KERMA Performance FAQ (ECU Tuning)
This applies to someone wanting to get a little more out of a stock car. If you're looking for more, talk to me, we'll get a hardware and software combination laid out.
Q: What gains can I expect?
A: It depends many factors for hard numbers. WHP is the first thing that comes to mind. For a software only mod, all else stock, for the PD, >/= 2004 125ish. for the ALH, AHU, or 1Z, <2004, 105ish. Most importantly, you'll feel it. Greater gains can be had for all motors by upgrading the notoriously barely-adequate clutches found on most models.
Q: What about drivability?
A: A Kerma tune feels very stock at light throttle, although there will be slightly more power. Roll onto it harder, and the driver experiences dramatically increased power and torque as well as an extended usable power band.
Q: How will a tune influence fuel economy?
A: Under the same driving conditions, (acceleration and cruising speed) the car will use about 5-10% less fuel. This is the result of optimizing timing, fueling, and boost maps. The engine is simply running more efficiently.
Q: Will I still pass emissions?
A: Yes. The Front Range counties' emissions tests measure opacity (visible soot) only. All tunes are written while taking into account your local municipality's regulations.
Q: How does the tune affect reliability?
A: The biggest areas of concern from a reliability standpoint on a lightly modified car are your turbo, clutch, and transmission. Charlie knows he's tuning your daily driver that you depend on. Turbo protection is built into the tune by preventing the turbo from running on its choke and surge limits. Furthermore, an algorithm is built into the ECU firmware which protects the turbo from high altitude overspeed situations. Transmission and clutch type are always taken into account when writing your file.
Q: What if I don't like it, or if I need an update?
A: Each tune is written from fully customizable maps. We will adjust the tune until you are satisfied. If you have hardware changes, tuning updates are free.
Q: Price?
A: $350 for an ALH (2000-2003), $450 for a PD (2004+), please contact me for 96-99.5 cars.
Q: Great! I'm sold, but is my car ready for a tune?
A: If any and all the maintenance and repair issues have been addressed, then yes! Some things I'll ask about and examine: oil and filters (air, fuel, oil) intake clogging, MAF sensor, VNT actuator adjustment, TB and associated components, any current or planned hardware mods, and alternative fuel use. Diagnosing running issues can be more difficult with aftermarket software. Starting with a perfectly running car ensures maximum tunability and reliability.