Turbo or Supercharger ?

iBenJAMM1N

So I switched from supercharger to turbo was a night and day difference. Yes I ended up wanting 10 psi on the turbo but the whole powerband was a lot different, by 4K rpm I was hitting 10psi vs 8 psi @ redline in my vortech. Yes I know it's not a root style supercharger but here's another example. Same car, bigger injectors and pump.

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2015 NISMO

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iBenJAMM1N

I will tell you, I will never go supercharger again unless it's a V8. But again, I'm officially a turbo fan!

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TopgunZ

I think one thing to note is that torque does not fall off on a supercharger like it does a turbo car and that is why my sc feels like it just continues to pull while the turbo felt to me like it was slowing down.

Jwick lost 90tq from peak to redline, Ben lost 86tq, and Andrew (the guy with the blue line on my graph, up here at altitude) lost 128tq. where as my SC setup (at altitude) only lost 27tq.

If you were to describe this to someone it really comes down to how you want the car to react. If you want to wait a bit for your spool and then have it slap you in the face while breaking tires loose all over the place then a turbo is for you. If you want very linear controlled climbing of power then a SC is for you.

After having all 3 styles of forced induction on my cars within the last 5 years I have a good feel for what feel I like. But, I guess you could consider there to be 4 types. Positive displacement SC, Centrifugal SC, Big single turbo or twin turbos. I have never had twin turbos on a car that I own so that might be something I am unable to compare it to.

I will say that it is much easier to get big power out of a turbo though. Everything has its benefits and weaknesses.

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TopgunZ

Yes, unless your prepared to buy a new motor tomorrow or two years from now.

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jwick

I disagree with several things here but I think we would need to have a further discussion on the topic over alcohol.

Ultimately the TQ numbers from both of your dynos are the same. The benefit to the turbo is that you get that immediate TQ, assuming your above boost threshold, when needed and the HP up top works out the same.

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'10 G37T 6MT Graphite/Graphite - BP - G37T Build

iBenJAMM1N

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2015 NISMO

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TopgunZ

Fair enough. We have some amazing hometown IPA's up here. Let me know when your in the area.

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jwick

Sign me up for Breckenridge Bourbon

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'10 G37T 6MT Graphite/Graphite - BP - G37T Build

EVOHUNTER

Way off topic, but you guys have to try the Wiser's Red Letter whiskey.
not cheap, but my god is it good!

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TopgunZ

Were talking which is better, turbo or supercharger for a $30,000 sports car. I hope we can afford it..lol.

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NitroZ

I could not agree more. DBW completely de-tunes what is otherwise a pretty damn good motor. I cannot even use it in bumper to bumper traffic so I turn it off. I have a 09 touring, DNS catback, Cold air kit tubes isolated with K and N's, GearBoxx OB port reprogram and dual laser plugs, big deal other than the price, and run VP Fuels Octanium Octane Booster. If the weather is 40 to 50 degrees. this thing has a big spine. No not like a turbo but easy victory taking down a WRX STI.