Speed Boost on Landing
THPS1 and 2 feature an often overlooked and understated mechanic where landing tricks gives the player a boost in speed. Landing Special Tricks even further impacts the boost.
Does this suggestion exist in THPS1/THPS2?
Yes. The top speed in these games is not to be understated (look at speedruns for THPS1 that feature jumps up to the mall secret tape rail and across the ravine to the Downhill Jam secret tape). THPS2 actually gives a burst of speed even when you start a manual, allowing you to reach high speeds very easily.