I am having issues with my GTM twin turbo’d 07Z. This only happens rarely and now is one of those times. When im driving regardless of which gear im in and I open the throttle hard it feels like my whole car is shutting down at around 4000rpm I don’t really know how else to describe it. Has anyone had those issues or can anyone assist me. I’ve checked for vacuum lines and made sure everything is installed correctly. I’ve had this on my car for a little over three years now and I must say that is the only problem I’ve ran into. Like I stated earlier before it happens very seldom. It seems to go away on its own after a few days but I am just unsure why it is occurring and if there is a preventative measure I can take please let me know. I am not the way to experience with F/I so all of your input would be great thank you very much.

 

How often do you clean the air filter??? three years with out cleaning seems to be the issue????
although I have no idea since I have never ran into issues like that....
check out the MAFs and the TBs too is might be as simple as swapping the air filter or
cleaning the TBs, or maybe MAFs need to changed, or even a tuning issue.

start with cleaning the MAFs and replacing the air filter if that doesn't help...
take off the charge pipes and clean the TBs.
if the issue wasn't resolved then a fresh retune might be the solution.

 

you're accel map is not setup correctly most likely. What are you AFRs doing the time of no power?

 

What engine management? It could possibly be overboost fuel cut if the boost spikes. Have you noticed any pattern as to when it happens?

We are less than 100 miles away if you want to drive down and let us take a look at it.

 

dj lizard. i will most definatly try cleaning the mafs first and formost. i have changed the air filter. this car doesnt have to many miles on it i purchased new in 07 and its got 32k miles. thank you for the advice.

str8dum1 ill check that out on my next opportunity. its garaged right now but ill have it out tomorrow. its at my moms house i dont like to keep it out at my apt

hal i have the f-con vpro, i was told getting the harness to program those now that hks usa no longer exsist is a pain int he butt and that there are only a few people that have the harnesess

 

im sorry its the f-con IS piggyback. its what came with the kit when it first came out