Just not true at all about needing intercooler e30, it's almost the point of an e30 tune is to max out your car without needing bolt ons. I can't say this enough, after finally upgrading my intercooler after 18 months, I saw zero additional power on e30, but it *did* let me get a stage 2 pump tune that's a little better... Despite the small import type car following, these cars don't make extra power at all with bolt ons.
Just saying guys, enjoy the e30 now but then really enjoy even pump tunes more and lower charge temps in summer with an IC upgrade...