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Old 04-21-2008, 05:06 AM
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Originally Posted by Hymee

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.
So we're talking about software interpretation of the same data. If lamda is more desireable, why don't wideband controllers use it, and why don't we use the O2 sensor signal from the car for AFR readouts?
Old 04-21-2008, 08:54 AM
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Great example of a reason not to mess with a maf tuned system without retuning BUT --great example also of what may happen once it is retuned with a true CAI!! Thanks Juan--i even have more faith in the water meth system now than I had before.
Why the hell Snow went up on there price so much? A $290 product is now over $400? WTF?
olddragger
Old 04-21-2008, 03:53 PM
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Just got back from a 2500 mile trip with the car. It was !@#$ing awesome.

The car did great; 20mpg with avg hwy speeds of 75-85 mph, and I beat the hell out of it. It can even accelerate nicely going uphill in 6th gear... I couldn't test that before last week since I live in Florida and there aren't any real hills around here. The Tail of the Dragon was a lot more fun this time than it was back in November when I went with some friends in a Dodge Durango. Following Cam through it just made it more fun.

My only issue involved occasional bubbling in my intercooler reservoir, which I hope to remedy with some of that D.E.I. Charge Chill that Juan raves about, so I ordered some from Mr. Hill this weekend and hope to get it by the end of the week.

Hopefully before Summer begins I'll be able to start my car's meth addiction, and maybe in September I'll head up for TBOD.
Old 04-21-2008, 04:00 PM
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Originally Posted by zenrx8
So we're talking about software interpretation of the same data. If lamda is more desireable, why don't wideband controllers use it, and why don't we use the O2 sensor signal from the car for AFR readouts?
Wideband controllers do use it! They just calculate and display the AFR because that is what people want to see. Sort of like Imperial v's Metric.

Why don't we use it??? I have been saying since the day I found out there was a WB02 sensor, and I could read it's Lambda reading on OBDII (i.e. 4+ years ago), that there was no need to put an additional WB02 sensor on the car. Canzoomer told me to "get over it", and others have argued it's value. Sometimes I feel like Thankfully, people are staring to appreciate it.

Cheers,
Hymee.
Old 04-21-2008, 04:05 PM
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G, thanks for the business and it shipped out today. You should have it Wednesday or Thursday.
Old 04-21-2008, 04:06 PM
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Originally Posted by Hymee
Wideband controllers do use it! They just calculate and display the AFR because that is what people want to see. Sort of like Imperial v's Metric.

Why don't we use it??? I have been saying since the day I found out there was a WB02 sensor, and I could read it's Lambda reading on OBDII (i.e. 4+ years ago), that there was no need to put an additional WB02 sensor on the car. Canzoomer told me to "get over it", and others have argued it's value. Sometimes I feel like Thankfully, people are staring to appreciate it.

Cheers,
Hymee.

Mark, I think this issue is a prime example of the benefits of being "bilingual".
Old 04-21-2008, 05:53 PM
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Originally Posted by Hymee
Wideband controllers do use it! They just calculate and display the AFR because that is what people want to see. Sort of like Imperial v's Metric.

Why don't we use it??? I have been saying since the day I found out there was a WB02 sensor, and I could read it's Lambda reading on OBDII (i.e. 4+ years ago), that there was no need to put an additional WB02 sensor on the car. Canzoomer told me to "get over it", and others have argued it's value. Sometimes I feel like Thankfully, people are staring to appreciate it.

Cheers,
Hymee.
Hmmm. As soon as I can figure out where it is, I'd follow the money
Old 04-21-2008, 05:56 PM
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Originally Posted by Hymee
Why don't we use it??? I have been saying since the day I found out there was a WB02 sensor, and I could read it's Lambda reading on OBDII (i.e. 4+ years ago), that there was no need to put an additional WB02 sensor on the car.
It doesn't appear to show AFR's under 11. That to me makes it useless since I want to know how much under 11 the AFR is. Under 10 I don't care about since the car runs like crap at that point.
Old 04-21-2008, 10:03 PM
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Originally Posted by Charles R. Hill
G, thanks for the business and it shipped out today. You should have it Wednesday or Thursday.
Thanks, got the tracking # (that was quick)

BTW, for anyone interested, you can see pictures of that 2500+ trip right here:
https://www.rx8club.com/showpost.php...8&postcount=13

and here:
https://www.rx8club.com/showpost.php...8&postcount=25

Most fun I've had in a while.
Old 04-22-2008, 09:56 AM
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hard to just drive on "flat " land now isnt it?
Nice pics and write up man--glad yall had a good time.
olddragger
Old 04-22-2008, 10:39 AM
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awesome pics Bastage!!!
looks like you guys had a great time...especially hangin out with Cam and Kandi!!
Old 04-22-2008, 10:50 AM
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none of the pictures show up for me........all I get is a little red X. They will not open up. Did you put them on photo bucket? if you did could you send me a link?
Old 04-22-2008, 11:37 AM
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Thank you, got the links -the pics are good- beautiful area - Nice family - Cam got away to, that's good. Glad to hear the 8 did it's thing properly.
Old 04-22-2008, 05:01 PM
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I finished my install of the MSD 8247s this morning. I'll post some pics soon.

Many thanks to Juan and Ray for their help.
Old 04-22-2008, 06:15 PM
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go ahead and get a water meth system while you are at it.
olddragger
Old 04-22-2008, 06:16 PM
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I'm waiting to buy one from Ray.
Old 04-22-2008, 08:54 PM
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I think the best advice for the Pettit owners is to get the IATs down to as close to ambient as possible, first, then deal with potential belt-slippage, second, THEN look into adding more stuff to the kit. Besides, by the time all that is done my spacers will be ready to go and then you guys can absolve yourselves of needing to drill anything in order to install the alky kits.
Old 04-22-2008, 09:42 PM
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Originally Posted by Charles R. Hill
I think the best advice for the Pettit owners is to get the IATs down to as close to ambient as possible, first, then deal with potential belt-slippage, second, THEN look into adding more stuff to the kit. Besides, by the time all that is done my spacers will be ready to go and then you guys can absolve yourselves of needing to drill anything in order to install the alky kits.
Sorry Ray, I just could not wait.

BTW, did your customer service folks told you about my above mentioned BHR mods backorders?
Old 04-23-2008, 08:17 AM
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Originally Posted by Hymee
Wideband controllers do use it! They just calculate and display the AFR because that is what people want to see. Sort of like Imperial v's Metric.

Why don't we use it??? I have been saying since the day I found out there was a WB02 sensor, and I could read it's Lambda reading on OBDII (i.e. 4+ years ago), that there was no need to put an additional WB02 sensor on the car. Canzoomer told me to "get over it", and others have argued it's value. Sometimes I feel like Thankfully, people are staring to appreciate it.

Cheers,
Hymee.
The more I think about the gauge thing, the more I think we use AFRs because it's more exciting to see "12.5", "11.9", and so on. Who wants to spend $300 bucks for a gauge that just reads "1"?

Last edited by zenrx8; 04-23-2008 at 08:20 AM.
Old 04-23-2008, 08:19 AM
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11.2 is what does it for me.
Old 04-23-2008, 03:35 PM
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Originally Posted by zenrx8
The more I think about the gauge thing, the more I think we use AFRs because it's more exciting to see "12.5", "11.9", and so on. Who wants to spend $300 bucks for a gauge that just reads "1"?
good point
Old 04-24-2008, 01:53 AM
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i think seeing .92 is just as cool as seeing 12.7. less is more.

beers
Old 04-24-2008, 06:41 AM
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Originally Posted by swoope
i think seeing .92 is just as cool as seeing 12.7. less is more.

beers
thats what he said!!
Old 04-24-2008, 08:33 AM
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Originally Posted by mysql
11.2 is what does it for me.
Only when the Boost controller reads 83kPa.
Old 04-24-2008, 09:10 AM
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I hear we have another pettit kit car in georgia---who is it?
olddragger


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