Barett@27WON
Elite Sponsor
- First Name
- Barett
- Joined
- Aug 13, 2018
- Threads
- 3
- Messages
- 91
- Reaction score
- 269
- Location
- Vancouver, WA
- Vehicle(s)
- 2017 Civic SI Sedan, 2009 Mazdaspeed 3
- Thread starter
- #16
I can see your logic here, but I can also state that nearly any way to reduce pressure delta from air filter to compressor inlet will help the turbo despite the size.So, since the stock turbos are capable of a maximum cfm rate of just of 400 (each model); then, this project would apply only to "Upgraded" turbos correct.
In addition, the stock turbo(s) are not at their best efficiency when flowing that cfm - so, it is only going to compliment upgraded turbos.
At .85VE on a 1.5L engine w/VTC, how much is the RPM extended to flow the projected CFM?
Its hard to say how much the turbo inlet pipe will benefit the stock turbo, but if paired with a "race" MAF (which is just a MAF ID larger than stock) then we may start seeing gains. Peak power may not see the true gain on a stock turbo because the turbo itself is the bottle neck of the engine, but there could be solid gains with spool and mid-range.
Larger drop-in turbo's like the W1 will most certainly benefit from a turbo inlet pipe in spool, mid and top range of the engine RPM. Hard to say how much right now. Another consideration is audible performance..aka turbo whistle and BPV noises that we all love. Larger TIP and Race MAF should really increase the audible output.
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