Lately I have been experiencing some major lag when I take off or shift. When I leave from a stop sign driving normal it feels like the car doesn't want move for a second or two then kinda starts picking up. I can take off in 1st about 1/4 throttle and at about 2k rpm I go wot and it starts to pick up but never feels like it is at full power all the way to redline. Also when I do a wot run it feels like it stutters throughout the gear in every gear. At first I thought it was the spark plugs but I changed them an still the same problem. I have a 2.8 pulley 60lb injectors, dual pass, cx heat exchanger, injen intake, catless dp and I have a stage two tune from Ottp. I have no Idea what it could be. I occasionally have about 15-20 min where it feels normal and once in a while it will pull a wot run like it should but 95% of the time it is really laggy and doesn't feel like full power all the way to redline. Oh and when it is laggy I hit 19-20 psi on my boost guage and when it is running normal it is just above 15 psi.

 

Clogged cat or bad o2?

NVM, just noticed the catless part.

 

Do you think I could be that my u2 is going bad?? I do know that I am running rich if that helps narrow down the possible problems, idk if it coul b that I am running rich I never thought about it since I have been on this tune for a year

 

I am having a similar issue...
when i took my car in i have a leak at the bolts of mt DP and exaust that i am loosing power from...

maybe check that?

 

check your exhaust lash adjusters i had 2 of them go bad and caused the exact same problem high boost with a case of slowness