Quote:
Originally Posted by CSG Mike
18G
Specifically a GReddy T518Z
The FMIC doesn't cause any boost drop; the Garrett FMIC actually increased flow.
The turbo has a giant hot side, with a relatively small cold side. Your picture above isn't too far off from the actual size of the cold side.
I think most folks have a good idea of the size of the OEM throttle body diameter. Use that as a frame of reference compared to the turbo. In particular, look at the outlet size of the turbo. It's smaller than the outlet of a Rotrex C30-94. https://www.instagram.com/p/BbYKuqwhwzB/ |
Ok, maybe I read the post wrong. It sounded like you were saying the turbo hits a boost limit under the threshold of your wastegate, so the wastegate is always essentially closed. It sounded like you were saying the turbo was such a small compressor it couldn’t flow enough air to hit higher boost levels. I assumed you modified a turbo with a restrictor plate or changed the compressor wheel or housing. The 18G can hit much higher boost levels than that, and so do smaller turbos.