Which would you do?

Average cost installed for super vs turbocharger?

Do they destroy your engine? Interested in potentially doing one or the Other for my Infiniti M56S.

2/5/2016 10:40:13 PM

I dunno but if I had a million dollars I'd do two forced induction methods at the same time.

2/6/2016 3:42:56 AM

In short.

a roots supercharger has instant boost and takes off like a bat out of hell but per psi of boost won't make as much power as a properly sized turbo. Screw superchargers are 2-5% more efficient and function similarly

A centrifugal supercharge makes more boost as RPM climbs, is more efficient than a roots blower and is easier to intercool but tends not to make much torque.

turbos you have to wait on but depending on how they are sized have the capability of making more HP or More torque then either above... if perfectly sized for the application they will do both.

I love turbos... mostly because the belt robs 15-25% of your total hp off the crank and the back pressure from turbos usually steals less than 5 %

2/6/2016 10:53:25 AM

don't spend money on a nissan

2/6/2016 11:12:42 AM

Supercharges will always be increasing pressure, and lowering gas mileage.
Turbos only spool when you tell them to....

I'm a turbo fan for most applications.

Ballpark cost, with no actual information is $4-6k

[Edited on February 6, 2016 at 12:00 PM. Reason : .]

2/6/2016 12:00:02 PM

are you still under warranty or do you mind losing the warranty?

2/6/2016 6:54:16 PM

Not under warranty. I think it is already 420ho and 427 lb torque, but if $4-6K would make it even faster and not kill gas mileage worse, I'd likely go for it. Have 70,000 miles on it and it is a 2011

2/6/2016 7:51:54 PM

Going to be completely honest with you. You do not want to add forced induction to a 70k mile nissan. If you want more speed/acceleration you should explore your options for new/different cars.

2/6/2016 8:42:10 PM

Sell this shit and use that money and the supercharger money and buy a not shitty car

2/6/2016 9:38:43 PM

I love my car. I think it is a luxury full size sedan that happens to also be a sports car. It is a full size 4 door car with a trunk - it fits my sons car seat. This isn't an M3, it has all the attributes I need for both a family car and a fun daily driver.

2/6/2016 9:53:09 PM

not a sports car...not even close.

I have owned both; I lean towards turbochargers.

The response is better on a SC; the efficiency and power output, all else equal, is better with a turbo.

Some engines are better suited for one setup than the other, either due to packaging constraints, or boost delivery characteristics (for a long time, the best way to force-feed an S2000 was a centrifugal SC, because the 11.x:1 CR engine couldn't handle big boost down low with the engine management available at the time)


I think $4-6k is optimistic, especially on that car. I'd say $5500-8000.



and I wouldn't even consider doing it. I'd either buy a 2nd car or a different car, instead. This would be a totally ridiculous thing to do.

[Edited on February 7, 2016 at 2:03 AM. Reason : ]

2/7/2016 2:02:38 AM

Quote :

"don't spend money on a nissan"

or at least that specific model.

like has been said, depends on the car, engine and IMHO your goals. Do you realize the effects of adding that much power to the rest of the drivetrain?

with that said are there kits out there already?

2/7/2016 7:41:07 AM

Quote :

"Do you realize the effects of adding that much power to the rest of the drivetrain? "

2/7/2016 10:06:06 AM

Stillen offers a supercharger kit for the QX 56 which is $4800.
Same engine, so I would guess that it would be a fairly simple addition to the M56. My bet would be that the hood would require a bulge or cut out though.

2/7/2016 10:54:41 AM

Quote :

"I wouldn't even consider doing it. I'd either buy a 2nd car or a different car, instead. This would be a totally ridiculous thing to do."

2/7/2016 1:40:13 PM

I already have a 4Runner as my second car. Don't have room for a 3rd

2/7/2016 1:46:37 PM

if you dont mind destroying your cars resale value, reliability, and creating a huge project for yourself go for it.

Keep that 4 runner gassed up because its gonna be your DD once you start modding the infinity.

2/7/2016 4:57:20 PM

Keep the infiniti as DD, add SC and SAS to the 4Runner

2/8/2016 2:33:02 PM

Perform a few bolton modifications and be done with it.

2/8/2016 3:24:00 PM

DO IT

if you want 500whp, more power to you

2/8/2016 6:57:30 PM

Which would I do? Depends on the purpose.

My beater will likely be turbo'd in a year or so because I want to maintain that DD MPG while still having "power on demand." Turbos are efficient at executing that goal.

Now the Vette is a play toy and MPGs aren't a concern in that car. I love low end torque and crisp throttle response, so it would likely be supercharged if it ever were to go under the knife for FI.

[Edited on February 9, 2016 at 12:32 PM. Reason : .]

2/9/2016 12:32:14 PM

[Edited on February 17, 2016 at 5:43 AM. Reason : ,]

2/17/2016 5:43:10 AM

Many vette guys i've talked to over the years would have rather gone supercharger than turbo. Turbo were nice but required perfect tuning and a lot of work and tlc. Supercharger was bolt on and ride.

2/18/2016 6:44:22 AM

Yeah but no one talks about that canned supercharger in a box tuned car because none of them make very impressive numbers.

Take the cookie cutter mod route end up with cookie cutter hp.

2/19/2016 3:49:03 PM

Personally I'd stay away from turbo's on a car thats going to see real mileage (UNLESS, you are going to buy a top of the line proven kit). One of the things people seem to overlook when it comes to this debate is that with a turbo setup you (n+1) possible points of failure.

Also torque is far more important that peak power on the street.

2/19/2016 4:13:04 PM

My take away here is the fact that were talking about a guy boosting his DD Infiniti yet doesn't know the difference between super/turbo charger.

I don't mean that in a derogatory way towards DB. I just feel like you'd be in for headache after headache

[Edited on February 19, 2016 at 5:12 PM. Reason : ~]

2/19/2016 5:08:32 PM

I also would stay away from both if you don't do your own labor.

In a year I've had my trans out the car twice and pulled the blower once, thats big money if I was paying a shop to do it.

[Edited on February 19, 2016 at 5:42 PM. Reason : .]

2/19/2016 5:41:03 PM

Quote :

" Also torque is far more important that peak power on the street."

Truth. and not Turbo Peak Torque at 4.9kRPM. I mean dat 190% low end torque.

[Edited on February 20, 2016 at 12:03 AM. Reason : .]

2/20/2016 12:03:19 AM

(Chuckle)


I'm sorry but let's get some truthiness out here. On a small engined car they are right, a 5k spooling turbo is possible.... Even on a 2.0 a turbo that peaks torque at 5,000 rpm should be able to make in excess of 600whp. But this is on a 5.6 liter 8cylinder...and that being the case 800-900hp should be possible with turbos that spool in the 3500 rpm range. These turbos should be more than enough to destroy your stock engine.

I'm going to be frank, a well setup turbo system done by a person who knows what the hell they are doing will make more horsepower, more torque and be more reliable than a supercharger at the same horsepower capability.
If you use v band clamps so you don't worry about boost leaks, if your oiling system for the turbos flows the right amount of oil without dropping oil pressure to the engine and if your tuner knows to pull timing until peak boost and then feed it back in in the correct manner to keep your engine alive.... The turbo car will give you 15% more horsepower free (free meaning with the same or less stress on the bottom end) and never... Ever.... Throw a belt, or slip a belt.

The other thing I like about turbos is you can make a Jekyll/Hyde car... Mild mannered quiet and relatively economical if you stay below boost threshold and bat shit crazy above it. Again if you size the turbo appropriately for your engine you design the power curve you want.

And anyone who bitches about the rpm that turbos come on doesn't know how to drive. If you are racing and start the race below boost threshold you either sized the turbo wrong and have no power band or would have lost the race with a super charger anyway because you started in too high of gear anyway or don't know how to launch your car.





[Edited on February 20, 2016 at 8:05 AM. Reason : Drag racing classes ballast turbo cars... Need I say more ohh and it's a 56?]

2/20/2016 7:40:19 AM