hi everyone, im new to this so here it goes. i looked around the forums and didnt see anything that was similar to this prob, so i started a new thread. my 97 integra gs is holding high revs when in drive, not constantly, it stops after a few min, or if i drop it into 3rd for a second. when i put it back in D its usually fine. i have light mods; cold air intake, cat back exhaust (custom from muffler shop), and a header, with plugs and wires. will someone please give help, or suggestions at leaste. thanks guys
ps...i was thinking maybe its running lean???