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16.5 PSI??? Help me understand this.

23482 Views 13 Replies 9 Participants Last post by  BadBoyBill
So i have a 2016 Honda Civic Touring Coupe. Now, according to this article ---http://www.caranddriver.com/reviews/2016-honda-civic-sedan-15l-turbo-test-review
IT states "Fitted with a single-scroll turbo*charger pumping up to 16.5 psi of boost..." is that true? Does my civic actually pump out 16.5 pounds of boost? Because when people ask me about my car
Person - "So i heard the new civic is turbocharged"
Me - "Yeah it is."
Person - "How many pounds of boost? probably like 5 right?"
Me - "No actually 16.5 according to an article i read"
Person - "Okay and do you believe everything thats on the internet?
Okay so of course i dont believe everything on the internet, so thats why im asking.. is it true that the 2016 honda civics are pushing 16.5 pounds of boost???
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It's definitely 16.5 psi my friend. I was surprised myself initially, but it is 16.5 psi
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Alot of people were initially shocked when honda released the psi number for the turbos... it's definitely on the high end for a compact economy car. But it's probably needed to squeeze all that torque out the it's little 1.5L engine.

Does the honda website state the psi somewhere in the tech specs you could reference that would be more reliable than an article?

edit: I checked, the honda website does state the psi at 16.5 on the official specs sheet for the civic. So you can tell doubters to shove it.
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16.5 is in the normal range for a turbo. The Fiesta ST is about the same, until you reach WOT, then it goes to 22 psi (overboost) for around 7 seconds, or until you come off the throttle.
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I'm still surprised at how much you can squeeze out of this thing. @carfun got the boost up to 23psi or something and was up to 268hp ?
Honda is known for their engines, and back in the day S2000 owners would bolt on supercharger kits, increasing HP up to 300 without changing any of the internals! Of course, the engine already had a forged crank, billet pistons, etc.
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I've seen that a few times actually ! Cannot go wrong with those.. The S2000 was just an unbelievable car, especially for it's time that it came out. Even until now, the S2000 CR is still one of the greatest track cars to buy.
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Could you add a supercharger to a turbocharged engine? I think it's supposed to be uncommon.
Yupp, compound boost or "twin-charging". That's some crazy stuff right there lol
Could you add a supercharger to a turbocharged engine? I think it's supposed to be uncommon.
I remember watching a video a few years back of this guy who did it to a Lotus it was an absolute animal!
You also have to take into consideration that it's a small engine and small turbo, so it's going to have higher psi in order to make power. The Si is pushing around 20psi.
That's also true.. then you look at bigger engines with superchargers where they only come with like 7psi of boost or something. Drastic difference

But I was looking over at the BRZ guys that install a small turbo and can push quite the amount of power on only 9psi of boost too
Post for reference: my old 2010 Hyundai Genesis Coupe 2.0T from the factory spiked 14psi if all the stars aligned in the universe and held around 8-10psi to redline, and with some adjustment of the wastegate arm 17psi before the ECU cut throttle and fuel and would hold 12psi to redline.

Looking forward to digging into my new 2017 si coupe to see what it does and can do, i'll post results as time goes by, i'm sure much has been discovered but doesn't seem many are eager beaver to poke and prod at a new car, so hopefully i can provide some insight as i just picked up the car yesterday.
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