UPGRADED TURBO SETUPS
Stock Location 1 - SoCal v3 (425-440 whp)
Mods that should be considered requirements for upgraded turbos
- FMIC's (PRL or ETS)
- The stock internal wastegate won't control boost very well, so upgrading to a Turbosmart wastegate is required with this turbo. I recommend the Turbosmart 14 psi actuator along with having Reuben port the wastegate hole to prevent any boost creep issues.
- Meth injection. The cars are out of fuel on the stock turbo. If you want to make more power, you need more fuel. AEM Meth Injection v2 (VP M5 Methanol, 500cc Nozzle)(Part # 30-3300)
Stock Location 2 - FP Blue (450-500 whp)
Mods that should be considered requirements for upgraded turbos
- FMIC's (PRL or ETS)
- Meth injection. The cars are out of fuel on the stock turbo. If you want to make more power, you need more fuel. AEM Meth Injection v2 (VP M5 Methanol, 500cc Nozzle)(Part # 30-3300)
Engine Builds
You must look closely at engine ratings. IAG's stage2 block is only rated at 600 CRANK hp. That translates to 450 WHEEL hp if you use 25% drivetrain loss. Choose wisely.
Fueling Issues: Motec vs Port Injection vs Meth Injection
1 - Motec + port injection: basically $13,000 - $15,000 and is the only proper solution to the fueling issues. The Motec can control the direct and port injectors correctly. Even though this is very expensive and out of most people's budget, it is the only proper way to add extra fuel to the car. Anything else is a lesser solution and has multiple downfalls.
2 - Port injection + Split Second Controller: $6000 this option is also very expensive and has multiple downfalls. The split second controller is an auxilliary device and does not talk to the ECU. One of the main issues with this solution is that you are paying a premium to install expensive fuel injectors on the car to atomize the fuel. But the split second controller only batch fires the injectors. This means that all 4 injectors are spraying all the time in a "batch". So even when cylinders are on the wrong stroke those injectors are still spraying on top of the closed intake valve. So all that money you just paid to atomize the fuel is going to waste puddling fuel on top of the valve.
3 - Meth injection (pre-throttle): $500 - $1500 this is the cheapest solution. There are many different brands and variations of methanol injection kits with all different levels of failsafes and bells and whistles. I will not be going into those here. Meth injection has multiple downfalls. It is an auxilliary system just like the port injection and it doesn't talk to the ECU. While failsafes can be added, they are still not as good as everything being in a factory ECU or one unit like the Motec. Another issue is the meth distribution to each cylinder. We have no way of knowing how much meth is making it to each cylinder. At first the boxer design may seem like it's really bad for meth injection, but if you look at if compared to an inline 6 cylinder where the meth would be siphoned off to 5 cylinders before getting to the 6th, our center entrance throttle body and split manifold is actually no where near as bad in comparison. I do not recommend port meth as it can cause issues running extremely rich after throttle lift because port meth is batch fired just like the port injectors. I was recently made aware of this port meth kit and controller that can pulse the meth nozzles based on rpm and firing order (at least i think, only briefly looked into it). Obviously haven't had a chance to test it yet, but looks very promising. https://torqbyte.com/collections/products/products/cm5-lts-water-methanol-injection-controller
If you're going to spend the money on port injection, then spend the money on the motec to at least control it correctly.
Motec
The motec is a full stand alone ECU and is basically $13,000 - $15,000 and is the only proper solution to the fueling issues. The Motec can control the direct and port injectors correctly. Even though this is very expensive and out of most people's budget, it is the only proper way to add extra fuel to the car. Anything else is a lesser solution and has multiple downfalls.