Importance of flow restrictions on turbocharged car
#1
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I figure I'm probably not alone in having the following:
-2" ID compressor outlet
-2-3" throttle ID
-3" ID intercooler end tanks
-2" ID tubing except where the tubing hits the intercooler and throttle, obviously
I realize that this is all bad and I should feel bad, but realistically, what is the solution in a world where there are very few decent sized intercoolers with 2" end tanks and very few miata-sized turbos with > 2" compressor outlets? I figured that the airflow through the end tanks was turbulent as **** anyway so that making them drop to 2" instead of 3" wasn't that big a deal.
The rest of my pipes have reasonably smooth curves.
Am I obsessing over nothing?
-2" ID compressor outlet
-2-3" throttle ID
-3" ID intercooler end tanks
-2" ID tubing except where the tubing hits the intercooler and throttle, obviously
I realize that this is all bad and I should feel bad, but realistically, what is the solution in a world where there are very few decent sized intercoolers with 2" end tanks and very few miata-sized turbos with > 2" compressor outlets? I figured that the airflow through the end tanks was turbulent as **** anyway so that making them drop to 2" instead of 3" wasn't that big a deal.
The rest of my pipes have reasonably smooth curves.
Am I obsessing over nothing?
#3
Boost Pope
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Unless #racecar, mismatches in tubing size are pretty much a fact of life.
Ideally, we'd all have a manifold which made a perfectly smooth transition from the compressor outler directly to the intake ports with nothing in between, using direct methanol injection to control knock and variable intake valve lift & timing in lieu of a throttle.
But since this is the real world, we just deal with it.
Ideally, we'd all have a manifold which made a perfectly smooth transition from the compressor outler directly to the intake ports with nothing in between, using direct methanol injection to control knock and variable intake valve lift & timing in lieu of a throttle.
But since this is the real world, we just deal with it.
![](https://www.miataturbo.net/attachments/engine-performance-56/152466-importance-flow-restrictions-turbocharged-car-80-funny_gifs_deal_with_it_754d8511f701c4a1030c8428247cd44dc0975c47.gif?dateline=1444766040)
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