Pinging after FIPK install! Help me out plz.

add fuel to the mid RPM fuel maps. clean your MAF with aerosol Elec. connector cleaner (radio shack).

First, the FIPK, should not be leaning it out. The MAF is more than capable of adjusting for the extra air flow, unless you have introduced a vacuum leak during the install. Check the connection at the thottle body. Sometimes while putting it on the rubber will get kinked up in a spot in the back or underneath where it is hard to see. Also check you hoses going to the PCV and IAC. You may have also gotten oil in the MAF so like others have stated clean it.

Your rear o2's would not cause the problem either since turning them off with your predator simply tells the EEC not to perform the test. They also will not prevent it from going rich after warmup. EEC uses ECT, ACT, MAF, and front o2's to detemine fuel enrichment. If it senses a hotter air charge or coolant temp, it will pull timing which is why it feels sluggish. Your best bet is to not mess with the fuel settings. If everything else is in good working order the stock tune will work great as far as fuel goes.

Well, you say you turned the rear's off, so obviously you used a tuner right? Just play around with it and richen it up a little bit.. I don't think anyone has ****ed an engine up from taking a run a little too rich once or twice. If you mess it up, just reset your tune and go back to the way you had it.. that's what hand-held tuners are for right?

Secondly, like the above post says, the rear o2 sensors only monitor the efficiency of the catalytic converters.
The front o2's are what affect the mixture.

XStanger said:

thank you for all of the replies/suggestions. I will most likely just add 1% fuel to the mid rpm range and see if that cures it.

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You can try that to see if it works, but throwing fuel at it is a band-aid that wil cover the original problem. If you have not changed fuel settings then it is more likely that you have too much timing in that range. before you add fuel do some datalogging and try to see what is going on. You should log timing, ECT, ACT, Lambda, fuel trims, tps, and o2 voltage.