Today I fitted a £35 'high-flow' pipercross panel filter instead of the paper filter. I have read mixed reviews with people saying they have felt gains and some people even noticed a loss!
From about 15 miles driving I have concluded... (Audi S3 8P3)
- No increase in induction nose
- Small but noticeable increase is turbo air whistle/sucking sound
- Slightly better throttle response in 3rd/4th when above 3000RPM
- Small but noticeable increase in torque, pulling more smoothly through 3000-6000
For £35 you can't really go wrong if you purchase one, especially if your old filter is dirty.
It may not be worth the ridiculous hassle to take the engine cover off/apart (took nearly an hour to fit)
Finally, I have seen some people put on a Carbon intake where the cold air feed is. I can't see this giving any benefit at all with the standard air box? Correct me if I am wrong.
So there you have my fantastic panel filter review....