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Forced Induction Turbochargers and Superchargers..Got Boost?

IntensePower w/ PowerLab Single Turbo Kit Stage 1.5 GT37R / ProEFI ECU Makes 706RWHP

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Old Apr 5, 2008 | 10:12 PM
  #61  
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Originally Posted by SlideFox
You just have to think about your driving habits, and were your cars RPM's are most of the time. If your on the highway in 5th or 6th gear; you're rpm's should be right around 3000-3200 rpm.... so if you it the gas you should have instant response. The advantage, in my own opinion, is with twins you have better response in the bottom end and from a stand still.
Yea I'm way more into highway rolls then dead stops. Now I'm debating GT37R or GT35R
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Old Apr 5, 2008 | 10:24 PM
  #62  
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Originally Posted by 2004Black350z
Yea I'm way more into highway rolls then dead stops. Now I'm debating GT37R or GT35R
Well, if your not into drag racing, and want good response.... I'd go with the GT35R over the GT37R. The GT35R that comes with the kit has a .82 A/R while the GT37R is a 1.06 A/R. The 35R will give you a little better spool then the 37R. If you where drag racing your car, then I would would go the other way around. Seeings is that the GT35R is capable of 650 with the right additions to the motor, it would probably be your best choice.
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Old Apr 6, 2008 | 03:59 AM
  #63  
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Originally Posted by IIQuickSilverII
almost all the baller supras run big single turbos and the VQ with a big single outperforms the 2jz ......more displacement....better heads....
to each their own ... it all depends on the applicaion one looks...
Thats the way i see it
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Old Apr 6, 2008 | 06:04 AM
  #64  
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Originally Posted by SlideFox

(I keep reminding myself that all monster drag cars run big singles)
the faster ones run bigger twins......

you have to look at the class rules in drag racing. Alot of classes only allow "single power adders." that's why you see alot of single turbo cars.

If you go to the "top" classes, you'll see more twin turbo cars. Also, the single turbo cars running in the top classes usually get a weight break compared to those running twins.

for example, in the NMRA Pro 10.5W class, TT race cars have the largest weight penalty (100 pounds over a single turbo car.) also, the twi cars can run up to an 88mm turbo, whereas the single turbo cars can run up to a 106mm turbo.

It is very hard to truly compare twins versus singles when looking at purpose built pro drag cars. Since they have rules to follow (designed to level the playing fields), you can't make a blanket statement that big singles make more power.

Last edited by QuadCam; Apr 6, 2008 at 06:13 AM.
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Old Apr 6, 2008 | 06:11 AM
  #65  
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Originally Posted by QuadCam
the faster ones run bigger twins......

you have to look at the class rules in drag racing. Alot of classes only allow "single power adders." that's why you see alot of single turbo cars.

If you go to the "top" classes, you'll see more twin turbo cars. Also, the single turbo cars running in the top classes usually get a weight break compared to those running twins.
Your right, but I'm not looking at NHRA racing... if that's what your referring to. Titan Motorsports just broke the world record for fastst street supra in a TH400, and went 7.71 @185. They are running a big single, so is Boost Logic the current 6-spd world record holder, and WOTM the former world record holder
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Old Apr 6, 2008 | 06:30 AM
  #66  
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<object width="425" height="355"><param name="movie" value="http://www.youtube.com/v/CXa9ggyHa10&hl=en"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/CXa9ggyHa10&hl=en" type="application/x-shockwave-flash" wmode="transparent" width="425" height="355"></embed></object>
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Old Apr 6, 2008 | 05:55 PM
  #67  
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Old Apr 7, 2008 | 08:08 PM
  #68  
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Originally Posted by QuadCam
the faster ones run bigger twins......

you have to look at the class rules in drag racing. Alot of classes only allow "single power adders." that's why you see alot of single turbo cars.

If you go to the "top" classes, you'll see more twin turbo cars. Also, the single turbo cars running in the top classes usually get a weight break compared to those running twins.

for example, in the NMRA Pro 10.5W class, TT race cars have the largest weight penalty (100 pounds over a single turbo car.) also, the twi cars can run up to an 88mm turbo, whereas the single turbo cars can run up to a 106mm turbo.

It is very hard to truly compare twins versus singles when looking at purpose built pro drag cars. Since they have rules to follow (designed to level the playing fields), you can't make a blanket statement that big singles make more power.
This is NOT correct... first redundant power adders don't count twice... I.E. twin turbo is still a single power adder. The fastest cars ran singles in sport compact racing. The reason the mustangs and big motor cars run twins is because they don't really make a single turbo big enough for those engines that will still fit in the car. Single's are more efficient than twins because there is more loss around two turbine wheels than there is around one.
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Old Apr 7, 2008 | 08:28 PM
  #69  
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Doesn't it also make a difference which engine they are on? A supra has a straight 6, so a single makes sense b/c the piping is straight forward and goes directly to the turbo without having many bends. With our V6 engine we have two banks, so wouldn't twins be the most efficient way to recieve the exhaust? i.e. a y pipe connecting the two banks into a single turbo could create turbulance, reducing the speed at which the air enters the turbine?

Just a question, not sure if the theory is correct or not, but would like to know what others think.
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Old Apr 7, 2008 | 08:43 PM
  #70  
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it all depends on teh sizing of the piping....so if its properly sized dont have to worry about turbulance...

In the end, to each their own really..depending on the application, but 1ZweetZ is right: "The fastest cars ran singles in sport compact racing."
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Old Apr 7, 2008 | 09:16 PM
  #71  
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Originally Posted by tig488
the lag isnt THAT bad. its not supra lag.

at 5k youve got 400whp and your head is still being forced into the headrest. its got a little more lag than the twin kits, but it makes more power.

What tt kit has less lag and gives more power than then the pl 37r kit your talking about?
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Old Apr 8, 2008 | 10:37 AM
  #72  
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Originally Posted by 1ZweetZ
This is NOT correct... first redundant power adders don't count twice... I.E. twin turbo is still a single power adder. The fastest cars ran singles in sport compact racing. The reason the mustangs and big motor cars run twins is because they don't really make a single turbo big enough for those engines that will still fit in the car. Single's are more efficient than twins because there is more loss around two turbine wheels than there is around one.
Good points.

Originally Posted by killag35
What tt kit has less lag and gives more power than then the pl 37r kit your talking about?
Good question.

Darrrrren
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Old Apr 8, 2008 | 01:05 PM
  #73  
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Damn this 37R sounds tempting
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Old Apr 8, 2008 | 01:10 PM
  #74  
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Nice numbers, and nice lag. Cool to see a 37r on a Z, but not to much powerband to work with.
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Old Apr 8, 2008 | 01:13 PM
  #75  
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Originally Posted by FrickU
Nice numbers, and nice lag. Cool to see a 37r on a Z, but not to much powerband to work with.
Read post #57 please
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Old Apr 8, 2008 | 01:20 PM
  #76  
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Originally Posted by SlideFox
Read post #57 please
Ok.................
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Old Apr 8, 2008 | 01:23 PM
  #77  
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Originally Posted by FrickU
Ok.................
Just wanted you to read it Have a nice day
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Old Apr 8, 2008 | 01:25 PM
  #78  
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Singles are going to have lag, but I politely disagree on the not having that much usable powerband
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Old Apr 8, 2008 | 01:25 PM
  #79  
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Originally Posted by SlideFox
Just wanted you to read it Have a nice day
Ok............
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Old Apr 8, 2008 | 01:28 PM
  #80  
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Originally Posted by SlideFox
Singles are going to have lag, but I politely disagree on the not having that much usable powerband
It is hitting full boost at around 5800 and then shifting at 7500ish. In my opinion not too much but hey. But whatever floats your boat...
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