On 2001-07-03 21:58, NetJunkie spewed forth this drivel:
Think I've settled on the Vortex intake kit and a power duct, but what about the GMS MAF? Will it make a difference with an otherwise stock Z06? I figured that's a better option than just removing the screen on the stock MAF, since this one is calibrated for it.
For G.M to meet CAFE, these C5s tend to run on the lean side. Depending on what other mods you do such as increasing the airflow and also cooler air, a modified MAF like from that vendor is hardset for 5% richer which might not be enough or your C5 might just be running close to perfect for fuel trims and going 5% richer would retard the timing and slow you down.
I strongly suggest that C5 owners take advantage of OBD II in your ability to monitor the PCM and know exactly how the engine is functioning and how any mods are doing.
This way you know for sure if a mod is a plus or minus and requires tuning, i.e for airflow / fuel trims with a MAF translator with a stock MAF with screen out and adjust the MAFT for best performance under the conditions you are driving.
I even monitor while racing and it sure tells ya what is going on and what needs tweaking.
The balance between running too lean or rich has a bearing on performance as to engine timing and knock causing timing to retard.