Rattle while accelerating

shingojr · Post by **shingojr** » Mon Jan 04, 2010 9:13 am

I have been hear some rattle noise from the front when I accelerate at around 60% open Throttle from 2.5k to 4k RPM. I'm running the MAP calibration for Fujita Short Ram Intake. I return my car back to stock calibration and the rattle noise is gone. I don't have any datalog yet because I'm not sure is it safe to drive my car with that unknown rattle noise. Anyone know what might cause the problem?

all-black · Post by **all-black** » Mon Jan 04, 2010 9:37 am

maybe your hearing bad knock

shingojr · Post by **shingojr** » Mon Jan 04, 2010 10:20 am

how can i fix the problem?

all-black · Post by **all-black** » Mon Jan 04, 2010 12:14 pm

datalog. see what ur a/f ratio is check your timing reduce it if your a/f ratios are ok.