After many attempts, i still cant figure out why my truck wont stop pinging.

Well today i went to see Byron my tuner at Apex in San Jose CA.
i went to see him due to the fact that my truck keeps pinging at WOT. Well byron checks my tunes both the street and race side and notices that they were both set to 20 degrees WOT timing. We turned the street side down to 13 due to the 91 octane in ca and we turned the race down to 16.

I took the truck aroung the block to test for pinging on the new setting and the truck still pinged. Byron was shocked to hear that the truck was pinging at 13* of timing. From there we turned it down to 11* where it seemed to run okay except for the fact that it was slow as all hell.

Can someone tell me why my truck pings wth anything over 11* of timing?? I just want to blow this piece of ***** up, i am so frustrated. My mods are in my sig below. Any help would be greatly appreciated. what can i do to stop the pinging. By the way the plugs are gapped at .36

Byron suggested that my plugs may be fried from pinging at 20*?? Please help

 

hope you mean .036 gap

i would try a smaller gap and probably a tr-6 with that 6 pound pulley. either way all the plugs and check them, change fuel filter and check that all your vacumm lines are connected and you are getting the proper fuel pressure under boost.

 

My mistake i meant a .036 gap. i heard that the tr-6 are only one step colder while the BR7 is 2 steps colder therefore wouldn't the tr-6's make it ping worse.

I changed the feul filter a little over 1,000 miles ago so i dont think that could be the problem. is there any way to find out if i am getting full feul pressure w/o a feul pressure gauge? Any help is super appreciated.

 

No no no, TR-6's ARE HOTTER
If your pinging now w/BR7's, DO NOT put TR-6's in
BUT DO CHANGE YOUR PLUGS

Dam I feel for you CA Brothers, 18 degrees 24/7 in NY
w/15lbs of Boost (6lb's of extra Pulley) Ultra 94 Baby.


TR5's=Stock temp range
TR-6's= 1 step colder than stock
BR-7's= 2 steps colder than stock

Denso IT-22's would be equal to the BR-7's,
thats my plug of choice. (.038-.040)

Of what the other CA Lightning owners say and run, I'd say
6lbs in CA is extremly hard to tune too, unless you raise your octane. I can tell you from 2 years of test and tuning my Beast w/ 10 Chip Programs, that mine still runs faster with 4lbs
of extra pulley than it does 6.
(YOU MAY WANNA BACK DOWN 2 LBS)
I bet you if you go to 4lbs, put a little timing back in it,
you'll be faster and ping free than anywhere you've been YET.

 

Check your fuel pressure. Your high/low relay could be bad and not kicking on the second pump. It should be 35 at idle and 55 at WOT.

Justin@JDM

 

Im running the JDM J69 program and mine does detonate in temps as high as the low 80's. It's an agressive program, but I like it that way. The cooler it gets the more likely it will detonate. Im not willing to get a reburn to take some timing out, so I keep Toluene in my tank and it stops the detonation. Mix it 3:1(For every three gallons of gas, mix in one gallon of Toluene to make 100 octane.) If all else fails, this will work for you. Just be sure to mix it with the highest octane gas available in your area. Also mix in 2 oz. of Marvel Mystery oil per tank, the Toluene is pretty dry.
I also keep the JDM J49 chip around just in case I have to run less timing.
You can get Toluene or Xylene at your local Sherwin Williams paint store. If you go with the Xylene, you MUST mix in the Marvel Mystery oil, while it has a little higher octane rating, its very dry and you need the Mystery oil for lubrication.

Hope this helps you out!

 

Try methanol injection

 

Did it show 20 degrees on a scan tool while you were dynoing, or did Byron say the file had 20 degrees? You definitely didn't have 20 degrees programmed on that last reburn I just sent. Our normal street programs have 16 degrees at WOT, and the CA programs usually get dropped down to about 13 (unless requested otherwise). If you have a race program, then that would have 20, but of course that's for race octane. Justin made a good suggestion, put a fuel pressure gauge on there and check the high side of the fuel system to make sure it's kicking on. You might also want to pull the blower and intercooler, and clean out any oil that may be in the lower intake that might have accumulated before you put your oil seperator on, as oil promotoes detonation. You can also do a quick test, of putting some quality octane booster in the gas, and see if the pinging goes away. If it does, it could just be an indication that your truck just doesn't want to make that power on the 91 octane. Let me know how you make out, and if there is anything I can do to help.

 

Check for oil in the intake. Oil will cause pinging every time. If that is the problem get a oil kit (Swanson). Maybe you should call Danny as he tunes a boatload of Lightnings here in the Southern California area and as far as I know no one has any issues with pinging. Do not let it ping as it WILL cost you a motor. Skip

 

We were looking at the timing table when byron plugged the chip into his laptop with the chipmaster program. He said that both programs were set to 20* of timing at full load.

He also said there was something wrong with the wiring in the chip. He had to cut down the wires because he said they were picking up interference which caused the truck to die about 12 times every time i tried to go WOT.

About the fuel pressure, i dont have an actual fuel pressure gauge but i found out that if you hold the odometer reset button down while you start the truck it goes into this whole crazy mode thats shows your digital speedo, tac and a lot of other crazy stuff; it also says feul, but i dont know if that is fuel pressure. I suggest you guys try it, it's pretty interesting

 

If my truck just doesnt want to make power on 91 what can i do, that is the best gas i can get aroung here??

 

What Justin Says.
I had a similar problem a year and a half ago. Fuel delivery was the problem.

 

My 02 True Blue I had would ping like a bastage to. The Ford dealer sold me some VP Raceing fluid Octaine Boost, and it cured it. I tried other Octaine boosts and you just as well of put that money of the other brands in to gas.

Pat/Bluelightning

 

TTT

 

This is why I still read and love this web page. Great job with all the help Guys. No BS, just good help!!!
Alvin