imho i would take your car to r&s imports on nebraska ave, and let them adjust your valves for 75.00 dollars, then just let ne old person mess with something you dont know how to do yourself, if not adjusted right you could lose alot of money, sure the lash might go away for a day and ya give 2 items and a month later you need a new motor. lol just sell the gsr ecu for 125 and go pay to have this done right with a waranty! good luck hope this helps!