Like many others on here I am new to the HP Tuning, however I am very mechanically inclined(Engineer) and familiar with terminology. I just recently installed a 06 LS2 from a GTO into my 05 Lexus IS300. Problem I'm having is at idle the car is surging kinda bad and the throttle seems to be hanging quite a bit. I made quite a bit of changes but none seem to have fixed my issue. I do not have a wideband yet but it's on order. Also, I have not driven the car either because I'm trying to get this problem fixed. I would appreciate any advice from anyone that wouldn't mind helping out. I have attached a copy of my current tune and a log from it just idling. The only modifications are BTR3 cam (Specs: 231/244 .630"/.615" 112.5+2.5) and Long tubes with no cats and Spintech 9000s, also just a regular cold air intake and I'm running a return style fuel system with the Corvette Filter/Regulator. Once again, any input would be much appreciated.
Jacobs LS2 IS300 Current.hpt
First Startup.hpl