My engine was rebuilt recently. Only has about 3000 miles on it. I Have the Apexi N1 dual. Why is that in lower gears like first or second when i let off the gas it sometimes backfires. Never does it when i give it gas, only when letting off. Mostly happens in first..

all rotaries do it.

that means ur cool... relax every rotary motor does it... its a cool side affect

yeah, all of them do it. i was scared when mine started to do it

pay attention,,,at night it looks mad nice when you get flames out your pipes,,,people get scared lol

Whew, thats good. Im learning all this as I go. Can you tell a difference in performance if you put all new vacuum lines in and replace plugs and wires??

make sure you get NGK plugs

If your old turbo control system was broken, yes you will notice a difference. Otherwise no.

If your old turbo control system was broken, yes you will notice a difference. Otherwise no.[/quote]

yep, in my last edition of Turbo or IMport tuner, an FD gained 30rwhp cuz of problems with the old lines, when upgrading to silicon. :o