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Old 04-09-2012, 06:53 PM   #1
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03 Mach 1 pinging

Mods- jlt rai, bama tune, and some unknown head work (previous owner) manual car.

I'm getting a little pinging at wot. Only in the 4k+ range. I'm going to use my sct tuner to adjust the timing tonight after some data logging. Anyone else adjusted timing using a tuner before? Any recommendations as to how much I should start with?? I have not triggered any lean codes yet but is pretty easy to hear during a pull.
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Old 04-09-2012, 10:47 PM   #2
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Well, if anyone saw this the solution was to ****** 0-4000 rpm 2 degrees, 4000 - 8000 retarded 4 degrees, and added 2% added rich at Wot. Purrs like a kitten now. Feels so much better.
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Old 04-10-2012, 09:09 AM   #3
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Re: 03 Mach 1 pinging

might want to talk with bama tunes to see what they recommend as well to ensure you not only fixed it but also didnt sacrifice power if you needed need to. I had some detonation a while back that was simply bad gas~
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Old 04-10-2012, 11:07 AM   #4
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Quote:
Originally Posted by SpectorV
might want to talk with bama tunes to see what they recommend as well to ensure you not only fixed it but also didnt sacrifice power if you needed need to. I had some detonation a while back that was simply bad gas~
Gas isn't the problem. Used several different brands. I ended up dialing back in 2 degrees up top. Drives so much better. If anything I may have picked up power. On the data log wot from 3000rpm -6500rpm took almost .6 seconds less after the tweaking.
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Old 04-10-2012, 11:38 AM   #5
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Re: 03 Mach 1 pinging

keep an eye on your plugs, might be good to change them if you had much detonation just to be safe. IF you see any signs of detonation on them after a change a few miles down the road then take some more timing out. You cant always hear detonation fully it seems.
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Old 04-10-2012, 11:56 AM   #6
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Quote:
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keep an eye on your plugs, might be good to change them if you had much detonation just to be safe. IF you see any signs of detonation on them after a change a few miles down the road then take some more timing out. You cant always hear detonation fully it seems.
Agreed. I pulled a couple before tweaking and they looked new. Ill pull the same ones again this weekend just to be safe. But -2 degrees is a pretty safe change. The pinging up top under wot its gone and the engine revs so much better now.
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Old 04-10-2012, 12:29 PM   #7
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Re: 03 Mach 1 pinging

I pulled mine down to around 19 deg just to be safe as it was set at 21
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Old 04-10-2012, 03:31 PM   #8
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Quote:
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I pulled mine down to around 19 deg just to be safe as it was set at 21
Yeah, I think the tune is really a dyno monster tune I got. I may have list a few to end hp but gained through the range for sure. If its pinging, its not making max power.
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Old 04-24-2012, 02:35 PM   #9
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Re: 03 Mach 1 pinging

just saw thread... was having similar probs on my 04 gt. i did figure out (in 89p tune anyway) to pull out some timing, which i didn't really WANT to do. BUT it did help my pinging

now, have sswitched back to 87s tune. i do have bbk/stack tb/plenum combo with no exhaust mods, so figured more air and less fuel causing the prob. i am thinking about trying to increase rich on mixture, but not sure if that will help (or just help waste gas)... any thoughts/further experience

thx!
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Old 04-24-2012, 03:19 PM   #10
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Re: 03 Mach 1 pinging

check your plugs, pinging can cause damage to them, I would replace them if it pinged more than just a bit.

If its pinging at all thats BAD
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Old 04-24-2012, 03:26 PM   #11
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Re: 03 Mach 1 pinging

hey there,
just ran car again... do you know about adjusting timing and mixture a little??? she ran like bat outta hell thru gears, but climbing hill in 5th, and 4th, still pings. will tell you where i'm at setting wise if u got time to help. thx!
joe
p.s. can't pull any plugs till the weekend probably
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