Im Getting Desperate

Started by davehg, May 19, 2005, 09:14:04 AM

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Spotlamp

#30
May 23, 2005, 01:51:23 PM
Oops, sorry, my bad :)

Thanks for the correction.

H

QuoteOriginally posted by 20B_boy
Bit of confusion here i think H. :)

ROUGHLY (i.e. open to the individuals interpretation and experiences and what fuel/additives u are running - you could add or subtract half an AF easily):

12:1 lean (power)
11:1 in the middle
10:1 rich (bogging)

nikp

#31
May 23, 2005, 03:05:15 PM
Quoteas far as I was aware, anything much over the 11.5 mark is getting on the bad side of lean.

That\'s my understanding too - which is why it\'s worrying that mine had a reading peaking at 65 at low revs when i took mine up to WGT!! Going back up this week to get that sorted now!!

shaunwil

#32
May 23, 2005, 04:53:38 PM
So how does it all relate to the figure shown on the pfc ???

Shaun
1994 White FD with A-spec GT3574R - 358bhp at the hubs at 0.9bar :3gears-lh
2003 Mondeo 2lt 130ps Diesel Estate Daily :driving

20B_boy

#33
May 23, 2005, 05:17:39 PM
QuoteOriginally posted by nikp
That\'s my understanding too - which is why it\'s worrying that mine had a reading peaking at 65 at low revs when i took mine up to WGT!! Going back up this week to get that sorted now!!
Woooh, we are talking about different things here; H was referring to A/F ratio measurements not Commander knock readings!

Spurious \'Knock\' readings on the commander vary very much from car to car, some suffer, some dont. If you are getting \'high\' knock under full load (i.e. full boost, rpm-regardless) then take it seriously! If you\'re getting the flashing light on lift off or cruising then its not likely its much to worry about I would say. The max I\'ve seen on one car was 207 on lift off - along with lots of 180\'s - but under load its f/all and the car runs great with no problems ever. I\'m happy the tune is perfect and very safe - and given the life it has it would\'ve **** itself long ago if it were a problem - its just an annoyance ofdten more apparent on older cars. I still keep an eye on knock readings periodically on the commander under high load but otherwise I\'m not worried by the peak readings.

One of THE Datalogit guys used to report and completely ignore 130+ knock readings for whatever that may be worth...

Basically, dont dismiss PFC knock levels but pay attention to when they peak and if still unsure take it to your preferred tuner to get checked out on their wide band lambda gear...
R.

nikp

#34
May 23, 2005, 06:14:14 PM
Nope - I was referring to A/F ratio too! Mine was massive! I have a graph to prove it - kindly supplied by WGT!! :p
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