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gday.My has a 33 obviously rb25.We been playin with boost n now has miss fire/back fire.If anyone has this problem please can ya shed some light.Thanks i appreciate it

if your "playing" boost and havnt tuned it. it might be running rich.

get a tune....and it should be fine.

More info would be nice!!!

Playing with boost?? plug gap maybe, try closing to 0.8mm. But guessing without more info

Turbo, ecu, boost, coils etc etc

hey mate.It had a miss fire at 10 psi.Put new plugs in it.Gapped them to 0.8mm.Found minor vacum leak fixed that.Took it for a drive.Miss fire seemed to go away a little bit.Only happens under boost(heavy load).Played around with boost a little bit now miss fires bad from 8-10 psi.What do ya think this would be.Coils maybe?They were lookin the best.

hey mate.It had a miss fire at 10 psi.Put new plugs in it.Gapped them to 0.8mm.Found minor vacum leak fixed that.Took it for a drive.Miss fire seemed to go away a little bit.Only happens under boost(heavy load).Played around with boost a little bit now miss fires bad from 8-10 psi.What do ya think this would be.Coils maybe?They were lookin the best.

mine done the same wen i put the boost controller on and set it at 10psi i missed and backfired really bad i put the coils in and it all good, i done the spark plugs at the same time.

Edited by bwebbie1

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