I saw a car make less power taking the filters off. Same PSI. Cooler weather too IIRC.
Causes turbulence or something?
gimmie11's have you ran your car at the strip yet with the twins?
IDK if it was turbulence or negative charged air or something like that. I remember wondering the same thing about these filters and saw a graph was provided by K&N themselves to help with troubleshooting some guys issue. Come to find out even with the larger filters, he was not getting enough positive air charge for his set up. Whatever that set up was, I believe he needed somewhere around a 9in filter to help produce a productive charge of air which in whatever case it was resolved his issue.
This is all going on cloudy memory so do not quote me verbatim. It was based along those lines. I am sure there are recordings of both good and bad that has been well documented with these smaller filters in general. Like someone said above, even without filters all together.
What? Lmao sounds like something out of back to the future.
I'm pretty sure someone on here logged/ dynoed/ tracked with and without filters and the gains were minimal without filters.