At GTM PERFORMANCE ENGINEERING, we believe in taking every step we can to ensure that our clients receive the most out of our forced induction systems. Offering a complete solution is paramount to maximizing the reliability and health of the forced induction systems that we offer. Not only do we offer the best systems on the market, but all supporting modifications necessary to protect our customers’ investment. below is a list of all the support mod that we offer
GTM OIL COOLERS SUPPLEMENT KITS
GTM Oil Cooler Supplement kits are offered in two different ways. One which includes a thermostat and one without. These kits are sold individually without an oil cooler. This allows you to utilize your previous investment of an existing after-market oil cooler.
GTM AUTOMATIC TRANSMISSION COOLER AND SUPPLEMENT KITS
The GTM Automatic Transmission Cooler and Supplement Kit will allow the car with the automatic transmission option to install and connect an oil cooler without any problem.
GTM COMPETITION RADIATOR WITH DUEL OIL COOLER OPTION .
It is common knowledge that the VQ37VHR has issues with oil temperatures. At GTM, we believe that this is due to the very limited cooling capacity of the coolant system. The VQ37VHR is a hot-running engine by design. Given the fact that the electronic fans do not engage until 100 degrees Celsius (212 degrees Fahrenheit), adding 100 WHP to the engine as well as an intercooler in front of the car and the results become very predictable – overwhelmed coolant system and uncontrollable oil temperatures.
Our approach to this problem is little different. Instead of solely utilizing oil coolers to help alleviate oil temperature issues, we recognized the additional need to increase the cooling system capacity and installed a massive radiator. The factory radiator, which is less than 22mm, is wholly insufficient. In this case, we opted for a 70mm radiator with a much better fan shroud. To take full advantage of the larger radiator, we inserted a heat-exchanger in the return (cold) side. This helps stabilize the oil temperatures by substantially lowering the coolant temperatures. When used in conjunction with the GTM air-to-air oil cooler, a much cooler running engine is noted.
Water/meth injection
This is a great recommendation sense Water/ Meth injection offers some great advantages in any force inductions system, from cooling the air charge to increasing the octane rating. So we are offering 2 different system to complement the stage 2 supercharger system, both system are a complete plug and play systems with two different operating capacities.
One system by Snow performance, very straight forward to install and works off a simple boost input to inject the right amount of mix into the system and another system that is a Little more sophisticated by aquamist that utilities not only boost reference but also IDC (injector duty cycle) input, This system is great for direct port system or injecting before and after the super charger head unit .
Forced Induction and Automatic Transmissions
One of the most common questions regarding aftermarket forced induction and an automatic transmission is: Can they work together? It is not a simple answer as the end user often doesn’t understand the intricacies of the automatic transmission and how the increased power from a forced induction system affects the internals of the transmission.
Lets first start with understanding how an automatic transmission works. The transmission uses a series of clutch packs to engage and disengage each gear. Unlike a manual, each gear has its own set of clutch packs. An automatic transmission uses fluid and solenoids inside the valve body to direct hydraulic pressure to the appropriate piston to engage a clutch pack to engage a gear. It is important to
note that automatic transmissions require special fluids with specific properties such as viscosity to move through the intricate components of the transmission. To learn more about how an automatic transmission works visit the following website for a play by play on how it works:
http://auto.howstuffworks.com/automa...ansmission.htm
When power is increased beyond the safety factor the OEM uses, the intricate components are affected in multiple ways. First, increased power results in additional friction and viscous shear thus increasing the temperature of the transmission fluid. When the fluid is heated beyond the optimal temperature, the viscosity (fluid’s resistance to flow) is reduced. This reduction in viscosity prevents the transmission
from operating correctly. In addition, the higher temperatures cause the fluid to degrade and break down into smaller molecules further reducing the viscosity. It is important to note that the fluid not only serves to operate the clutch packs, but lubricates the gears and other moving parts as well. Therefore, adding additional power requires a heavy duty transmission cooler to keep the fluid at its optimal operating temperature.
Generally, when an OEM designs a transmission, they have a specific torque capacity in mind and use this capacity to specify the number of clutch disks used in each clutch pack. The valve body is also programmed to operate these clutch packs in a specified manner. For example, when cruising in 5th gear on a 5 speed automatic, the transmission will only downshift to 4th gear when a certain amount of
pedal pressure is applied for a certain amount of time. Because 5th gear is used mainly for cruising, there are less clutches in the clutch pack and therefore, the ultimate holding capacity is less than that of the lower gears that are used more for accelerating. In the case of a 7 speed automatic, both 6th and 7th use fewer clutch packs with 5th being a transition gear still using fewer clutches than 1st – 4th. When
more power is added, more load is placed on these clutch packs. One way to prevent premature wear of the clutch packs is to modify the valve body to increase hydraulic pressure so that the transmission will downshift more readily. A modified valve body also shifts faster and slips the clutches less to achieve a firmer feeling when the transmission shifts. This keeps the transmission in lower gears when
you are trying to accelerate the car with more torque. On the new 7 speed automatic, line pressure can be increased by reflashing the ECU. When going for serious power, however, increased line pressure simply isn’t enough.
Even with a heavy duty transmission fluid cooler and valve body upgrade, more than doubling the factory rated horsepower requires more extensive work to keep the transmission working well. In this case, it is necessary to overhaul the transmission and replace the clutch packs, pistons that actuate the clutches and drums that hold the clutches with high performance versions. The drums must be enlarged to accommodate additional clutches and a more aggressive friction material must be selected for the clutches themselves. In addition, the piston diameters are increased to apply additional force to the clutch packs. While these modifications increase the holding capacity of the transmission, it is not indestructible as there is only so much room for additional clutch packs, larger drums and pistons.
Ultimately, care must be used when driving a vehicle equipped with an automatic transmission and aftermarket forced induction. When accelerating in a high gear, damage can result with the additional torque. Therefore, it is vital that the driver is aware of the limitations of the transmission and downshift when they want to accelerate. High speed runs at full boost in high gears is inadvisable with an automatic transmission, modified or otherwise. Remember that the transmission was not designed for those operating parameters.
This doesn’t mean that forced induction cannot be added to an automatic transmission equipped car,just that care and caution must be exercised in addition to supporting modifications appropriate to the power level achieved.
Having said that,From the beginning of the year we have been working very hard on completing our 7-AT trans upgrade solution. And we are very proud to announce that it is done, In summary we were able to offer different levels of improvement on the 7-AT trans in every gear, from 20 % torque capacity increase and all the way to 50%. stay tuned for a complete press release .
Here are the pics of all the new improved parts .