Hi everyone,
After doing some readings in few chat rooms, I still have questions...

1. I have an EST CAI and want to add an Upsolute's Chip in my car. by the way, it's a 2004 U.S. V40. With these two combined, will I damage the MAF sensor by excessively aggressive air flow through the MAF sensor? No other mod. beside the CAI so far. Anyone has this kind of combination?

2. my transmission seems hesitate to up shift and hold for a second before up shifting. When I purchased the car in new, it shifted fast and smoothly. But now, I can feel every shift with a noticeable pause whether it's up shifting or down shifting. The up shift point is higher too under non-aggressive driving. about 1000 rpm more for every shift. The car seems go slower nowadays as there's something is pulling my car from behind. I checked the color of my tranny's fluid; it's still ok although not super clean. Thanks in advance for everyone's help.

v40 blue

 

You wont damage the MAF. You will be fine.