What Causes Pinging

[dutchie]

I have had the CAPA Edit installed last week and today get the occassional ping.

Could this be a result of bad tank of petrol??

I use Shell Optimax............that's all the car has had since I bought her new in June last year.

I also had the plugs regapped this morning to .9 mm because she was surging a bit...... and the occassional ping happened after that........only happens occassionally when I try and floor her........

Any comments?

cheers in advance.........

[jetute]

bad fuel will definately do it... try a tank of bp ultimate

whilst watching a number of cars get tuned over the weekend... I was amazed to see what a difference a diffrent tank of fuel made

[mk11tute]

Dutchie mine did the same thing as soon as I gapped the plugs .

Gona try a full tank of ultimate in mine to see the difference

[Turbo6man]

If it is pinging there is a BIG problem with your edit - ring them up pronto and tell them what it is doing. Even with sh!t fuel it should NEVER ping. Somehow the edit has stuffed up your engine control to such an extent that it can no longer operate in it's "safe" knock-sensing timing control range.

[cqae]

pinging is usually caused by lean mixtures or too much timing advance. One thing to watch is that pinging occurs before the human ear can detect it. So by all means try another fuel cos this can certainly cause it, but if it still pings, take it back to your tuner & he may have a fuel/timing map that is a little less aggressive. Good luck, I hope a fuel change fixes your problem

[thebrunks]

Throw some octane boost in it, pinging (pinking) is when there is too much air in the Air/Fuel mixture or basically the fuel mixture is not rich enough.

Too much will cause detonation (Very Bad)

The edit you have is tuned for the fuel you were using when you had the tune done. the tuner hasn't allowed for much variance in octane, which is not good.

Russ

[HUSTLER]

Even with sh!t fuel it should NEVER ping.

<{POST_SNAPBACK}>

What a load of sh*t!! Try using coles 91 ron then go use BP 98, tell me that it doesnt make a difference!!! Foolish!! I would never run sh*tty arse fuel in my car, remember to run in your car exactly what you got it edited with, if you are still having the car ping, then yes, id be takin it back b4 the ping turns into a nasty bang!!

[Turbo6man]

Even with sh!t fuel it should NEVER ping.

<{POST_SNAPBACK}>

What a load of sh*t!! Try using coles 91 ron then go use BP 98, tell me that it doesnt make a difference!!! Foolish!! I would never run sh*tty arse fuel in my car, remember to run in your car exactly what you got it edited with, if you are still having the car ping, then yes, id be takin it back b4 the ping turns into a nasty bang!!

<{POST_SNAPBACK}>

No Sh!t at all - the car will run on any fuel without pinging if it has the proper tune. Factory tuned cars DON'T EVER ping because they are tuned for the best fuel that is available (98RON) and have knock sensors that can adjust the timing on the fly to eliminate pinging within millisecs of it occuring if someone uses a lower RON fuel. If a tuner has programmed an overly agressive ignition curve/tune that falls outside the max RON fuel available in Australia he should have his balls cut off and fed to the cops.

[turbotom]

Just a couple of points to clarify.....

You have the EDIT, but is it a custom tune?

If it is, what was your power output?

If its > 250rwkw? have you increased the injector size?

One other query. You said it only happens occasionally under full throttle....

Is it when you have less fuel in the tank? (like less than 1/3 tank full)

Answer these questions, and its a lot easier to determine your problem and provide you with a solution.

cheers

tom

[jordak]

Even with sh!t fuel it should NEVER ping.

<{POST_SNAPBACK}>

What a load of sh*t!! Try using coles 91 ron then go use BP 98, tell me that it doesnt make a difference!!! Foolish!! I would never run sh*tty arse fuel in my car, remember to run in your car exactly what you got it edited with, if you are still having the car ping, then yes, id be takin it back b4 the ping turns into a nasty bang!!

<{POST_SNAPBACK}>

No Sh!t at all - the car will run on any fuel without pinging if it has the proper tune. Factory tuned cars DON'T EVER ping because they are tuned for the best fuel that is available (98RON) and have knock sensors that can adjust the timing on the fly to eliminate pinging within millisecs of it occuring if someone uses a lower RON fuel. If a tuner has programmed an overly agressive ignition curve/tune that falls outside the max RON fuel available in Australia he should have his balls cut off and fed to the cops.

<{POST_SNAPBACK}>

If that was the case there would be a number of recognised tuners getting around with squeeky voices and an adversion to wearing speedos.

I'm no expert but I dont believe that tuning the edit is exact science hence the huge variances that forum members are experiencing with their edit results.

Sure if every tuner was to aire on the wayside of cautiousness with timing on stock injectors they may well be able to avoid pinging in all circumstances I.e. ambient temps, fueltype / levels etc. however this would come at a cost re customer expectation.