Last night, I took care of a few more "spring cleaning" items and also cut off some rusty chrome exhaust tips. The exhaust pipes were solid down to about the final 3 or 4 inches, where moisture had trapped over the decades where the old tips were bolted on, and the screws attaching the exhaust tips were practically rust-welded on by this point. Cutting off the ends of the pipes using a hacksaw while lying on my back under the car was a bit of a pain, but I got the new tips bolted on...just simple straight slant-cut tips. The new tips don't stick out as much as the old ones did, due to the shortened pipes, which I actually like...more of a stealthy look. I'm not too concerned about the new ones rusting because eventually the exhaust will be all re-done. No point getting too spendy.
I replaced the PCV valve and fuel filter and took the car for the first real test-drive since doing all the intake mods, AXiS interface & chip, and wow...what a difference. It really woke up! I can't remember the last time it chirped the tires from a brakestand, though it always chirped when going into third. I did a minor brakestand, not even building up much boost, and when I gunned it, it broke loose for a good 2 seconds...I actually got off the gas, I was so surprised. Nice!
Next, I need to set IAC and TPS; I wanted to wrap that up last night after the engine warmed up but it started raining so I put it off until later. IAC looks about right already, but TPS needs attention. The low was about right, around 0.43 volts, but the highest it got at WOT was only about 4.31 volts, not in the 4.55 - 4.85 volts range. BLM ranged from 126 to 138, so the low-end reading will need attention too.
Just wondering, if TPS at WOT is low, what is the effect on performance? Reduced performance at WOT, I'd imagine?