock sensor. What RPM the transition happens I don't know.

Regarding the windowing, that would be interesting to see what the OEM looks at.
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Old 10-24-2015, 10:27 PM   #4788
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It would be cool. Wish someone would hack the ECU and release how to do it.
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Old 10-24-2015, 10:33 PM   #4789
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It would be cool. Wish someone would hack the ECU and release how to do it.
From my experience having a tight window around peak pressure works well. I've updated knock window settings for a couple people on this forum with mine and they reported it worked better than what they were originally running. Of course every motor is different, etc etc. Disclaimer, disclaimer. If you want data on the matter, there are SAE papers on knock that plot pressure vs crank position with peak pressure at various points (and inducing knock too), and from that you can get a better idea of what crank position knock is most likely to occur and adjust your windowing accordingly.
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Old 10-25-2015, 12:03 AM   #4790
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Donuts and fast lap.

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Old 10-25-2015, 06:55 PM   #4791
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No brake rubbing?
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Old 10-25-2015, 07:26 PM   #4792
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Don't think so. I'm at auto-x right now and had no chance to look at them closely.
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Old 10-25-2015, 09:21 PM   #4793
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This car isn't leaving the garage in the rain again until it gets new tires. Getting sideways on the freeway in 6th is not something I would like to do again.

Going to buy these this week I think.

http://m.ebay.com/itm/4-NEW-205-50-15-SENTURY-UHP-50R-R15-TIRES-11250-/191721000100?nav=SEARCH
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Old 10-25-2015, 09:34 PM   #4794
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I did that once with good tires, I just forgot boost control was on and I hadn't tuned it worth a ****.

I ain't got no fancy 6 speed though.

I was about to splurge on the kumho ecsta's. Less than $300 to get through winter, then nice tires.

4 New 205 50 15 Kumho Ecsta AST 50R R15 Tires | eBay
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Old 10-25-2015, 09:49 PM   #4795
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I had those on my Subaru. Was very not impressed.
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Old 10-25-2015, 09:50 PM   #4796
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The ectsas? Or the ones I linked?

Oh and the slide was no boost control. Just slippery tires.
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Old 10-25-2015, 10:38 PM   #4797
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The ast deezums linked. They wore like ****, a little noisy, not much traction in the dry.
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Old 10-25-2015, 10:58 PM   #4798
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We're just talking tires to make it through winter till next season, right?

I do like that the cheaper ones aren't directional.

lol, the only google results for the sentury's are this thread
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Old 10-25-2015, 11:12 PM   #4799
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I'm just going to use them until track season. And put them back on the winter after that
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Old 10-26-2015, 02:56 AM   #4800
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Alright I think lighting is figured out.

Hello 60mm projector. It is waterproof. Going to mount it where the turn signal goes right now. Then pull the lense off the turn signal and bolt it back in place. Going to use some sort of small LED as a turn signal. No high beams but I think good well aimed projectors should work well.

Then I can get rid of the stupid pop ups and put my air filter there.

I picked the hella 60mm because they are waterproof and cheap.
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