What could be causing my car to not be able to reach its top speed?

So my car is a 2003 4 speed Honda Element automatic awd. I'm aware that it has the aerodynamics of a brick but that should not stop it from reaching normal top speed of what other cars Cana achieve. And the first car I owned was a 98 Altima auto that had over 155,000 miles and that car would EASILY hit 100 mph and it felt like it could've gone Much faster than that, maybe 130 mph.

Anyways, my current car is in well kept condition. It has 235/r17 16" tires. Oil has been changed. HOWEVER, it does it have a check engine light due to a faulty o2 sensor. And the air filter has not been replaced yet. Would fixing those two problems help the car achieve its top speed? I've been plenty of boxy SUV's that can achieve 110-120 mph so i don't know why mine wouldn't be able to.

Also, could this truck keep up with my old Altima if it needed to or that car would smoke what I have now? I really like this truck for how practical it is and how safe it is. It handles and feels safer at higher speeds that I used to hit in my Nissan but I wish it doesn't have trouble achieving triple digits.

How many psi can I inflated my tires up to?

I put the Yokohama Geolander HTS on my Honda Element a few months back.

On the pluses - I love the handling (more responsive in turns) and the road noise has gone down.

On the negatives - at 32 psi front and 34 psi rear, the acceleration seems to have taken a hit and my MPG have gone down about 2 mpg.

What sort of psi are those of you with this tire running? It has been a while since I considered deviating from the auto-manufacturer's psi specs, but I'm considering it here.

Yoko's specs are (I'm not even sure what this means so someone help me out) maximum load at cold tire pressure of 1709 @ 35psi. Sidewall says to not exceed 40psi to seat beads.

Could I do 38 psi on all 4 sides? Or front-36 psi, rear 38 psi?

The recommended tire pressure specs were for the stock tires that came with my element.

Could I have ****** up my car?

So I have a 1992 Honda prelude, recently it didn't want to start. I was teaching a friend of mine how to drive standard. I don't know why he would keep turning it on and let the car stall consistently until it started to move. So in simple word. He would keep stalling the car until started moving, and he could drive