My rediculouse AFR Log
Thread Starter
Joined: Nov 2002
Posts: 12,752
Likes: 1
From: Laredo, Tx
My rediculouse AFR Log
Well I did an ARF log and put it in graph form:
Talk about rediculously bad tuning eh?
My EGTs were around 820C close to redline but i'm assuming thats because of the excess fuel.
Talk about rediculously bad tuning eh?
My EGTs were around 820C close to redline but i'm assuming thats because of the excess fuel.
You should have seen my numbers.
Rat's wideband was all over the place even under boost.
On the dyno I showed 14+ AFR's sniffed from the catback(I hate those afr readers). Stock ECU sucks combined with old electrical wiring.
What location was the probe? At the standard O2 point?
The bump in your looks close to but about 1k after the injector switch.
Maybe your injectors aren't doing too well. Have they been cleaned? Can't hurt to have them done anyway.
An mods? porting/walbro/etc?
edit.
lol found mine.
I had huge hesitation at dyno time. Try checking your grounds it may help smooth it out.
Rat's wideband was all over the place even under boost.
On the dyno I showed 14+ AFR's sniffed from the catback(I hate those afr readers). Stock ECU sucks combined with old electrical wiring.
What location was the probe? At the standard O2 point?
The bump in your looks close to but about 1k after the injector switch.
Maybe your injectors aren't doing too well. Have they been cleaned? Can't hurt to have them done anyway.
An mods? porting/walbro/etc?
edit.
lol found mine.
I had huge hesitation at dyno time. Try checking your grounds it may help smooth it out.
Last edited by Digi7ech; Nov 23, 2005 at 07:16 PM.
Thread Starter
Joined: Nov 2002
Posts: 12,752
Likes: 1
From: Laredo, Tx
Originally Posted by Digi7ech
What location was the probe? At the standard O2 point?
The bump in your looks close to but about 1k after the injector switch.
Maybe your injectors aren't doing too well. Have they been cleaned? Can't hurt to have them done anyway.
An mods? porting/walbro/etc?
The bump in your looks close to but about 1k after the injector switch.
Maybe your injectors aren't doing too well. Have they been cleaned? Can't hurt to have them done anyway.
An mods? porting/walbro/etc?
Location was on a WB specific bung that I had installed. I actually have two WB bungs in addition to the one that comes 'stock' on the true duals. I was concerned about high EGT creating invalid WB readings, from personal observation of a friends WB sensor freaking out with constant 800C+ EGTs. My EGTs are far cooler than his, thankfully. The bungs are both around 36"-48" from the exhaust port.
My injectors work well, I have no reason to concern myself about their status at this point.
I believe that hump was just a quick and rash decission of where to put my tuning points on the S-AFC. I'm actually working on eliminating that lean spike before moving onto leaning the high RPM portion of the power band.
Mods:
Stock port rebuild with around 40-50k miles on it.
Bareblock
K&N filter
CAI(still working on making a 3" version of my 2.75" unit so thats actually not on the car for this log)
Mazdatrix true duals
TII pump(walbro is going in quite soon)
550 primaries
720 secondaries
S-AFC for tuning(hopefully will have a Mega Squirt/Spark later)
Tech Edge 2B0 using a Bosch LSU sensor(7057 IIRC)
E-fan(stock rad still..)
The rest of the mod list isn't relevant to the fuel setup really....
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