Pro Mouse

iTrader: (15)

Ok amungst other crap going on ,I have all of a suddon this year am experiencing Detination.Pinging Spark Knock big time.I just thought I ran into bad gas but I have tried 3 other stations since.It acures at low 1400 to 2000 Rpms .16g/cyl to .4g/cyl .I noticed I a slow Bank1S1 .I hear the pinging on the left side.Can a Bad o2 cause this even though I dont have a SES?Thanks!
Scott

Pro Mouse

iTrader: (15)

Anyone????To the top

02sierraz71_5.3

iTrader: (2)

is the tune the same?
carbon build up?

Pro Mouse

iTrader: (15)

You know that is quite posible,I have be running Neg LTFT's for a long time
-12 to -16.I have it in the -2.3 to -4.7 now.
I pulled a couple out on Bank 1 side the looked ok.I am running TR6's for N2o.
Should I put new plugs in it?
Thanks

02sierraz71_5.3

iTrader: (2)

Ive got a similar problem when not running in sd I turn on the maf and all lt's are -10 range. dont know man are you running SD

WS6FirebirdTA00

iTrader: (33)

you could try to run a top end cleaner through it, how do your o2s look at cruising? do they move around good? have you increased timing at all?

Pro Mouse

iTrader: (15)

LT's look good at cruise,they move ok,No Timing increases

CrazeD_SS

I have the same progblem.. sounds like a crackling sound when I press the gas in that RPM range.. happens after the car has warmed up. I changed the plugs, oil, flushed coolant, did a top end cleaning, etc and it's still there.

Think ill send the PCM to the tuner and see if he can fix it..