afr/egt readings

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afr/egt readings

Postby steveatyork » Sat Oct 21, 2006 5:20 pm

just being out in the gta just to see what readings im getting and after tanning the asp of it this is what im getting egt are about 830 degrees and afr is around 11.4 this is around 5.5k at a whopping 12psi of boost but it does feel pretty quick considering the amount of boost its running
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Postby Alpineandy » Sat Oct 21, 2006 6:45 pm

wayta :?
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Postby steveatyork » Sat Oct 21, 2006 7:03 pm

Exhaust gas temp (EGT) before the turbo at full throttle (12 PSI boost) was reading 830C, AFR Air fuel ratio ended up at around 11.4, was just wondering what anyone in the know made of the readings? i would think the 11.4 afr is fine at low boost (12psi) but the egt reading?????
Hope that makes sense :?: just got the gauge connected up and am interested in any comments? i.e. what egt is melt-down :wink: :)
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Postby clee » Sat Oct 21, 2006 7:04 pm

'Tis Steve the younger methinks .......( but I'm beginning to think they're one and the same :lol: )
Dunno if it's good or bad :? :?:
Last edited by clee on Sat Oct 21, 2006 7:13 pm, edited 1 time in total.
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Postby steveatyork » Sat Oct 21, 2006 7:13 pm

:) 830C, the older Steves fault Lee not logging out :roll: :) best having a pc each :lol:
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Postby clee » Sat Oct 21, 2006 7:18 pm

Catching up with myself and confusing others :lol: Edit the edit .
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Postby David Gentleman » Sun Oct 22, 2006 12:40 am

steveatyork wrote:Exhaust gas temp (EGT) before the turbo at full throttle (12 PSI boost) was reading 830C, AFR Air fuel ratio ended up at around 11.4, was just wondering what anyone in the know made of the readings? i would think the 11.4 afr is fine at low boost (12psi) but the egt reading?????
Hope that makes sense :?: just got the gauge connected up and am interested in any comments? i.e. what egt is melt-down :wink: :)


Its not too excessive, and it depends where you have got the EGT probe. On a tubular manifold setup, most of the exhaust heat builds up at the collector at the turbo, so if you probe is there, you can expect high'ish readings..

11.4 is a low AFR for power, but its probably helping you for torque.
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Postby gt5 » Sun Oct 22, 2006 12:35 pm

yeah the probe is mounted at the collector im going to turn the boost upto 1bar and see what happens to the readings
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Postby clee » Sun Oct 22, 2006 12:50 pm

gt5 wrote:yeah the probe is mounted at the collector im going to turn the boost upto 1bar and see what happens to the readings


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Postby gt5 » Sun Oct 22, 2006 2:07 pm

:lol: :lol:
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Postby gt5 » Sat Oct 28, 2006 1:12 pm

the alpine is now running 1bar of solid boost and it hasnt gone bang yet :D but the readings have changed afr/12.2 and egt/880c i might be daring and sqeeze another 1psi out of her :lol: it definatley feels alot quicker and i would say lag has increased but not enough to be concered about :D
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Postby peterg » Sun Oct 29, 2006 6:17 pm

the alpine is now running 1bar of solid boost and it hasnt gone bang yet


Bet you wished you hadnt said that now :roll:
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Postby gt5 » Mon Oct 30, 2006 3:35 pm

:lol: it could have been worse


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