By now there have been many filtration tests that show that compared to full flow paper filters in a proper airbox that almost all (if not all) gauge type filters (K+N etc) let a large amount of fine particulate matter through the filters.
The question is: how much damage is this extra injested particulate matter doing to the engine and which parts?
I assume piston rings would suffer?
I assume changing your oil more often to remove particulate matter may help?
Maybe the heat of combustion destroys /renders ineffective particulate matter?
Maybe those particles don't do any damage?
I'm very keen to to hand onto my stock airbox and full flow paper filters but wonder how much loss of go I'll suffer once I go above the current MHD stage 2+ at 400 bhp crank onto the the TTE500 turbos to be fitted in the winter?
A brief test of no filter /airbox lid showed we moved from 400 bhp to 407 bhp.
All this on an E89 35is..
Comments pls?
The question is: how much damage is this extra injested particulate matter doing to the engine and which parts?
I assume piston rings would suffer?
I assume changing your oil more often to remove particulate matter may help?
Maybe the heat of combustion destroys /renders ineffective particulate matter?
Maybe those particles don't do any damage?
I'm very keen to to hand onto my stock airbox and full flow paper filters but wonder how much loss of go I'll suffer once I go above the current MHD stage 2+ at 400 bhp crank onto the the TTE500 turbos to be fitted in the winter?
A brief test of no filter /airbox lid showed we moved from 400 bhp to 407 bhp.
All this on an E89 35is..
Comments pls?