Pettit Super Charger Owners
#1876
Race Steward
iTrader: (1)
Though I use the Innovate LC-1, the PLX is the best integrated WBO2S/gauge system.
Let me be quite clear - 14.7:1 for gasoline is approximate, and varied with blend, Octane, region, yada-yada-yada.
Anyway - not meaning to hijack the thread but this topic is being discussed!
Cheers,
Hymee.
PS - I'm thinking about a range of Hymee Enhanced (R) Guages to compliment the sCANalyser suite.
![Eyetwitch](https://www.rx8club.com/images/smilies/eyetwitch.gif)
#1881
Zoom-Freakin'-Zoom
iTrader: (5)
I think I am going with "Lil' Maniac"
https://www.rx8club.com/showthread.php?t=143712
https://www.rx8club.com/showthread.php?t=143712
btw, check pm..
beers
![Beer](https://www.rx8club.com/images/smilies/beer.gif)
#1882
Londons Yellow Peril
so Juan,
its always on, yet there is a switch to turn it on or off? Im not sure I get that? Or is it that there is an on off switch, but you just leave it on always?
Also you just use windscreen washer fluid bottle? so you can no longer wash windscreen, or it just uses same mix?
As for the snow controller, I take it you don't need to constantly adjust things, (unless say you are at a track day and want more meth spraying more constantly?)
Cheers
its always on, yet there is a switch to turn it on or off? Im not sure I get that? Or is it that there is an on off switch, but you just leave it on always?
Also you just use windscreen washer fluid bottle? so you can no longer wash windscreen, or it just uses same mix?
As for the snow controller, I take it you don't need to constantly adjust things, (unless say you are at a track day and want more meth spraying more constantly?)
Cheers
#1883
Registered User
iTrader: (1)
Join Date: Jun 2007
Location: Houston, TX
Posts: 1,112
Likes: 0
Received 0 Likes
on
0 Posts
I think I am going with "Lil' Maniac"
https://www.rx8club.com/showthread.php?t=143712
https://www.rx8club.com/showthread.php?t=143712
Glad to know that week at rehab worked out for you, congratulations.
![Eyetwitch](https://www.rx8club.com/images/smilies/eyetwitch.gif)
However, like Britney and Lohan after rehab, it equates to lackluster personality.
![Icon No2](https://www.rx8club.com/images/smilies/icon_no2.gif)
Can’t wait for them and you to fall of the wagon.
![Lol](https://www.rx8club.com/images/smilies/lol.gif)
#1884
Registered User
iTrader: (1)
Join Date: Jun 2007
Location: Houston, TX
Posts: 1,112
Likes: 0
Received 0 Likes
on
0 Posts
![Eyetwitch](https://www.rx8club.com/images/smilies/eyetwitch.gif)
#1885
Registered User
iTrader: (1)
Join Date: Jun 2007
Location: Houston, TX
Posts: 1,112
Likes: 0
Received 0 Likes
on
0 Posts
so Juan,
its always on, yet there is a switch to turn it on or off? Im not sure I get that? Or is it that there is an on off switch, but you just leave it on always?
My car is not a daily driven car. Therefore, I use the on/off switch while the car sits in the garage as a failsafe mechanism.
Also you just use windscreen washer fluid bottle? so you can no longer wash windscreen, or it just uses same mix?
Again, my car is not a daily driven car. Therefore, no need for me to use a separate bottle for the meth. However, the windshield washer mechanism is still functional. I wont want to spray 51/49 water/meth all over my windshield/paint.
As for the snow controller, I take it you don't need to constantly adjust things, (unless say you are at a track day and want more meth spraying more constantly?)
its always on, yet there is a switch to turn it on or off? Im not sure I get that? Or is it that there is an on off switch, but you just leave it on always?
My car is not a daily driven car. Therefore, I use the on/off switch while the car sits in the garage as a failsafe mechanism.
Also you just use windscreen washer fluid bottle? so you can no longer wash windscreen, or it just uses same mix?
Again, my car is not a daily driven car. Therefore, no need for me to use a separate bottle for the meth. However, the windshield washer mechanism is still functional. I wont want to spray 51/49 water/meth all over my windshield/paint.
As for the snow controller, I take it you don't need to constantly adjust things, (unless say you are at a track day and want more meth spraying more constantly?)
![Eyetwitch](https://www.rx8club.com/images/smilies/eyetwitch.gif)
#1887
#1888
Spy shots off the prototype Mazda RX11 in its testing faze
http://www.youtube.com/watch?v=tvCzSqEz5Gs
http://www.youtube.com/watch?v=tvCzSqEz5Gs
#1890
Race Steward
iTrader: (1)
Wideband O2 sensors and their associated control circuitry measure Lambda. For ANY fuel, the ideal air:fuel ratio results in a Lambda value of 1.0
A depletion of Oxygen in the exhaust (i.e. too rich) lowers the Lambda value (less than 1.0).
An excess of oxygen (i.e. unburned O2 = too lean) gives a lambda value greater than 1.0.
To determine the AFR once you know the Lambda, you multiply Lambda by the stoich value for the fuel being used. The problem is you don't exactly know what that value is, as it depends - it is specific to the actual blend being burned at the time.
Therefore if you are tuning to obtain an AFR of, say 14.7:1 for example, using a meter displaying AFR, the accuracy of the reading depends on the accuracy of the AFR constant built into the guage. If the fuel was stoich at 14.67:1, and you were being very parfticular on getting 14.7, but the gauge was "calibrated" at 14.1, then the reading is BS anyway, so you are wasting your time. Yes - you will be close. The same argument applied if you are tuning for max power AFR.
However, if you use lambda, the target lambda you are tuning for doesn't change with the fuel blend. 1.0 is "ideal" for any fuel. Gasoline, Diesel, Methanol, Avgas, NitroMethane, Gasoline with pre-mix, Ethanol...
Lambda is independant of fuel. It is what the computer inside the car is using. AFR is a computed number based on an assumed stoich value for the fuel.
I hope that helps.
Cheers,
Hymee.
#1897
Banned
iTrader: (3)
In a N/A application, you would just lose power.
In an FI application, you may simply lean-misfire.
Detonation would depend on whether there was a sudden temperature rise.
I actually had some 15:1 moments at 7 PSI or so on the highway in 5th gear the other day (I think I'm losing my fuel pump ballast resistor).
It just misfired, but no detonation.
#1898
Registered User
iTrader: (1)
Join Date: Jun 2007
Location: Houston, TX
Posts: 1,112
Likes: 0
Received 0 Likes
on
0 Posts
Answer:
I was messing around trying to develop a CAI along with my RB Ram Air duct. Come to find out that the air G/S ratio dropped and my A/F ratio went sky high. On the other hand, glad I’m running meth as a failsafe system.
See attached A/F readings with Ram CAI and after removing the CAI.
I was messing around trying to develop a CAI along with my RB Ram Air duct. Come to find out that the air G/S ratio dropped and my A/F ratio went sky high. On the other hand, glad I’m running meth as a failsafe system.
See attached A/F readings with Ram CAI and after removing the CAI.
![Eyetwitch](https://www.rx8club.com/images/smilies/eyetwitch.gif)
#1900
Administrator
iTrader: (7)
hymee: I am now a disciple of Lambda. Thanks!