Hymee Supercharger Owners Thread
10-14-2010, 11:36 AM
#32
AFR and lambda are not the same thing. The stoichiometric ratio is always 1.0 in lambda, but the AFR for a lambda of 1.0 is variable for different fuels. For gasoline, it is 14.7:1. For E85 it is 9.7:1.
I don't even know what this sentence means.
Target for what?
The stoichiometric (chemically optimal) ratio you allude to above sets a "target" of 14.7:1 for gasoline (1.0λ). Optimal AFR depends on a multitude of factors, but I am unaware of any condition on any sort of RX-8 where 12:1 is optimal.
On an NA vehicle, optimum power generally occurs around 13:1 (.88λ). On a boosted vehicle, optimum power is around 11.5:1 (.91λ).
The actual "mean" target is bracketed by rich and lean values that are also considered "optimal".
Oh, sure. When a product comes in from one of your neighbors, you suddenly want us to go all civilized?
I don't even know what this sentence means.
Target for what?
The stoichiometric (chemically optimal) ratio you allude to above sets a "target" of 14.7:1 for gasoline (1.0λ). Optimal AFR depends on a multitude of factors, but I am unaware of any condition on any sort of RX-8 where 12:1 is optimal.
On an NA vehicle, optimum power generally occurs around 13:1 (.88λ). On a boosted vehicle, optimum power is around 11.5:1 (.91λ).
The actual "mean" target is bracketed by rich and lean values that are also considered "optimal".
Oh, sure. When a product comes in from one of your neighbors, you suddenly want us to go all civilized?
10-14-2010, 12:48 PM
#33
No prob. Seriously.
BTW - 12.5:1 or so would be the "RBT" vale I'd shoot for on a fuel-challenged, NA vehicle. 10.8:1 on an FI vehicle.
If I knew that I could "trust" the fuel the vehicle is running, I'd shoot for 13.2:1 NA and 11.5:1 FI.
Of course, ignition timing is a considerable variable.
BTW - 12.5:1 or so would be the "RBT" vale I'd shoot for on a fuel-challenged, NA vehicle. 10.8:1 on an FI vehicle.
If I knew that I could "trust" the fuel the vehicle is running, I'd shoot for 13.2:1 NA and 11.5:1 FI.
Of course, ignition timing is a considerable variable.
Last edited by MazdaManiac; 10-14-2010 at 12:51 PM.
10-14-2010, 02:45 PM
#37
I just smile, and advance the timing until it pings a few times to scare them (lol wut)....
10-22-2010, 12:31 PM
#42
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iTrader: (7)
tubing: when's the install happening?
you got gauges lined up?
done any (do you even need) cooling mods to prepare for the FI?
you got gauges lined up?
done any (do you even need) cooling mods to prepare for the FI?
12-03-2010, 04:19 PM
#43
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Still waiting on the final shipment here....but ready to get started. As for monitoring, right now I'm only looking at boost and AFR. I won't be 'tracking' this car and living in a cold climate, I'm not too worried about oil temp at this time. I'll do some measurements on oil temp and intercooler discharge temp with a separate thermocouple right after the install, but no plans for a permanent gauge on either right now....Have you been having oil temp problems down under with only 1 cooler?
12-06-2010, 05:52 PM
#44
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Due to a change in personal circumstances, I am selling my car.
Will be removing the kit next week for separate sale. PM me if interested. - Edit: kit now sold.
Also have the boost, oil temp and oil pressure gauges that I never managed to get fitted. Will sell with the kit or separately.
Good luck all with your FI projects. Has been fun flying the flag downunder on this forum.
Will be removing the kit next week for separate sale. PM me if interested. - Edit: kit now sold.
Also have the boost, oil temp and oil pressure gauges that I never managed to get fitted. Will sell with the kit or separately.
Good luck all with your FI projects. Has been fun flying the flag downunder on this forum.
Last edited by Revolver; 12-14-2010 at 05:26 PM.
12-15-2010, 09:40 PM
#45
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Well, I got to the bottom of my climate control problem this week when the kit came off the car. Some other kit owners have quizzed me about it, so I need to fess up - it's not kit related at all.
I had a second oil cooler fitted after the kit went on. The utter moron who installed it took the climate control sensor off the mid-point location of the front bar to run the oil hose along it....and then clip tied it and left it dangling down next to the LHS oil cooler, where things get a bit hotter. Stoopid. Wouldn't you think Mazda had a reason for locating it where they did in the factory??? Speaka da English?? Stupido!!!
Anyway, has now been located back where it should be by someone who actually knows **** from clay and problem solved.
I had a second oil cooler fitted after the kit went on. The utter moron who installed it took the climate control sensor off the mid-point location of the front bar to run the oil hose along it....and then clip tied it and left it dangling down next to the LHS oil cooler, where things get a bit hotter. Stoopid. Wouldn't you think Mazda had a reason for locating it where they did in the factory??? Speaka da English?? Stupido!!!
Anyway, has now been located back where it should be by someone who actually knows **** from clay and problem solved.
12-20-2010, 04:04 PM
#47
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