XM Intake Manifold and s90 TB Dyno...

[NOMIEZVR4]

You can get the glass ethanol content testers for like $5 on eBay. I don't start changing fueling until I test what's in the tank.

Afr alone just doesn't impact power that much unless you get way off.

The maf should pickup any additional airflow, so im always curious when people say better flowing parts made the afr change a lot. If anything you are hitting different loads and the ecu is setup a little different there or your maf is not scaling properly.

now that you mention it although I'm running an evo maf the sensor is not the same one that I had previously..not the same physical unit. Not sure if that may affect readings. Both mafs were/are OEM stock.

I posted my fuel map and datalogs on page 2 for you to see. 2byte airflow went up but overall peak load numbers fell slightly. Not sure how much temperature will affect airflow data.