[Gmecm] PE lean issues on a ?747 TBI

[Joe Simmons]

Per,
Quick fix for the leanout would be to increase fuel pressure slightly to 
richen the mixture.  Quickest and cheapest is to either modify the stock 
regulator or use a flat washer under the spring in the regualtor.

http://www.thirdgen.org/newdesign/tech/tbi-afpr.shtml
http://www.aces.edu/~gparmer/efi/tbi_adjust.htm are a couple of links that 
I've saved concerning DIY on the regulator.

Joe S
----- Original Message ----- 
From: "Per Lonnborg" <perlon at passagen.se>

>I know deep gearing is no good for a stock engine, the gears were changed
> from 2.29 to 2.93,
> in other words not that deep gears. I had about 4250 RPM with the new gear
> passing the finishline.
>
> About the 128 BLM readings don?t focus on them, I had the ECM resetted 
> just
> before the races, and since most of this logged data is in full 
> throttle=PE
> the O2 sensor and BLM is not correcting anything, just reading, am I 
> right?
>
> But what about my 3 questions, anyone?
>
> thanks,
>
> /Per
>
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