Don't underestimate it .. Even 3 or 5% bhp bump will make a difference ... I have RAMAIR and I could feel difference .. and you don't have to replace it .. clean and put it back.. ordinary paper dirty needs replacing ..Don't waste your money on aftermarket pal all you will get is a bit more noise nothing else
So all those tuners who exchange whole intake u think they gonna put standard filter in ?? I don't think so.That's the whole point! a standard filter is designed to collect the dirt and grit from the air before it gets into your treasured engine, if you don't have to change or clean the element where does the dirt go?
The only way to filter more air properly is to make the paper element bigger (more surface area) and that is the compromise the manufacturers have to face, do they fill the under bonnet with the air filters?? after market filters are generally smaller??? and have bigger holes???
If you are racing and plan to only run your car on a race circuit and also plan to rebuild your engine often then you have a different set of inputs for your compromises. now if you were planning to squeeze an R8's filter box under the bonnet of a 1.8 s then you might be getting what you want.
Yeah for an s3 which is fast of course you not gonna feel anything to just put some filter in.. for this type car you need whole air intake setup kit to make differenceObviously everyones vehicle is different and these are just my findings and experiance @AudiRace @Joxh
I felt no difference when I had a Ramair filter in my S3 and as a direct comparison I had my car on the rollers to prove/disprove any performance gains on a stock FL S3. The red line is a Ramair performance panel filter vs green line of a standard Audi (Mann branded) filter.
The results are rather interesting & speak for themselves:
Ramair panel filter- 310.4bhp(314.7PS/231.4KW) / 316.5FtLb(429.1Nm)
Standard panel filter - 309.8bhp(314.1PS/231.0KW) / 324.4FtLb(439.9Nm)
To summarise the comparison the Ramair gained 0.6bhp & lost 10.8ftlb. As a driver you basically wouldn’t feel any difference between them & this is why I wanted the real world direct comparison.