Mine is from SSautochrome, and it's fine.
They're all the same, they all come from the same place. QC is not stringent to tolerance because of their volume and price.
FWIW, I never braced mine... Just slapped a GT on it, cut off the flange it came with and welded on a F38 TiAL.
Yup, same here.
Did 564 with a single walbro.
GT4088 and TiAL F38
From what I gathered, that resistor will help eliminate the code 24(?) for open air intake temp. that the AFM is no longer serving.
I haven't used one either.
I can't offer too much help with the cams with a piggy back fuel management.
Confirm you've wired up your afc to this diagram.
That way you know for sure that it's going from the MAP sensor, to the AFC, then to the ECU.
I'd say your cams are the source of your AFR problems to begin with.
I have 550's right now and can cruise and idle as lean as I want. (Stock cams.)
What's your base fuel pressure set at?
A quick test would be to throw some stock cams back in and note the difference.
You are indeed running...
272's are a large cam, the overbore isn't really a concern.
You probably need to consider a stand alone sooner than later. (Noting your AEM comment.)
Are you sure you have your cams degreed and set correctly?
What size injectors are you using?
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