Best and easiest route - 550 to 600 to the wheels.
#16
10-23-2009, 03:36 PM
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Join Date: Sep 2009
Location: Southern California
Posts: 780
Rep Power: 60 
not a downgrade at all. An upgrade in fact. You can see what our Stock X50 Car did in comparison to this setup...its a HUGE improvement.
Of course our Billet K24's should do even more but if you are looking for instant spool and great power and torque these are your guys!
Eric
Of course our Billet K24's should do even more but if you are looking for instant spool and great power and torque these are your guys!
Eric
#17
10-23-2009, 05:17 PM
Here are some dyno sheets from our packages.
A comparison of our K16's to a set of k24's
SPI GT28's on 93 octane on a Tiptronic, baseline is regular GT28's at low boost:
A comparison of our K16's to a set of k24's
SPI GT28's on 93 octane on a Tiptronic, baseline is regular GT28's at low boost:
Last edited by Neil Switzer; 10-23-2009 at 05:19 PM.
#18
10-23-2009, 05:35 PM
How many hp/tq those SPI GT28's on 93 octane would make on 6speed car??? what about the cost??
#19
10-23-2009, 05:44 PM
Lot of these dynos are dynojets RWHP,these are obviously going to read much higher than AWD dynos like Mustang and Dynodynamics.
A good comparision would be these different setups on the same type of dyno ...Even better are the 60-130 and trap speed #'s at similar boost levels which tell us the real story and takes away all the variances.
In this case, i like the fact that AMS backed their DYNO#'s with solid trap speed and Tx mile speeds.
A good comparision would be these different setups on the same type of dyno ...Even better are the 60-130 and trap speed #'s at similar boost levels which tell us the real story and takes away all the variances.
In this case, i like the fact that AMS backed their DYNO#'s with solid trap speed and Tx mile speeds.
#20
10-23-2009, 05:45 PM
Where does the boost come on with the 30's, where does it reach peak boost? I really want to do an upgrade, but I keep hearing that most of these turbos are all about top end.. I track my Cars and so need good boost early on in the rev range (to get me out of corners that are in the 3000 rpm range), but need that boost to hold until 6500 rpm.. My GT2 comes with stock K24's and I have been thinking of an 18G upgrade.. With all these different options, it's really hard to come to a solid conclusion on which Turbos to use and I'm getting frustrated because everyone thinks their setup is the best...
I'm hoping for an expert who has set their Car up for 550-600RWHP who regularly tracks their Car at places like Laguna, Thunderhill, Sears or similar Racetracks to chime in with a solid recommendation for which turbos will suit my car...
I'm hoping for an expert who has set their Car up for 550-600RWHP who regularly tracks their Car at places like Laguna, Thunderhill, Sears or similar Racetracks to chime in with a solid recommendation for which turbos will suit my car...
If I were you I'd really consider a couple of things.
#1 Putting 550-660 rwhp on your car for the track in a GT2. Better know what you're doing.
#2 In relation to #1 quicker spool is much better than bigger hp on the track and your K24's still won't make the power of the Billet 16's unless you mod them. K24's will not give you the boost you are looking for in the 3k rpm range.
#21
10-23-2009, 05:57 PM
Roughly around 625whp/620wtq.
The entire package:
HIGH-PERFORMANCE SWITZER EXHAUST SYSTEM
SWITZER-MODIFIED GT28 TURBOCHARGERS
IRIDIUM PERFORMANCE SPARK PLUGS
SWITZER MONSTER INTERCOOLER KIT
ELECTRONIC BOOST CONTROLLER
HIGH-FLOW FUEL INJECTORS
CUSTOM DME SOFTWARE
HIGH-FLOW AIR FILTER
SWITZER HD CLUTCH SYSTEM FOR 6-SPEED 996 TT
SWITZER MONSTER INTERCOOLER PLUMBING W/ BILLET DV
DIGITAL MAF HOUSING AND MAF CALIBRATION
SWITZER COMPETITION-STYLE HEADERS
HIGH-FLOW INTAKE PLUMBING
CUSTOM DME SOFTWARE
22990-USD
The entire package:
HIGH-PERFORMANCE SWITZER EXHAUST SYSTEM
SWITZER-MODIFIED GT28 TURBOCHARGERS
IRIDIUM PERFORMANCE SPARK PLUGS
SWITZER MONSTER INTERCOOLER KIT
ELECTRONIC BOOST CONTROLLER
HIGH-FLOW FUEL INJECTORS
CUSTOM DME SOFTWARE
HIGH-FLOW AIR FILTER
SWITZER HD CLUTCH SYSTEM FOR 6-SPEED 996 TT
SWITZER MONSTER INTERCOOLER PLUMBING W/ BILLET DV
DIGITAL MAF HOUSING AND MAF CALIBRATION
SWITZER COMPETITION-STYLE HEADERS
HIGH-FLOW INTAKE PLUMBING
CUSTOM DME SOFTWARE
22990-USD
#22
10-23-2009, 06:02 PM
Lot of these dynos are dynojets RWHP,these are obviously going to read much higher than AWD dynos like Mustang and Dynodynamics.
A good comparision would be these different setups on the same type of dyno ...Even better are the 60-130 and trap speed #'s at similar boost levels which tell us the real story and takes away all the variances.
In this case, i like the fact that AMS backed their DYNO#'s with solid trap speed and Tx mile speeds.
A good comparision would be these different setups on the same type of dyno ...Even better are the 60-130 and trap speed #'s at similar boost levels which tell us the real story and takes away all the variances.
In this case, i like the fact that AMS backed their DYNO#'s with solid trap speed and Tx mile speeds.
We have a awd DynoJet, we do however, prefer to dyno in rwd.
Dyno numbers are just numbers, like you said, real world results are what matters most.
We mainly use the dyno to tune the power curve.
Here is a video:
http://www.youtube.com/watch?v=hsE9V...eature=channel
#23
10-23-2009, 06:05 PM
If I were you I'd really consider a couple of things.
#1 Putting 550-660 rwhp on your car for the track in a GT2. Better know what you're doing.
#2 In relation to #1 quicker spool is much better than bigger hp on the track and your K24's still won't make the power of the Billet 16's unless you mod them. K24's will not give you the boost you are looking for in the 3k rpm range.
#1 Putting 550-660 rwhp on your car for the track in a GT2. Better know what you're doing.
#2 In relation to #1 quicker spool is much better than bigger hp on the track and your K24's still won't make the power of the Billet 16's unless you mod them. K24's will not give you the boost you are looking for in the 3k rpm range.
2. I agree.. Usually, the area under the curve is what works best, rather than peak HP near redline. I would be looking at K24/18G's modded from Markski or similar...
Here's how my 944 Turbo dynos looked.. The difference wasn't so much the change from 2.8 liters to 3.0 liters, it was the Turbo that really made the Car shine.. Note the big fat HP and Torque curves on the 3.0 liter Car with correctly sized turbo (it took 4 attempts to get the exact right turbo for this engine). The 3.0 liter Car made less peak HP, but was infinitely faster and more driveable on both street and track...
Last edited by 80shilling; 10-23-2009 at 06:08 PM.
#24
10-23-2009, 06:51 PM
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Join Date: Aug 2009
Location: Houston Tx
Age: 39
Posts: 2,496
Rep Power: 186
my gt28's spool very fast in cooler weather im at 1.2 bar by 3400rpms now this is me trying to watch the road and the boost guages at the same time but i cant be much off
and they dont hit a wall in the upper rpm ranges. dont pull like a monster turbo but they spool pretty damn fast.
i dont have any numbers on my car yet but evoms used to offer the gt28 kit ina 640crank horsepower guesstimate
and they dont hit a wall in the upper rpm ranges. dont pull like a monster turbo but they spool pretty damn fast.
i dont have any numbers on my car yet but evoms used to offer the gt28 kit ina 640crank horsepower guesstimate
#25
10-23-2009, 07:19 PM
my gt28's spool very fast in cooler weather im at 1.2 bar by 3400rpms now this is me trying to watch the road and the boost guages at the same time but i cant be much off
and they dont hit a wall in the upper rpm ranges. dont pull like a monster turbo but they spool pretty damn fast.
i dont have any numbers on my car yet but evoms used to offer the gt28 kit ina 640crank horsepower guesstimate
and they dont hit a wall in the upper rpm ranges. dont pull like a monster turbo but they spool pretty damn fast.
i dont have any numbers on my car yet but evoms used to offer the gt28 kit ina 640crank horsepower guesstimate
#26
10-23-2009, 07:21 PM
my gt28's spool very fast in cooler weather im at 1.2 bar by 3400rpms now this is me trying to watch the road and the boost guages at the same time but i cant be much off
and they dont hit a wall in the upper rpm ranges. dont pull like a monster turbo but they spool pretty damn fast.
i dont have any numbers on my car yet but evoms used to offer the gt28 kit ina 640crank horsepower guesstimate
and they dont hit a wall in the upper rpm ranges. dont pull like a monster turbo but they spool pretty damn fast.
i dont have any numbers on my car yet but evoms used to offer the gt28 kit ina 640crank horsepower guesstimate
Mike
#27
10-23-2009, 07:25 PM
Registered User
Join Date: Aug 2009
Location: Houston Tx
Age: 39
Posts: 2,496
Rep Power: 186
here is my list
EVOMS gt640
headers and gt28 turbos
fabspeed exhaust 100cel cats
EVO intercoolers
EVO boost hoses
EVO DV
EVO V flow intake with gt2 wing
964rs lightweight flywheel n clutch
might have missed something but off the top of my head that the bolt on stuff
EVOMS gt640
headers and gt28 turbos
fabspeed exhaust 100cel cats
EVO intercoolers
EVO boost hoses
EVO DV
EVO V flow intake with gt2 wing
964rs lightweight flywheel n clutch
might have missed something but off the top of my head that the bolt on stuff
#28
10-23-2009, 07:28 PM
You will definitely need the exhaust. K24/18g's or Alpha 28's and injectors will get you to that level quick and easy. If you think you will be happy there, that's all you need, go for it. If you think you will want to mod further in the future, go with Alpha 3071's and run lower boost for now? Intake and intercoolers are not necessary at that level, but highly recommended for improved efficiency, spool and maintained power over 6000rpm.
#29
10-23-2009, 08:29 PM
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Join Date: Feb 2004
Location: In a Canyon - Really :)
Posts: 4,880
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