I'll let you know... I just got in my 4-row and plan on running them on my stock twins. I'm running 1.2 bar right now... my friend says if there is any lag, just boost more =P
Will have some pictures of install too after it's all done!
I had a 4-Row running stock twins back in the day and Never had any Lag!!! just becuse i was running the 4-Row Car ran perfect on 100 unleaded running between 18 and 19psi........