i am always tinkering with the tuning on my dell but on the recent tuning my car has been backfiring about 5-10 seconds after i shut it off, not a loud backfire, but almost a sucking sounding backfire. anybody ever expierenced this kind of backfire? also just about anyway i tune it i can usually get it to backfire after i accelerate then when its hella gearing back down-------bang!
RB header to presilencer to muffler. my car is running good now i am just wondering if it is / will do any damage to my engine? i keep my idle at like 1200rmp. seems high but that what she likes.

 

yeah mine does the same thing! last night i got pulled over for expired tags and when i shut my car off (so it woudnt over heaT) it backfired and the cop thought i was shooting at him, he told me to get out of the car and made me sit in his, then he asked me "why does ur car backfire like that" and i said "ohh its a rotary"

 

you think the cop would have seen the huge flames come out your tailpipe.
probably lucky you didnt get shot!

 

Yeah, mine does the same thing about five seconds after shutting her off.

 

Sounds like to much fuel. Lean it out some.

 

i know it is too much fuel but my question is will i damage my motor, is carbon gona build up faster? i would pour the water down the carb but i've got a sidedraft, how is that suppose to work!

 

You go pouring water down your intake and your gonna have alot more problems than just a backfire, lol.

 

You use a clean spray water bottle. Spray water mist into carb while engine is running, it will want to stall, just keep the revs up.

 

Rotor 13B-

Water eats carbon away quickly, and won't damage the engine in small doses.

 

pouring water down the carb is very good for a rotary, or so i've read on this forum. where do you get your information mr. rotar13b? i would like to hear why you think it would be bad for it.

 

mine does the same thing, just a little backfire, no flames or loud bang. gonna try the water deal this weekend to see if that helps

 

how much water is needed? did about 8-10 squirts on mist with my girlfriend holding the throttle at about 4000 rpms, noticed some smoke. but do i keep doing it till i see none? also how long do you let it idle afterwards to make sure there is no h20 left in the chambers? HELP PLEEEEZ.