I just finished my F22/DSM turbo project, however I have a question. I'm running an FMU and check valves for fuel enrichment as I don't plan to put much money into this car. I just wanted a little more power for it so I installed a DSM manifold and 14b turbo. The issue I'm having is I've put 8 check valves before my map sensor, however I'm still getting a MAP CEL under boost. To anyone else who has done these check valves, how many did you need for ~7 lbs of boost? I'm thinking I might need to switch to the missing link, but just want to know whos had success with the check valves and how many it too.

BTW if your going to post and state that I should run DSM 450s and uberdata or crome, I know what my options are and this isn't a question on what to use to run a turbo car or how to tune it.

 

I would just get a missing link, do away with the check valves. Also, might think about a MSD retard box, set it to .75 per lb of boost, and you should be golden.

 

Sounds good. It's on order. I'm going budget here, so I'll just rock the distributor instead of getting a retard box. Cheap and does almost the same thing. Who cares if I lose a little idle quality and a little low end, not me.