Lastchance caught an article in this month's Import Tuner that featured Tadashi and the guys at Technosquare. I don't have a scanner, but I wanted to recap a few quotes that discuss some of their basic tuning concepts:

- (For those wondering about why aftermarket intakes sometimes cause power loss):"In MAFS cars...changing the OE intake for a less-restrictive aftermarket unit often means swapping the MAFS into larger diameter piping...which slows the speed of the incoming air...fooling the ECU into thinking there's less of it...in return, less fuel is injected...in some cases, the leaner AFR might actually make some additional power, but in others the increased EGT readings of newer cars' wideband O2 sensors will prompt a...change in ignition or cam timing, limiting power gains."

-(For those who wonder why aftermarket exhausts can often decrease low-end HP and torque on our cars):"...since low-rpm performance benefits from the longer combustion times of richer AFRs, backpressure (from restrictive stock exhausts) actually helps torque production in the lower rpm."

-(For those who want a custom turbo system but don't know what to do about engine management): "...the ECU could be reflashed to govern forced induction or nitrous injection systems, a full naturally aspirated build, or whatever other crazy power scheme his customer might come up with down the road...Only once the OEM sensors have passed their capacities...should the owner consider another option to reflashing."

 

cool nice find.. i really dont understand the first quote if any1 can explain...mafs,afr,egt

2nd quote is what i like to hear

 

MAFS-Mass Airflow Sensor in the intake pipe.

AFR-Air-fuel ratio.

EGT-Exhaust gas temperatures.