I have been running my car with the injection pump maxed with 25-30 lbs of boost for 70,000 miles.
I keep my EGT's low and my injection timing is at .95mm.
Overly advanced timing is killer on head gaskets, rods, pistons and rings.
It's said that the IP when maxed is able to support 200-220 hp.
The bottom end and block are very stout for 2.4 liters.
I'm not sure if the stock turbo will support what the IP can, the turbine housing is fairly small.
The M46 will and can hold up as long as there is not a bunch of clutch dumps and hard shifting. My clutch and overdrive are the weak spots in my drivetrain.
It's said that the NA manifold performs better, less restrictive on the upper RPM's.
There is a bit of room for improvement on the cylinder head ports, do a good gasket match and blend in the area behind the seats.
There is no reason that the d24t/ic can't live happily with a maxed IP for 250,000 plus miles. Good oil, keep EGT's In check, let warm up before driving hard, and don't overly advance the timing.
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