Air cleaner in Stock Class

Jeff Lee · 03-25-2010, 03:37 PM

The K&N filter top, worthless or not for HP, is allowable per NHRA. This was an issue when they first came out. The rationale is you do not need any lid so a K&N lid is acceptable.
I always ran one in D/S with the factory ram-air system. Can't say that it helped but it certainly didn't hurt. And Arizona is somewhat dusty so I always ran a filter.
I just noticed Todd put a link to the old discussion....

03-25-2010, 03:37 PM	#14
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: Air cleaner in Stock Class The K&N filter top, worthless or not for HP, is allowable per NHRA. This was an issue when they first came out. The rationale is you do not need any lid so a K&N lid is acceptable. I always ran one in D/S with the factory ram-air system. Can't say that it helped but it certainly didn't hurt. And Arizona is somewhat dusty so I always ran a filter. I just noticed Todd put a link to the old discussion.... __________________ Jeff Lee 7494 D/S '70 AMX