engine pinging! knock retard 4 degrees?

[silvyrado4.8]

hey guys im new here and quite lost when it comes to reading my logs and my tuner doesnt want to help which is wait4meperformance which my problem is engines pings real bad under load and showing knock retart 4 degrees dont know if that has to do with it which if u guys can help and look over my log and give me ur thoughts its a 2004 silverado

4.8 auto ,160 stat ,no cat true dual flows,3000 circle d stall,wait4me tune 89 octane an chopped of air intake box lol sucks air just like a intake heres the log thanks alot mike

engine pinging! knock retard 4 degrees? - EFILive Forum

[trx2stroke4life39]

I cant look at the log (hp tuners here) try running some higher octane and see if that helps. If you hear pinging let off.

[GasGuzzler]

an chopped of air intake box lol sucks air just like a intake heres the log thanks alot mike

What does that all mean?

You're gonna have to try harder than that.

I'm not sure -4 is that much but if you're showing only -4 and it still pings audibly you have an issue. Have you verified the fuel system front to back? I have no experience with this tuner but I have heard bad things in this forum about it/him/her...

[silvyrado4.8]

yea i plan on getting a live street tune so from Jeremy Formato here in fl here anything good about him ? and what would cause my engine to get to much fuel to ping and what can i look for when logging

[trx2stroke4life39]

Pinging is caused by detonation which mainly from to low of a octane, and to much timing. There are other thing but those are the main reasons. If you have the abilty to change the tune pull some timing and see if the helps. Also what are you intake air temps? To much heat will cause it also.

[tiffo60]

I agree with previous suggestions, run higher octane(93). It maybe just me but I dont see the point of spending the money on a custom tune and running mid or low grade gas....

[silvyrado4.8]

the tune is a 89 octane tune which i tried running 93 octane it just didnt change the pinging and also intake temps are around 105 degrees whatsa good temp and if it helps motor runs at hotter temps when its colder outside its weird .

[trx2stroke4life39]

When you ran 93 was the tank empty or half full? For intake temps the cooled the better when driving they should be no more than 10-15 above outside temps in the summer on open road in the city they are going to be higher.

[DBRODS]

did the pinging start with the tune? If not It could be a worn out timing chain and its advancing under load.

[silvyrado4.8]

yea ran 93 oct a couple time back to back and on the log with 93 oct it dont show that much knock retard but still pings and it seems like the stock tune has more pep and has far as the timing chain motor has 44,000 miles on it could it be that already thanks guys for all ur help

mike