turbo or supercharger

[menny30]

which is better and which produces more power for the price???

[Matthew]

yes

[Chris]

Internal induction

[Matthew]

http://www.dtmpower.net/forum/forumd...?s=&forumid=51

p.s.

[mitchelrl]

http://www.aas.com.sg/features/archive/f11012.htm

read this and enlightenment you shall have!

[Scho]

---> FI

[Bad Bimr]

Originally posted by menny30
which is better and which produces more power for the price???

Which produces more power for the price?

Well both can produce more power then your stock motor can take. Both can make your motor a time-bomb.

You can get so-much power out of a stock engine. Both a SC and a Turbo can give you that power.

A turbo makes more torque but has lag. A turbo has very un-linear power delivery. No boost, no power, lag, lag, lag, full boost, full power. It is like an on and off switch with a slight delay. Very hard to control (especialy on a race track or around a corner) but real nice to "show off".

A Centrifigal SC has no lag but produces boost as RPM rises it has less TQ but a more linear power curve. This linear power curve will save you money in the long run. Why because it won't destroy the clutch, diff, tranny, motor mounts, driveshaft, etc.

Now a Positive Displacement SC. This is the "Bad Boy". Full boost at the touch of the throttle. It makes a small engine feel like a bigger engine. It is like adding displacement to your engine. Your 6 cyl will feel like a big V-8. Instant boost, linear power curve, big torque at low low low RPM. Ohh, these are the ones OEM's use in their production cars (Benz, GM, Ford) and also the ones you see at the Drag Strip in those top fuel dragsters. And yes there is a kit out for the BMW.


Bill P

[bigmansm]

Dear bill whos sc kit is for bmw and how much?
also i read the posted website and they made supercharger sound really good, although other sources say semi-badthings about them.

Is the main purpose of turbo, major hp? with a uspercharger the website linked above says you only loose 2-5hp, that sound very low, wouldn't you agree?

I am in the Fi market, but told myself to go turbo so that i can always up the boost to gain more and more power, but a supercharger is starting to tempt me

[Bad Bimr]

Originally posted by bigmansm
Dear bill whos sc kit is for bmw and how much?
also i read the posted website and they made supercharger sound really good, although other sources say semi-badthings about them.

Is the main purpose of turbo, major hp? with a uspercharger the website linked above says you only loose 2-5hp, that sound very low, wouldn't you agree?

I am in the Fi market, but told myself to go turbo so that i can always up the boost to gain more and more power, but a supercharger is starting to tempt me

It's very hard to decide. SC or Turbo. With the Centrifigal style SC you install it and forget it. It does it's job.


With a turbo you will have more low end torque but it takes time to get all the bugs out. Once they are out the turbo is good. Most people don't have nor want to take the time to get the bugs out of a system. Also the turbo ties in to the engines oil system and heats the oil up. Engine temps can run higher and under-hood temp is very high.

As for uping the boost on a turbo to make more power. You can do the same with a SC buy changing the pulley size. But a stock BMW engine with 10.5:1 comp ratio will not live long at more then 6-8 psi.

My kit is an ERT Kit designed for the OBDI 6 M50 aqnd S50 engine. It will fit later model cars with minor changes (SC to TB Pipe is diff). If you buy a SC kit stay away from RMS and ESS. Buy either Dinan or ERT.


Bill P

[menny30]

thx for the info bill, where did u buy your sc kit from??? and around how much did it cost???

[Bad Bimr]

Originally posted by menny30
thx for the info bill, where did u buy your sc kit from??? and around how much did it cost???

I bought my kit from ERT directly. They did the install and tuning using Jim C Software and DME Editor.

If memory serves me right, I paid near $6K for it when I bough it.

It is for sale, make me an offer.


Bill P

[josemg]

I'll agree with Bill in some points. the SC will looks cleaner and you don't have to mess with fuel management and so forth, but about attaching oil supply an dreturn and heat up, it always get hot. Increasing hp in your engine will heat up the oil, the water and the gas also.

One of the benefits I'll see from turbo is that you can increase your boost in your wastegate without replacing any parts. Also you can change the desired boost if you have a boost controller from the cabin. If you are planning running with stock engine (200's psi of compression), I'll think you should move a to4 easily without any lag. I think you should not cross the 8-9 psi, so the response will be fast, faster than SC.

One of the points of centrifugal SC is the noise that emits during idle time. I have a friend with a mustang sc and it sounds like an old car with blown power steering and water pump. He had a Mustang Race Car also and he said that turbo response better than Supercharger. Another one is that if you want fast response with the supercharger, you have to go full throtle all the time, instead of turbo that response from as near as 1500-200 rpm.

If you want performance go with Supercharger, if you want fast response and high power (torque) go turbo.

Jose

[Bad Bimr]

Originally posted by josemg
I One of the points of centrifugal SC is the noise that emits during idle time. I have a friend with a mustang sc and it sounds like an old car with blown power steering and water pump. He had a Mustang Race Car also and he said that turbo response better than Supercharger. Another one is that if you want fast response with the supercharger, you have to go full throtle all the time, instead of turbo that response from as near as 1500-200 rpm.
Jose

Noise, what noise? I guess your friend has on of the LOUD Vortech, Pro-Charger, etc.. SC's. Those SC's use gears and are very loud. They sound great at first when they are new (like a loud exhaust) but become a pain after a few weeks. The noise drives you crazy.

That is why I bough a Powerdyne unit, NO NOISE. Granted the Powerdyne is a "STREET" charger and not recomended for track or over 9 psi. Well I drive my car on the streeet 100% of the time. The engine will not take even take 9 psi on stock CR so why get a different SC.

Bill P

[spoon]

Not to discount what bad bmr has said, but I would go with turbo over a sc anyday. I have a t03/t04 hybrid drag kit, with all the goodies. I have around 280 at the wheels in a gsr with stock internals. I have had my turbo for about 7 monthes and have had few bugs. I could have spent 5 for a turbo and got 80 at the wheels, or 3 for 30 at the wheels. I beat v8's all day. Its true that you have lag, lag, POWER. but its awesome. I love every minute of it. And then you have that beautifull blow off sound too. im sure you know how fun that is.

[DeeDubb]

There is a BIG difference between Acura's and BMW's my friend