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Old 06-26-2002, 12:17 AM   #1
roybfr
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Default Any one using GReedy Air Fuel gauge

On one of the vendors web sites I saw the GReedy A/F guage that came with it's own heated O2 sensor. I was wondering if anyone was using this setup, what you think of it and where you installed the O2 sensor.

Troy
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Last edited by roybfr; 06-26-2002 at 12:22 AM.
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Old 06-26-2002, 01:23 AM   #2
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does riftswrx use one of these?
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Old 06-26-2002, 02:07 AM   #3
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I had one and did not like it. I found it to be just as limited as any narrow band 02 sensor and that it was useless for tuning. I have since ordered a wideband 02 meter so I can actually get some tuning done.

However, it is much better than nothing. My gripes are as follows:

-usless at idle
-poor integrated heater (takes a while to heat up)
-impossible to read (as it bounces around to much... yes I broke it in)
-i couldn't trust it, I just never could (bad karma if you will).

However, this is just my opinion and many people like it. Compaired to a christmas tree, its really a good unit. It really comes down to what you're gonna use it for. If its just to keep an eye on things, I say two thumbs up. If you're trying to tune a Link or other ECU with it, save your $$$.

Dan
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Old 06-26-2002, 05:51 AM   #4
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Jorge aka RiftsWRX says that his greddy gauge seems to match his datalogging with the Deltadash and his actual wideband unit. That is not a bad deal considering it's only about $255. If you truley think WB is the way to go, look at the DIY kit from OZ, it's roughly the same cost, but you have to put it together yourself.
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Old 06-26-2002, 06:07 AM   #5
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it's GREDDY with 2 D's for the 500th time!!!!!!!!
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Old 06-26-2002, 07:48 AM   #6
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Am I wrong but I though there were two Greddy guages. One with the stupid lights reading pretty much lean or rich and the other read actual A/F ratios like a guage with needle.

Am I off on this?

-Jonathan

Quote:
Originally posted by DanMan
I had one and did not like it. I found it to be just as limited as any narrow band 02 sensor and that it was useless for tuning. I have since ordered a wideband 02 meter so I can actually get some tuning done.

However, it is much better than nothing. My gripes are as follows:

-usless at idle
-poor integrated heater (takes a while to heat up)
-impossible to read (as it bounces around to much... yes I broke it in)
-i couldn't trust it, I just never could (bad karma if you will).

However, this is just my opinion and many people like it. Compaired to a christmas tree, its really a good unit. It really comes down to what you're gonna use it for. If its just to keep an eye on things, I say two thumbs up. If you're trying to tune a Link or other ECU with it, save your $$$.

Dan
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Old 06-26-2002, 08:37 AM   #7
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Greddy only makes one unit and it is actually pretty good. You can also calibrate it which is nice. The sensor is heated and does need to warm up but overall a much better choice than many others on the market. Plus has peak hold, warning and memory features.
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Old 06-26-2002, 09:07 AM   #8
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Quote:
Originally posted by ellisnc
it's GREDDY with 2 D's for the 500th time!!!!!!!!
Whoa sorry didn't mean to upset you, Since you are a "Specialist" do you have something more to add aside from correcting my misspelling? Like telling me not to call nitrous NOS. I usually spell check my posts but Greddy is not in my sell checker, so I do apologize for ruining your night. Get over it.

Everyone else thanks for the info. One question still unanswered though and that is where to put the sensor. I could retap the rear location after the last cat and put it where the stock one is. Then get a resistor for the stock so that I don't get a CEL. IIRC some who have gotten wideband put it in their uppipe.

Troy
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Old 06-26-2002, 09:16 AM   #9
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Quote:
Originally posted by DanMan
If you're trying to tune a Link or other ECU with it, save your $$$.
If you're trying to monitor a Link's A/F ratio while it's in closed-loop, ANY A/F gauge (including a wideband) will bounce around. Ignoring the fact that the GReddy's bells and whistles (peak hold, warning) are all useless, it's probably the best A/F meter you can buy for under $300.
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Old 06-26-2002, 09:20 AM   #10
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datalogging is a bell and whistle that is manditory...

a wideband would be great to have...but its not necessary...

personally, I am going to get one...
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Old 06-26-2002, 09:29 AM   #11
roybfr
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Well maybe this is a stupid question, but is there enough A/F info in a Delta Dash Log to properly tune or wideband O2 meter needed.

Troy
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Old 06-26-2002, 09:38 AM   #12
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a car be tuned with a narrow band...
a wide band is just a really really nice tool to have...


I'm curious...I've seen poeple who have widebands put them int he down pipe. Why wouldnt you just replace the front? or tap it in the same area for quicker response?
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Old 06-26-2002, 09:39 AM   #13
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Ok.. as stated before the Delta Dash or I think more precisely the factory 02 will not read below 11.1:1. There are points where you may want to be more rich than that so in that respect the DD is not ideal for tuning.

My Link will be here today or tomorrow so I am interested in a solution for tuning. I would like to use the Greddy guage however I need something that will output to a data file so I can check graphs.

What affordable solution can I use that will both output to data file for graphs and give me readings below 11.1:1?

-Jonathan
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Old 06-26-2002, 12:33 PM   #14
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Quote:
Originally posted by roybfr
Everyone else thanks for the info. One question still unanswered though and that is where to put the sensor. I could retap the rear location after the last cat and put it where the stock one is. Then get a resistor for the stock so that I don't get a CEL. IIRC some who have gotten wideband put it in their uppipe.
i put mine at the bottom of my downpipe.
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Old 06-26-2002, 12:47 PM   #15
mynew02
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Will the Greddy guage fit the Vishnu uppipe bung or must you use the one provided?

-Jonathan
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Old 06-26-2002, 01:03 PM   #16
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I am considering the Greddy A/F gauge for my PDE up-pipe. It uses the 18mmX1.5mm thread that is common to O2 sensors. For the range it measures and the cost, I don't think it can be beat. The only other option is much more advanced and costly. That's the five-wire WB sensor from FJO. The sensor is $225 plus an additional required control unit for a few more hundred bucks and a display for another hundred or two. Looking at $750 to get the cheapest configuration with data-out capability. Oh yeah, the WB is only reliable to 10.0

If there's anything else in between, I haven't found it.

Wilkey
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Old 06-27-2002, 12:57 AM   #17
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Nope, thats pretty much it sadly. The Greddy is worth a shot if you are just using it for reference.

If you plan to tune an ECU with it, its not worth your money. You'll need something more accurate and reliable.

Dan
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Old 06-27-2002, 07:50 AM   #18
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Quote:
Originally posted by mynew02
Will the Greddy guage fit the Vishnu uppipe bung or must you use the one provided?

-Jonathan
anyone?
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Old 06-27-2002, 08:31 AM   #19
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I want to get an S-AFC to tune A/F after I get a new turbo and fuel pump. Can I use the GReddy unit to tune the A/F and where would I put the sensor in?
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Old 06-27-2002, 08:49 AM   #20
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Quote:
Originally posted by DanMan
Nope, thats pretty much it sadly. The Greddy is worth a shot if you are just using it for reference.

If you plan to tune an ECU with it, its not worth your money. You'll need something more accurate and reliable.

Dan
Dan

If the Greddy is not that accurate why would it even be useful for reference. Better yet how is it not accurate or not up to snuff compared to the more expensive wideband ones. I have read alot of the Link threads and IIRC that you need to set the A/F from idle to full throttle with it, but I don't have the Link and other Self Tunable ECU so I could be off.

Also based on the thread is it correct to assume that reguardless of what A/F monitoring system you are using the probe should be in the uppipe.

Troy

Last edited by roybfr; 06-27-2002 at 08:54 AM.
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Old 06-27-2002, 11:02 AM   #21
mitch808
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Quote:
Originally posted by DanMan
Nope, thats pretty much it sadly. The Greddy is worth a shot if you are just using it for reference.

If you plan to tune an ECU with it, its not worth your money. You'll need something more accurate and reliable.

Dan

Hmmm interesting thought on the Greddy unit. You know others have had their gauge match up exactly to their wideband unit and datalogging from the Delta dash. You do know that the included O2 sensor albeit 1V is proprietary and much more sensitive then the OEM sensor? I dont know the exact details on the sensor, but it's nothing like stock.

Either way, for under $350 you can have the DIY wideband kit from OZ put together. So that maybe an alternative for cheap wideband
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Old 06-27-2002, 11:22 AM   #22
roybfr
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Mitch

Do you have a link to the OZ site or an email for contact so I cna check out what the DIY contains.

Troy
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Old 06-27-2002, 12:02 PM   #23
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Old 06-27-2002, 12:21 PM   #24
roybfr
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That looks pretty decent, I am not sure if my soddering skills are up to the task though.

Troy
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Old 06-27-2002, 02:08 PM   #25
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First off, you absolutley SHOULD NOT place this sensor in the uppipe. The directions that come with the unit specifically say the sensor is to be mount ~2ft from the back of the turbo.

A 1v O2 sensor would not be able to read remotely accuratley in the uppipe as the EGTs would screw up its reading to much (showing leaner values than are actually present).

Now, I say you can't tune with it because it just is not stable enough. There is no way to figure out exactly what you A/F is by looking at the unit as it bounces around too much. If you are using a digital display w/ a WB, its much easier to reference the actual A/F and even compair it RPM.

It will be a very useful gauge though for reference. I say this because it gives you a general idea of whats going on with your A/F. I would say its in line with your factory coolant temp gauge. Its good to have it there, but you know that its really only telling you part of the story.

If you want a more accurate way to watch your 02, I suggest you get the jumptronix monitor. It shows the voltage coming out of the 02 sensor and allows you to decide what it really equates to, not a gauge.

Dan
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