FIPK, Magnapacks and PINGING!

[btolenti]

I have a 03 GT with an FIPK2 and a magnapack catback.

I currently run 87 octane, and it pings with any load on the engine.

I plan to try a tank of 89 to see if that helps, but can anyone else think of other things to check?

 

[CanadaStang]

I have a 03 GT with an FIPK2 and a magnapack catback.

I currently run 87 octane, and it pings with any load on the engine.

I plan to try a tank of 89 to see if that helps, but can anyone else think of other things to check?

Try cleaning your IAT sensor wire. Also, check all your vacuum lines for leaks[should also cause it to idle goofy, but worth a check anyway]
Faulty or plugged EGR valve will also cause pinging.

 

[C-dub]

get to a dyno and check your a/f mix. cold airs will lean you out as will the cat backs.
c-dub

 

[btolenti]

get to a dyno and check your a/f mix. cold airs will lean you out as will the cat backs.
c-dub

Anyone know of a good dyno in Sacramento or San Jose???

 

[40th GT]

Have you tried resetting the battery? Letting the computer re-learn the car might help solve the issue.

 

[CanadaStang]

Although I would doubt just the CAI and exhaust would be causing the ping, [stock EEC has a wide range of adjustability] you could try putting the stock intake back on and resetting the EEC.

 

[twogts4us]

Did you remove the MAF screen? If so, put it back and see if this resolves the issue.

 

[Stanglover96]

What about your spark plugs? Have you done a tune up recently?

 

[btolenti]

Although I would doubt just the CAI and exhaust would be causing the ping, [stock EEC has a wide range of adjustability] you could try putting the stock intake back on and resetting the EEC.

That's exactly what I thought too. I reset the EEC about two weeks ago, and I have driven over 500 miles since then....

I can't put the maf screen back on since it will not fit with the K&N CAI.

I hate to have to take off the CAI, but it sounds like I may have no other choice. I will try 89 for a tank or so and see if that helps.

Oh yeah, and the plugs were just replaced 5k ago with some autolite coppers.

 

[CanadaStang]

When did the pinging start? Do you remember if it was just after installing the CAI?

 

[CanadaStang]

It also wouldn't hurt to check if there are any leaks in the pipe after the Maf.

 

[Darkhorse845]

Yes check for leaks.

 

[Dan_Soprano]

It also wouldn't hurt to check if there are any leaks in the pipe after the Maf.

Bingo.......check to see if there is unmetered air entering the pipe after the MAF. This would cause pinging because your ECU is schedualing fuel for a certin amount of air, and if more is getting in unmetered, then it will lean you out, hence the detonation.