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BAMM: Big Ass Modshack Maf Mod

According to calculated ID differences with the stock MAF housing, this should flow 10% more air. Velocity will be lower and reduce G/Sec readings proportionately, but use of 4 bar FPR seems to bring everything back into line nicely. Driveability, low end grunt and tip in power all seem to improve nicely. It is a mod you can definitely feel. All Fuel issues are now in line with the FPR. No cels, and within 4-6% of 0 adaptation levels! Write-up here:

A 4 bar FPR Bosch # 0 280 160 575 is necessary for this mod (2001 Passat 20v)

MAF shootout: VW VS OEM:

Album was created 14 years 6 months ago and modified 13 years 9 months ago
MAF screen removal

After reading this article I decided to remove the MAF screen and vane straightener as it appeared to be a significant restrictor of intake efficiency. The before/after graphs speak for themselves. This might not work as well with the OEM airbox as that's where the flow straightener comes into play. CELs have been reported with the stock box (air turbulence across the MAF element).

Use the beer can trick to remove without damage!

Album was created 16 years 1 month ago and modified 13 years 2 months ago
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Hitachi MAF/Mofo..
Album was created 9 years 8 months ago and modified 9 years 8 months ago
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Mafectomy (from McpaudiTT)
Album was created 12 years 6 months ago and modified 4 years 11 months ago
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