I recently picked up a 1997 prelude and started acting up. After 20-40 of driving, car starts to bog and won't respond at WOT. I changed the filter, sparks and did the seafoam treatment though the intake. At first I got a egr valve code, I reset it to see if it came back, but when cel returned it was code 8 or TDC sensor. Has anyone had this problem before?