Car has case of the hiccups!!! Please help!

Hi,
I have a 92 SC with all the common mods, and recently I've noticed that when I start to go into boost there is a slight hesitation before it goes. It seems to me like the fuel pump is cutting off for a split second and then turning back on. It only happens when going into boost. Anybody else experience this? My car has 150,000 miles on it, and I don't know when/if the previous owner changed the fuel pump last. It might not even be the fuel pump for all I know. Any comments/suggestions would be welcomed.

Thanks in advance,
Steve

Spark plug wires?
Does it misfire or just loose power?

Tps?

Based upon your mods, and assuming the hickups started after your mods were working at one time: Try adjusting the TPS to read 7.5V at idle instead of 8.0V and see if that helps. Also the MAF will cause this if not reading accurately. Try cleaning it.