Static timing is the relationship of the crank and cams as set by the belt.
If the belt that was on before had skipped a tooth, you are reproducing the wrong static timing with the new belt. I am not saying that this is true, only that it's the first thing I would check.
The 4.6 DOHC has chains and all sprockets are keyed - different animal.
If the new belt is a different length from the original, or if anything has moved from original, the cam pulley bolts must be loosened and timing set as per instructions or the timing may be out some fraction of a tooth.
Your problem may not be the static timing, but it should be verified first if there is any doubt.
To move on, the TPS has influence over tip in enrichment, It would be a good idea to check it's operation. On occasion I have seen bad DPFE's cause too much EGR without triggering a CEL This can easily be checked by temporarily disabling the ERG valve (remove vacuum line) for a test drive. You should also check the FPR operation with a fuel pressure guage.
