personally like a uprated panel filter. if you have a standard one laying around do some logs with both in and measure how many G's etc in VCDS if you that bothered
I had my maf deleted when i had mine mapped to 1.9bar before i sold it, it made 250.3bhp with this filter it was way better than airbox and pnel filter which made 243ish made
Used a large cold air feed too which helped alot and a large pipercross foam filter usually used on astra vxr's
Thats how it looked on the last week before it sold, only thing mine was doing was taking longer to warm up since egr delete this filter and s3 cooler, but power output was definantly at its limit
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