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Originally Posted by Bristecom
Hey, how does the turbo lag feel on the IV compared to an X. The IV has the smallest twin-scroll turbo mitsubishi has ever used on it. Does it pick up at 2-3k rpm or does it still feel a bit weak down low?
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Definitely weak down low, even before the crankwalk. Decent boost builds around 3k, with the ZOMGFAST! level @ 4k-5k. I rarely take my car over 5k because I'm worried about the engine blowing up. It's been like this since two weeks after I bought it; the previous owner had the Blitz DSBC set at 80% over stock boost on a stock Evo IV ECU and engine.
I've been doing damage control ever since. My new engine, hopefully installed within the month, has an Evo VI turbo and with proper tuning (my 1st mod was a USDM Evo VIII ECU) should see 350whp. Here in Okinawa I spend most of my time in urban commuter traffic though, which is why I eventually want a nice low-end torque 2.3L build.
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Also, I'm worried I may have recently developed crankwalk on my Eclipse. It's been making a knocking sound/feeling especially when I set off. 
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If your engine sounds like an impact gun but with a deeper note, especially after wailing on it and then backing down to idle.....pretty good chance it's crankwalk. Time for a 4G64 build!
The good news is that the 4G63 is practically indestructible so you can take your time. My engine has been screwed up for 10 months, and I've done some hard driving in that time, including a few late-night hill climbs/time attack runs at full boost practically the whole way. The car still functions....somehow.