New AFR tool shows up my Bad Tune

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Craig Smith
Posts: 67
Joined: Mon Oct 23, 2006 5:22 am
Location: Mauldin, SC
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New AFR tool shows up my Bad Tune

Post by Craig Smith »

Well, hooked up the LM-1 in my Jag with the 95 LT1 in it.

At cruise it was looking at high teens, now at idle, totally different.
It's in the high 30's.

The car has the cats on it, I am using the cast aluminum tube from innovat to mount the sensor, by there numbers, using the tube vs a bung I should see a leaner mix of about 2 10ths.
With the cats still on the car it should bring it down some more.
So if I'm getting high 30's behind the cat it's got to be 15 points higher in front!
And I though I had a decent tune in the Jag!
Ran the unit on my son's 91 5.0, 20's at idle, cruise was around 16 to 15, high twelves at WOT.

So it looks like the Jag is way off!

I love new TOOLS!!!


Not bad!
1986 Jauguar XJ6 with a transplanted 95 LT1, 1990 5.0 LX Mustang, MSD6AL, MSD Blaster coil, Shorty headers, no cats, h pipe, flow masters, Edlebrock Performer intake and plenum, Aeroquip pressure regulator.
hillbilly25177
Posts: 16
Joined: Fri Mar 30, 2007 1:09 am

Post by hillbilly25177 »

>I would say that your wacky numbers on your jag are because of taking
>
>the reading post catalytic.
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>Your sons mustang came out OK because of no cats
>
>I would bet if you put the sensor ahead of the cats on your jag it
>
>wouldn't be that lean.
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