Moral of the story: don’t race an E46 with 100 grand under the hood.
Any hairdresser will tell you that cooling down that hot air coming off of the blowdryer is super important. High intake temperatures mean less power and more chance of detonation. Sure, at lower boost levels (7psi and below?) you might not absolutely need an intercooler to maintain safe intake temps. But even at only a few psi, an intercooler system
There are few different ways to go when it comes to budget manifolds, but just remember that this part will see more abuse than almost any other part in the turbo system. Extreme heat cycles, vibration, and supporting the weight of the turbo are all reasons that cheap manifolds fail, sometime in just a couple of days.
One of the scariest parts of an entire turbo build, drilling a big fat hole right in the oil pan. Don’t mess it up 🙂 Okay I have more advice than that: take it slow, take your time, and please look up other guides for this procedure because there are plenty out there. I don’t do everything the “perfect” way,
This is a very common problem with eBay turbos. Since the wastegate port is so small, excess exhaust gasses are forced through the turbine wheel and raise the boost higher than intended. This is called “boost creep.” This can also be a problem if you’re trying to run a very low boost level, say 5psi, but have a free-flowing exhaust
The turbocharger purchase is one of the best ways to save money on your build. Usually the cheapest way to go about it is to find an old junkyard turbo and throw a rebuild kit at it, so this video may help you along. Sorry for the weird audio. Video Notes: -It’s best to install the metal oil seal rings