ive seen some with around 165K on the original belt and that would be the scariest thing in the world for me.... im sure you've already heard millions of times the type of damage itll do if the belt breaks....

 

Test the resistance in your coil

 

I have a 94 Ls integra and kinda have the same problem, but its not quite as noticable. I think when i got my magnicore spark plug wires that helped a bit, and now im doing better ground wires.
Doubt it has anything to do with your intake or EGR, its most likely something electrical. I feel mine would be helped if i got a better alternator, cause right now my alternator sucks.
If you wanna bypass the problem, just tap your gas when taking off before you let out the clutch, assuming you have a manual. I got in the habit of that, and now i usually take off at around 2k rpms. Good luck!

 

yea that timing belt is super risky!!! mine has 170,000 and just broke last week, i'm curently replacing my motor since i can buy a used jdm with under 50,000 miles cheaper than i can rebuild with stock parts,(all labor including machining done myself) much less what it would cost to rebuild with performance parts.