When I bought the car it was constantly overheating. I installed a Saab 900 radiator, and installed a new pair of 10" cooling fans.
Ran great after that.
Bought the car with brand new suspension. The XR4Ti corners almost as well as the Subaru Impreza WRX (which I have also driven)... and this is only rear wheel drive!!!
The first time I got in the car I stayed off the throttle through 1st gear. When I shifted into 2nd I floored it, and it seemed to go no where. When the RPM stared to climb it really sunk me back in my seat.
The 0-60 isn't the most impressive, but it is the 40-80 that will get you. This is a real Integra killer.
What you describe is known as "turbo lag". Engine designers have over-come this in the past 10-15 years.
There is a device for the xr that will reduce the turbo lag. You can also find out more details about your car from the various on line Merkur owner groups. merkurclub. com & merkursport. com also parts at opmd.com.