Diablo Sport installed, now it pings

[silver01]

I just installed the 87 tune from the Diablo Sport and now it pings at high rpms from 1-2 2-3 for a few secs. I have a 01 4.8 with cat back exhaust, air intake, de-screen maf, and I just changed the plugs and wires. I put ngk and msd wires. It didnt have this before the tune. Can the tune be to agressive for reg. gas. I just filled up with 89 to see if it makes a diff. Any ideas. THANKS

[DamnYankee]

<div class='quotetop'>QUOTE(julio &#064; Feb 23 2007, 03&#58;08 PM) [snapback]84267[/snapback]</div>

I just installed the 87 tune from the Diablo Sport and now it pings at high rpms from 1-2 2-3 for a few secs. I have a 01 4.8 with cat back exhaust, air intake, de-screen maf, and I just changed the plugs and wires. I put ngk and msd wires. It didnt have this before the tune. Can the tune be to agressive for reg. gas. I just filled up with 89 to see if it makes a diff. Any ideas. THANKS
[/b]

Not being argumentative here, but that&#39;s one of the benefits of a tune from Nelson - he&#39;ll eliminate virtually all pinging.

Not sure what to say about your case though.

[silver01]

I understand. I thought about a custom tune but then I would be stuck to that tune. With the Diablo I have 2 stored tunes I can call them and ask for a better tune depending on engine mods (my brother did it, its awesome). And I have a code reader and data logging with the Diablo. I went ahead and changed the fuel filter right now but havent driven it yet. The truck has 100K so maybe the o2 sensors are not reading correctlly. When I took of my old spark plugs they where kinda white hardly any color to them. I have been using seafoam. Maybe cleaned the plugs and clogged the o2 sensors.

[DamnYankee]

<div class='quotetop'>QUOTE(julio &#064; Feb 23 2007, 05&#58;02 PM) [snapback]84276[/snapback]</div>

I understand. I thought about a custom tune but then I would be stuck to that tune. With the Diablo I have 2 stored tunes I can call them and ask for a better tune depending on engine mods (my brother did it, its awesome). And I have a code reader and data logging with the Diablo. I went ahead and changed the fuel filter right now but havent driven it yet. The truck has 100K so maybe the o2 sensors are not reading correctlly. When I took of my old spark plugs they where kinda white hardly any color to them. I have been using seafoam. Maybe cleaned the plugs and clogged the o2 sensors.
[/b]

Again, not being argumentative, but you&#39;re never really stuck with a custom tune. Allen gives free upgrades, so if you&#39;re planning a mod, tell him, and he&#39;ll send you a new PCM that accounts for that mod.He&#39;s done literally thousands of these and can send you a mail order one that is likely better than the Diablo.

He&#39;s a whiz at tuning, that&#39;s why virtually 100% of the guys here use his tune as opposed to any other custom tune or handheld tune.

I&#39;d personally encourage you to sell the Diablo and put the money towards one of Allen&#39;s tunes. In the meantime, there are some guys here that can give you some input on the pinging. Also, a lot of people have had trouble when they de-screen the MAF. I&#39;m sure you did research prior to doing it and felt it was worth the risk, but just saying it is likely related.

[RedHeartbeat]

You&#39;re real problem is you descreened the MAF. Big mistake if you cannot recalibrate your entire tune to compensate for it, very time consuming for a very little gain. Put the screen back in or replace the MAF and your pinging will go away.

[farmtruc]

Also run 89oct at a minimum, there&#39;s very little performance gained with 87oct.

good luck,
allen

[silver01]

Well pigning is gone. I dont know if it was a bad fuel filter or that I fill up with 89. Anyways thanks