RB20 misfire

[DRFERO]

i know u guys have probably had alota people talking bout a rb20 misfire...this ones very strange tho.i have a a31 nissan cefiro running a rb20de+t.it use to run mint.but now it sounds like a subaru wrx on idle and at low rev cruising...

it ran mint...then i blew the turbo.i put a new turbo on and it ran like s***.i found apon pulling the turbo off to put a external wastegate on that wen the exhaust wheel flew out my exhaust pipe it snaped the o2 sensor off...so i replaced that.changed my chiped ecu back to a standard rb20det A31 item.replaced the 2 spark plugs that snaped due to detonation...now im not getting det nemore but it does sound like its running on 5 on idle and low cruise....but when the boost comes up a bit it sounds like its on all 6??? what could be causing this...is this the ignitor f***ing out??

my car has

a31 rb20det ecured rb20det injectorswalbro 255lph pumpfront face plenumexternal wastegate3inch exhaustfront mountwasted spark setup

thats about it i think

anyone herd or know of a rb20 doing this?? like i say it never did it b4 it snaped 2 electrodes off the plugs

could it be a f***ed piston or bent valve making this noise??

any help would be muchly apreciated

[Acecool]

Coils and or igniter, does it do it when hot, or when cold, or both?

[DRFERO]

does it wen hot and cold...i thought it myta f***ed the coil as i was out of town wen the 2 sparkplugs broke and drove it home...could the coils have packed in cos they were not giving out the spark...or the ignitor

should be swaping the wasted spark system for standard coil on plug coils today

[Acecool]

Coils usually start failing when they are hot, igniter will do it all the time..

[DRFERO]

chur.so u think itl b d ignitor??? would it ov killed the ignitor if i was driving it with 2 plugs broken as the spark wouldnt ov been earthing out?it woulda been goin in2 the plug but not jumping to the electrode