Quote:
Originally Posted by re-animator
3. 99% of dynoing is not done in a wind tunnel and instead we have an open hood and a fan. that maybe works for testing headers and exhaust or turbos but the whole point of a good intake is to maximize airflow when the car is actually moving and the hood is down. when the hood is up for example we have no idea how the intake manages heat, and even with the hood down the fans aren't going to accurately reflect the air that goes in while driving.
|
The smart folks will datalog street runs to ensure the conditions on the dyno aren't too far off. It's really not that bad imo. The most practical way to select an intake is to look at the stock one and identify the restrictions. In some cases there are restrictions and sometimes they're pretty free flowing. It's important to keep the MAF reading properly too.
Based on my observations, high specific output NA engines tend to have pretty good intake and exhaust systems from the factory.