local to Darlington

Hi all' in having Maf problems. I picked up a digimaf on the cheap but my car only revs to 4000 when it's plugged in. If I leave the digimaf and plug the maf in as normal. It will go to red line. Is there anyone local to Darlington that would be willing to test my digimaf with your maf so I can rule out that my mAf is the problemp

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