View Full Version : rev pops

06-29-13, 02:42 PM
Hey all, this might sound strange but i have never actually sat in the car and revved the engine just for fun. when I did this I noticed that when I let off the accelerator there is a popping or backfire sound as the RPM's drop. is this normal? I only revved to 3 to 4K RPM and noticed it.

I did just install an RX catch can but I never did a rev before installing to compare to.

let me know your thoughts.


06-29-13, 07:48 PM
That's normal

06-29-13, 10:34 PM
Thanks for the reply

I did a few more searches around the forum and found its something that happens with these engines, something to do with fuel mapping being a bit off on deceleration. I kinda like it so as long as its normal I wont worry.