i live in Boise ID and im getting ready to turbo my d15b. trying to figure out what fmu to run. im at about 43oo ft sea level and cant get a straight answer to which ratio to run. either 12/1 or 10/1. im gona be running about 6-7psi of boost with an msd inline fuel pump and turboxs mbc. 2.50" exhaust with no cat on a 14b turbo, what do you guys think?

 

the only reason you would change the ratio is if your changing your injectors to bigger ones. With stock injectors u want to use a 12:1 ratio.

 

12:1