Hi All,
I just installed my new K&N air filter on my 77 Spitfire. I was all set to
see a real difference in performance, well not really a big difference but I
really liked the idea of the chrome cleaner. Any way I got in, fired up the
Spit and went for a ride. I went for about a mile down the road and the car
acted terrible. It seemed starved for air. Thats something I didn't expect.
As I gave the car gass the RPMs came up to about 3000 then would drop back
to 2000, if I let up on the throttle the RPMs would come back up somewhat.
At first I thought it was getting too much air but it runs fine with the
stock air cleaner and with no air cleaner. I washed all the oil out of the
K&N filter filter and tried it again it seems to run better but still limits
my speed to about 65mph and the RPMs will drop off somewhat. The only
difference I can come up with is the square hole above the air intake is
restricted on the K&N but I'm not sure why it is there. The hole is above
the piston. I am inclined to cut the base plate of the air cleaner but if I
can't use it I would not be able to return it if I modified it. Has anybody
had a problem like this? O if you have any ideas on this problem please let
me know.
Thanks in advance.
Herb Hargraves
Cannan ME
77 Spitfire
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