KwP1169 said:
Sorry I'm new here. I was just wondering which turbochargers actually fit in the Mazda3. Looking on ebay here and they have like Honda and Mitsubishi ones, and im not sure as to which ones fit.
A turbo is only a mechanical airpump, driven by exhaust gases, so it's all a balancing act.
Corky Bells book is a good place to start.
Most anything you can buy will fit, with a big enough hammer.
Sizing is the key, and the subject of about a dozen books.
For up to 3 liters....a Garrett GT28, or smaller 25 gives quick spool up, or even an IHI/Mitsu design, all have little lag....good to about 3275hp.
If you want to make more power a T3/4 would be the trick but expect a lot more lag.
The hardest part is the rest...downpipe, Intercooler, plumbing, oil lines, coolant lines....that's the issue, along with proper fueling and engine management.
The idea sounds simple, the reality is a bit of serious work and commitment.