What have you done to your car today?

The ECU doesn't have to react to the sensor within microseconds. It only has to adjust the mixture for the engine over a significant time period as long as a minute or two would probably be perfectly acceptable.

The piston crown doesn't burn out (nor the exhaust valves) in a few cycles running a bit lean. It has to run too lean for thousands of kms, all the time. Ditto with carbon build up, the engine has to run too rich as a matter of course for a long period of time.

If any engine were as delicate as you seem to be suggesting, none of them would work at all ... Even my two stroke line trimmer is more robust than this (and a bloody sight more temperamental - hate two stroke petrol engines ... ).
 
I seriously don't know why we are arguing about this as it is a role the oxygen sensor doesn't play...........

Why are we discussing something that doesn't happen..........
 
Ratbag said:
AFAIAC, I would merely like to understand this process better.
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i think this would be great in a new thread to discuss the role of the oxygen sensor?

I only said what i did, due to when i plugged in the scanner into my forester (04) when we had the stuffed oxygen sensor. The scanner enabled us to see what signals the oxygen sensors are reading and sending to the ecu. During this reading it can easily be see the oxygen sensor consistently sending feedback to the ecu of 'lean' and 'rich' readings. This is done VERY quickly and immediately changes when throttle is altered
 
Gidday again Thunder

thunder039 said:
i think this would be great in a new thread to discuss the role of the oxygen sensor?
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I agree, but I'm too buggered to even attempt it tonight. To top things off, I damaged my thumb today, so it is throbbing like hell as I type.

I only said what i did, due to when i plugged in the scanner into my forester (04) when we had the stuffed oxygen sensor. The scanner enabled us to see what signals the oxygen sensors are reading and sending to the ecu. During this reading it can easily be see the oxygen sensor consistently sending feedback to the ecu of 'lean' and 'rich' readings. This is done VERY quickly and immediately changes when throttle is altered
Click to expand...

Now those observations are very interesting, thanks.
They also appear to support what I had worked out by logic.
Of course, all this input is integrated by the firmware in the ECU - e.g. from the crankshaft position sensor ...

I've got to give this away for the night, sorry :(.
 
Just because the sensor is sending data... voltage to the ecu doesn't mean the ecu is doing anything with it.

I guess I've first got to write out open loop vs closed loop for you guys when each is used and go from there with what else yous need.
 
I think that one has to make the necessary assumption that a sensor exists for a purpose, and it is pointless even having it if the ECU is programmed to ignore its output ...

Strange as it may seem, I do understand the programming techniques involved in all the variances of the conditional statements available in (say) the C programming language. One can program a subroutine loop to ignore values outside of certain values, but it seems pointless to do this; specially in the endless pursuit of that last millilitre of fuel economy ... Also considering the possibly catastrophic effects of the out of range values.

I have provided advice that has been acted upon to very large companies (including Microsoft and MYOB, among others) regarding the structure and purpose of code that I have never seen, in order that the owner of the code could resolve problems that they could not resolve without my input ... Logic and experience has taught me rather a lot in a very long career in the IT industry.

There is heaps I don't know, of course - goes without saying.
 
The oxygen sensor has it's position. it exists to rim fuel in closed loop mode of the ecu, part throttle applications. in open loop mode when the engine is placed under excess load usually around 50% throttle plus. it is ignored, for reasons I've listed previously.

a mod should probably move all this into it's own thread.

I'm a TSQL programmer myself!
 
Just dropped my car off to get the new springs, struts and Subtle blocks put in today. Will post before and after shots later on today!
 
Fantastic :raz:
Looking forward to seeing them minas01 :)
You might like to take some before & after measurements too :iconwink:

Regards
Mr Turbo
 
minas01, Looking forward to your before & after pics :biggrin:

Subaruby said:
Fitted some "wetseat" set covers.

https://www.thewetseat.com/
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Looks good...you're not planning on going swimming with the Foz are you? :raspberry::rotfl:

They are a universal fit for seats with airbags, with an added panel at the back of the seat. This is because the kids love to put their dirty shoes on the back of the front seats.
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Yep kids sure love to do that :rolleyessarcastic::rotfl:
 
not sure if its because the kids mean to...or their feet just cant reach the floor, christ my mates in their 20's still put muddy feet everywhere!
 
Neat seat covers. I bought some "universals" on the cheap and they didn't fit really well... might have to grab these, not so much for the kids-I-don't-have-yet as it is for the not-yet-a-father-that-still-plays-in-the-mud-occasionally :P

Done during the last 7 days:

Mounted my driving lights behind the grille for a more discrete look, and to take weight off the lightbar that tends to wobble on gravel roads; also modded the grille. Note that i did remove that dead bee :P
1012107_10201489532786882_219134303_n.jpg


Made a mount for the extinguisher (I rotated it after the pic so the lever wouldn't be in the way so much)
942323_10201489532826883_556331606_n.jpg


Other things not worth any pics:
- Polished the car
- Got new insurance (I pay 100$/year less but am now insured both for civil responsibility and collision, while I was previously covered for civil responsibility only)
- Repainted the wipers
- Sprayed truckbed lined inside the roof rack for a non-slip finish and added protection
- Sprayed truckbed liner inside the compartiment that goes under the radio for non-slip finish

I think that covers it...
 
Well done Fly, great job :)

I like what you've done with the grill too :ebiggrin:
It's a mod that I've been thinking of doing for a while myself :iconwink:

Regards
Mr Turbo
 
Looks good...you're not planning on going swimming with the Foz are you?
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Probably no swimming but definitely going to the beach.

Neat seat covers. I bought some "universals" on the cheap and they didn't fit really well
Click to expand...

There were some cheaper versions but really wanted quality as I am not a huge fan of seat covers but needed to protect the seats. Next will be some decent floor mats, don't want to be scarred of sitting in the seat when I've gotten wet and muddy doing a recovery.

Not used to 4wding in a new (ish) car.
 
I do rather like my sheep skin seat covers ...
They make a decent seat sumptuous; and a crappy one bearable ... :iconwink:.
 
NachaLuva said:
Very nice Fly :cool:

How easy is the grill to remove to clean the lenses?
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As easy as it would be to remove the standard grill... in theory. Most of the clips on mine are broken, so I ziptied it to make sure I don't loose it :P
 
So got everything installed yesterday and here are the results
FYI I went with new KYB shocks, Dobinsons Springs and Subtle 1 inch blocks.
Here are the before shots:
(ignore the dent where someone backed into me in a carpark on the weekend!)







This is the rear measurement I took:


Now after shots:











And measurement of rear afterwards:



Now tell me if I'm wrong here but thats a lift in the rear of 8cm or 3.15 inches!
Surely that will settle a bit. I have double checked that all springs are in the right place and everything seems to have been installed correctly.
I don't know if you can notice it but the rear wheels seem to be angling in a bit (positive camber). The place where I got it installed did a wheel alignment and said it was all good but I am tempted to get this done again somewhere else.
Seems to be sitting higher in the rear, though Dobinsons do specify this with these springs.
 
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