How to Select a Tuner for your CT4-V Blackwing
Tuning: CT4-V Blackwing
It depends on the dealership and how the tuning was performed. With our current DCM product, it may be removed in just a few minutes, leaving no trace. However, it’s always prudent to assume that any future powertrain repairs after your modifying your vehicle will be out of pocket expenses.
It’s impossible to tune the computers on these newer vehicles with Global B security. So we have the Delta Control Module, which allows us to tune your car electronically. This module plugs into between several of your engine sensors and the ECM. The sensor signals are intercepted, modified and then passed along to the ECM. This is how we’re able to convince the ECM to command more boost, which results in increased power.
It depends on how much boost you are targeting and how high of ethanol content you would like to run. The low pressure side of the Blackwing fuel system is substantially stronger than the ATS-V fuel system and can technically handle ethanol fuel blends without issue. However, you will need to add a fuel cam to boost the high pressure fuel system capacity. You’ll also need an alcohol content sensor and electronic device to convert the frequency output into an analog voltage. Finally, you’ll need one of our Delta Control Modules and custom tuning, in order to have boost, fueling and timing optimized by ethanol content. These mods will be released in the near future as part of our Purple Belt Performance Package.
ATS-Vs are tuned via direct access to more than 2,500 calibration tables within the ECM. This gives us complete control over all aspects of tuning. It’s impossible to tune the computers on newer vehicles with Global B security like the CT4-V Blackwing. So the only choice we have is to use external electronics to intercept and modify sensor signals. This allows us to turn up the boost to some degree. However, we are still limited by the ECM in many regards. For example, we cannot increase the rev limiters, edit torque limits, alter fuel injection timing, adjust variable valve timing or disable DTCs. These tuning limitations in turn exclude certain aftermarket modifications, such aftermarket camshafts.
Due to Global B, we have far less tuning ability in the ECM. For example, we cannot increase the rev limiters, edit torque limits, alter fuel injection timing, adjust variable valve timing or disable DTCs. We are also unable to access the TCM to permit second gear starts, edit shift points, etc.
Engine: CT4-V Blackwing
Accordion On LF4 engines, the right/passenger side bank is the farthest forward. That's what makes the right side of the engine 'bank 1'. The right front cylinder, closest to the coolant bottle, is cylinder one (1). On the right/passenger side, the cylinders are numbered 1-3-5, from front to rear. On the left/driver side they are numbered 2-4-6.Sample Description
We run any brand of 5W30 synthetic for all 'normal' street cars. In hotter climates like Florida, Texas and southern California we recommend 5W40. Above 700 whp, we recommend 5W50 racing oil with lots of zinc.
Stock LF4 spark plugs are AC Delco 41-147, 12662396, iridium, gapped between .030 and .035″. Most people tuned for higher boost are running one or two heat ranges colder than stock, gapped a little tighter. We recommend Brisk Silver Racing Plugs that come pre-gapped. When you replace the spark plugs, always apply dielectric grease (included with our Brisk plugs) on the inside of the coil pack connector boots. This will displace the air and prevent carbon tracking. Recommended torque value when installing in aluminum cylinder heads is 8 to 14 foot-pounds. You can buy them here.
The OEM LF4 turbochargers are Mitsubishi TD04L6 models with 20TK3S compressor wheel. These units can effectively support 275 to 350 crankshaft horsepower per turbo, which works out to approximately 640 whp on the dyno. They just can’t move more air than that, so realistically there’s no more power to be made.
CT4-V Blackwings use the E99 ECM with Global B security.
General: CT4-V Blackwing
140 foot-pounds or 190 Nm
White Belt Performance Package includes an electronics module that plugs into your sensors under the hood, plus a dongle that plugs into the OBD2 port under your dash, and high performance air filters. Blue Belt Performance Package includes the same items as White Belt, plus ported throttle body, spark plugs and throttle body. Purple Belt will include fuel system modifications to support ethanol fuel blend. Brown Belt will add ARP head studs and the record setting Caddy Issues modified turbochargers.
If you have run your car in the eighth mile and want to know how it will perform in the quarter mile, simply multiply your time by 1.555. All the ATS-V time slips we have data for show a ratio between 1.530 and 1.560. Ratios on the lower end of that range normally indicate a front half problem such as starting line traction or a missed 1-2 or 2-3 shift in the case of a manual transmission. Ratios on the upper end of that range tend to imply a back half problem such as knock retard, boost drop-off or a missed 3-4 shift in the case on an M6 car.
The factory rates these cars at 3.9 seconds with the A10 transmission, and one tuner has claimed a 2.9 second 0 to 60 mph time. The laws of physics tell us that it takes approximately 260 more horsepower to improve the 0 to 60 mph time of a 3,800 pound car from 3.9 to 2.9 seconds. Maybe they did the 0 to 60 time on their dyno. Maybe it was Photoshopped. In either case, this is deceptive to customers and a disservice to the community.