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Originally Posted by sleestack
Turbine wheels and exhaust system diameters can also affect your backpressure reading, but to stay on topic I will address turbine wheels and pipes later on. For the most part, turbine wheels being part of the CHRA, are not easily changed by the average do-it-yourself tuner. For now, just know that if you upgrade your housing and your backpressure reading doesn’t come down where it should, your problem might be your turbine wheel. If this is the case or if larger turbine housings are not available you might consider a complete turbo change.
Stay tuned…   |
So how much of an effect does a larger turbine wheel make on backpressure within the same a/r turbine? Say going from a stage 5 wheel to a p-trim a .63 a/r t3 turbine, would that make as big of difference in backpressure as going to a bigger a/r?