Axial Flow Supercharger
07-06-2005, 02:38 PM
#2152
Registered User
Join Date: Oct 2003
Location: Austin, TX
Posts: 36
Likes: 0
Received 0 Likes
on
0 Posts
well I can just use the WDS but I need the turbo car first.
What units of measurements does the scanalyser use for the O2 sensor.
What units of measurements does the scanalyser use for the O2 sensor.
Last edited by slaxer07; 07-06-2005 at 02:52 PM.
07-06-2005, 07:18 PM
#2154
Registered
Join Date: Aug 2003
Location: Brisbane, Australia
Posts: 1,459
Likes: 0
Received 0 Likes
on
0 Posts
Wideband O2 data in sCANalyser comes out as a current reading, lambda or AFR (by multiplying lambda by stoich)
There is also a second O2 sensor which is a traditional sensor and you get the voltage readings from that.
There is also a second O2 sensor which is a traditional sensor and you get the voltage readings from that.
07-12-2005, 12:35 PM
#2156
Registered
The car is "supposed" to go back to Mazda this week to try to narrow down what the heck is wrong with it. Even if it does go in the shop this week, who knows if it will be back this week or next and if they have actually fixed the problem or not. Once they do, he will start installation mockup.
07-14-2005, 12:01 PM
#2160
Registered
iTrader: (1)
Join Date: May 2003
Location: PA
Posts: 3,754
Likes: 0
Received 0 Likes
on
0 Posts
something that i seem to have stumbled upon is that in open-loop the ecu is still looking at a/f ratio's to determin the cat temp (which is just a series of tables relating maf and a/f to expected cat temps) and can drastically richen the mixture if the temp calc is too high - i don't believe this would be a large problem for the FI cars since the a/f ratio is low eventhough the maf was very high, as the cat temp seems to be more effected by a/f ratio (at least from the curves i found from delphi)
07-20-2005, 03:42 PM
#2163
Originally Posted by WaitingforFI
Was that a shameless self-bump? :p
Studying your heading for a moment I am honestly honored to get this reaction from you. You've been waiting for so long for FI that you've taken it as a screen name. Well done.
Then you have an economy of posts for so long of a member.So for you to post here just because of an ongoing inside joke is nice. :D I assume you have been reading the thread and are aware of the joke.
I'm not being a smart *** here I mean it. Your welcome on our thread.
We only like politicly correct people.
That is our style PC. If you need that qualified ask RotaryGod, he types and speaks well. 
07-20-2005, 03:54 PM
#2164
Humpin legs and takin nam
Join Date: Nov 2003
Location: Clearwater, Fl
Posts: 2,433
Likes: 0
Received 0 Likes
on
0 Posts
You hate me! 
Originally Posted by Richard Paul
We only like politicly correct people. That is our style PC. If you need that qualified ask RotaryGod, he types and speaks well.
That is our style PC. If you need that qualified ask RotaryGod, he types and speaks well.
07-20-2005, 04:53 PM
#2165
Originally Posted by guy321
You hate me!
Just to show how nice I am, I still love my first ex wife. Should I ever meet her, I will always love my third ex wife.
Last edited by Richard Paul; 07-20-2005 at 04:56 PM.
07-20-2005, 05:04 PM
#2167
rock-->o<--hard place
Join Date: Sep 2003
Location: Canberra, AUSTRALIA
Posts: 3,242
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Richard Paul
We only like politicly correct people. That is our style PC.
That is our style PC.
07-30-2005, 07:57 PM
#2175
Registered
Richard get your car on the scanalyzer and data log a run through the gears. OK the first couple of gears so we don't see you on the news. Look at the airflow readings from the maf. It should match a dyno chart printout in terms of its shape. Although it won't give you a power figure, you will be able to tell from the shape of this if anything is opening or not on the street. If has been found that the RX-8 does in fact NOT like dynos. It somehow does act up and pull power out. This may be by limiting the throttle electronically or it may just sometimes not open certain valves. It apparently goes very rich on the dyno. Racing Beat has said that the car runs about 5% too rich from the factory. Dyno charts that I've seen do support the rich part of that but they are always far worse than 5% too rich. Luis Shiavo spent a few hours tuning his a/f ratio on a dyno with his Greddy turbo kit to read something like 12.7:1 afr. It was around there somewhere. It looked good on the dyno but when he drove it, it sucked! He went back to the stock maps which looked like crap and the dyno and it drove good. Look to see what yours is doing in the real world. If Mazda can't find anything wrong with your car but the dyno says otherwise, maybe the problem isn't with the car but rather the damn over protective ecu when on a dyno. The real world is where everything counts anyways.
On a side note, we will be starting an RX-8 this work for the first time under control of a Megasquirt. The first attempt will be fuel only to see how the stock ecu behaves but we are making progress. Now just get your supercharger mounting worked out!
On a side note, we will be starting an RX-8 this work for the first time under control of a Megasquirt. The first attempt will be fuel only to see how the stock ecu behaves but we are making progress. Now just get your supercharger mounting worked out!