munn79ta

This is what my tuner is saying

Okay, at 5 or so PSI I am making 418/408 and a lot of KR with me at just 12 degrees of timing.
It could be false know due to the exhaust dumping where it is or a rattle. But with a boosted car I hate to turn off the knock sensors in case it is real.
I can try turning them off if you want, but if you say okay and something happens I am not to be held responsible.

Any thoughts what issues could be?
Car 98z on3 non ac 76mm kit tick stage 1 cam with 317 heads 60lb injectors single walbro. Plugs gapped to .30 running 7lb wastegate spring
Any help asap is appreciated!

munn79ta

nobody?

hellbents10

iTrader: (10)

98's have serious false knock issues, I would turn them off as you should rely on them to save an engine.

Sarg

iTrader: (6)

Maybe tighten up those plugs. Are you using 1 step at least colder plugs? What air fuel is it at when it is knocking?

munn79ta

we turned off knock sensors, plugs are br7's. car is now making lots more power now with only 5lbs that creeps to 7....
i dont know what a/f it was "knocking" at but tuner said it had decent a/f

Thanks for your replies guys.

Hank Peabody

iTrader: (2)

Might put some race gas or Torco in it just to be safe while learning what the setup likes!

munn79ta

i plan on adding meth to it when i get my boost controller and tune for 10lbs

EFX_DAVE

Pull a plug and read it, only real way to know what's going on.

ghost-1

iTrader: (4)

I had this problem before I had to buy 2 new knock sensors from GM to fix it. I had tried 2 from the parts store and they were junk and continued to show knock no matter what. Bought one sensor from gm and it took care of the #1 side then replaced the other and boom knock free.

munn79ta

hey ghost-1 was your car a 98? and i understand that reading a plug is the only real way to see what is happening. i picked the car up yesterday and will be pulling plugs this weekend.

ghost-1

iTrader: (4)

My car was an 01 z06 with a 402 solid mounts and a 88mm turbo. I fought with the issue forever.

munn79ta

i was thinking about this

http://www.tickperformance.com/knock...8-ls1-engines/