How to read compressor maps for beginners

[TheMU47]

A simple method for reading compressor maps.

[TheMU47]

Here’s an example of a small turbo

[TheMU47]

For your calculations of engine efficiency, use this basic concept to get a decent idea of your engine VE;

Typical volumetric efficiency for a stock/street engine is 80-85%,
85-90% for mildly modded engine (like I/H/E) and 90-95% for a well built heavily modded engine (like cams, ported head - you get the idea, increases in airflow). This does not include race engines, which can achieve 100%+ (at certain rpm ranges)
Single cam 2 valve engines use the lower number, 4 valve dual cam engines use the higher number.

[siris]

Blurry pictures are blurry

[TheMU47]

They’re clear for me. *shrug*. iPhone zooms right in.

[ZombieSatty]

They are were blurry for me if i clicked view image. If i followed link to storage page, they are clear.

[TheMU47]

Fix it then. It’s pretty important to be able to read that information.

[ZombieSatty]

It works fine, nothing to fix. Need to follow link to image to view it is all. Tapatalk only shows an enlarged low res view of thumbnail, or so it seems.