miataturbo.net-like debauchery thread (about the ND or something)
05-24-2016, 06:05 PM
#2581
SAAB was doing it without a sensor back in 2004ish.
Its kinda neat how it determines the mix, heres how I understand it. When the ECU sees that there has been a "refueling event" (i think its more than 10 liters according to the MIU) it forces a re-adapt cycle. During the first few minutes of driving the ECU determines with the o2 sensor the amount of correction require to achieve lambda=1, and basically it can just figure out the ethanol content from that info. Thats being overly simplified I'm sure, but thats the basic idea, theres no flexfuel sensor like most flexfuel cars, so no extra sensors to go wrong, an excellent solution IMHO.
SAAB does it the easy way. There is Multiple maps (t7) one for gasoline and one for e85, and calculated on Mass Air Flow and Lambda the car know the percentage of ethanol in the tank. This works amazingly good and even at -20-degres celsius the car starts like normal...
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05-24-2016, 06:19 PM
#2584
As we all know, fuel blending specs vary by season.
The ASTM spec permits E85 to be as as low as E70 during winter, but requires a minimum of 79% alcohol for Class 1 during summertime.
http://www.cleanairchoice.org/pdf/Ethanol%20Specs.pdf
http://ethanolrfa.3cdn.net/4eea401b7..._nrm6bhv0i.pdf
The ASTM spec permits E85 to be as as low as E70 during winter, but requires a minimum of 79% alcohol for Class 1 during summertime.
http://www.cleanairchoice.org/pdf/Ethanol%20Specs.pdf
http://ethanolrfa.3cdn.net/4eea401b7..._nrm6bhv0i.pdf
the station 2 miles from my house is e85, which is actually 85% most the time, at worst 80%, year round. It's some Valero.
Sadly, the shell/propel stations around here are all 70% for some reason.
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06-16-2016, 07:51 PM
#2587
My evil plan . . .
1. 2018-19 Sport (give them a couple of years to fix the gearbox and whatever other issues come up);
2. Swap in LSD from a wrecked 2016 Club;
3. Add the ND XIDAs, 6ULs and recommended sways that will be out by then;
4. Add ND roll bar;
5. Add long-tube headers, exhaust and tune to add 40ft-lbs across entire rev range;
6. Profit!! 
Modernized 95R project!
1. 2018-19 Sport (give them a couple of years to fix the gearbox and whatever other issues come up);
2. Swap in LSD from a wrecked 2016 Club;
3. Add the ND XIDAs, 6ULs and recommended sways that will be out by then;
4. Add ND roll bar;
5. Add long-tube headers, exhaust and tune to add 40ft-lbs across entire rev range;
6. Profit!!
Modernized 95R project!
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06-17-2016, 02:49 AM
#2589
I am considering a Sport, as well. The stock LSD isn't very expensive, but it also isn't very good, so waiting for an OSGiken is probably a good thing. The stock one, however, could be installed at first, as a stop-gap measure, and then you would have an entire open OEM assembly to put a OSG in when it releases.
I think I would miss the stock better stereo in the Club or GT and the eventual display gauges that will come out for the dash screen, though.
I think I would miss the stock better stereo in the Club or GT and the eventual display gauges that will come out for the dash screen, though.
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06-17-2016, 08:38 AM
#2590
mkturbo.com
iTrader: (24)
Join Date: May 2006
Location: Charleston SC
Posts: 15,178
Total Cats: 1,681
My evil plan . . .
1. 2018-19 Sport (give them a couple of years to fix the gearbox and whatever other issues come up);
2. Swap in LSD from a wrecked 2016 Club;
3. Add the ND XIDAs, 6ULs and recommended sways that will be out by then;
4. Add ND roll bar;
5. Add long-tube headers, exhaust and tune to add 40ft-lbs across entire rev range;
6. Profit!!
Modernized 95R project!
1. 2018-19 Sport (give them a couple of years to fix the gearbox and whatever other issues come up);
2. Swap in LSD from a wrecked 2016 Club;
3. Add the ND XIDAs, 6ULs and recommended sways that will be out by then;
4. Add ND roll bar;
5. Add long-tube headers, exhaust and tune to add 40ft-lbs across entire rev range;
6. Profit!!
Modernized 95R project!
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06-17-2016, 01:49 PM
#2594
Boost Pope
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,076
Total Cats: 6,631
Any reason we can't have separate high/low valving on rebound?
I dunno, it just seems kind of lazy. I'm sure they work ok, but I just don't know if they have enough ***** on them to really qualify as the sickest coilovers on the market. They need to be, like, 20% more dope.
(ducking)
j/k, man. Those plots look amazing.
I dunno, it just seems kind of lazy. I'm sure they work ok, but I just don't know if they have enough ***** on them to really qualify as the sickest coilovers on the market. They need to be, like, 20% more dope.
(ducking)
j/k, man. Those plots look amazing.
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06-17-2016, 02:21 PM
#2596
Any reason we can't have separate high/low valving on rebound?
I dunno, it just seems kind of lazy. I'm sure they work ok, but I just don't know if they have enough ***** on them to really qualify as the sickest coilovers on the market. They need to be, like, 20% more dope.
(ducking)
j/k, man. Those plots look amazing.
I dunno, it just seems kind of lazy. I'm sure they work ok, but I just don't know if they have enough ***** on them to really qualify as the sickest coilovers on the market. They need to be, like, 20% more dope.
(ducking)
j/k, man. Those plots look amazing.
__________________
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06-17-2016, 06:14 PM
#2597
Senior Member
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Location: Goleta, Southern California
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Maybe the racetech suspension book I read is out of date or old school or something, but why would you want or need high and low speed rebound adjustment? With any given spring rate, doesn't the suspension always unload at the same rate? I understand why high and low compression, but rebound? I don't get it.
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06-17-2016, 06:47 PM
#2598
Elite Member
Join Date: Mar 2007
Location: Santa Clara, CA
Posts: 5,172
Total Cats: 856
Maybe the racetech suspension book I read is out of date or old school or something, but why would you want or need high and low speed rebound adjustment? With any given spring rate, doesn't the suspension always unload at the same rate? I understand why high and low compression, but rebound? I don't get it.
--Ian
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06-17-2016, 08:55 PM
#2600
Boost Pope
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,076
Total Cats: 6,631
Maybe the racetech suspension book I read is out of date or old school or something, but why would you want or need high and low speed rebound adjustment? With any given spring rate, doesn't the suspension always unload at the same rate? I understand why high and low compression, but rebound? I don't get it.
For an uneven road surface, the rate of acceleration of the suspension in rebound increases as the rate at which the road is falling away from the vehicle increases.
But more specifically, it was just the setup for a joke.
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