Originally Posted by
psi_R170
ok, but if it was running lean, wouldnt the ecu adjust to that and fix the air/fuel ratio????
Possibly...Im not sure of the range the stock ECU has. Some cars can cope with a lot more air, some cant. Best bet would be to find some Mercedes folks who can tell you for sure. With the cost of parts, esp a whole engine for your car, Id be sure of whatever you do before you do it.