my set up is
b16head gsr block
50 trim
with the fmu as of now

im gonna tune on crome with 560cc injectors soon in about a week or soo
should i run the bypass vavle tell i tune? cause when i drive on the hwy my mapsensor likes to act up or what should i do tell tune? this is my daily no other ride as of right now
lmk

 

just get a 3BAR map sensor, install it, remove the fmu and bypass. Don't even drive it until you get it tuned.

 

agreed

 

yes i do have 3 bar just waiting for tune

 

not to thread jack but why is it when you install a bigger map sensor you alter the timing and need a tune immediately? Does it have to do with voltage going to the larger MAP?

 

cause the map sensors dont read the same voltages. So it will throw off what part of the timing/fuel map that the car is using and at that point u may be runnning WAY too much timing/too lean an blow it up quick

 

thanks for clearing that up!

 

what about a missing like? how do they work?

 

missing link you mean?? They don't work thats playing with fire there. Get the right MAP sensor and injectors with the right EMS and get tuned. Do it right.

 

dont mean 2 buttt in on the gentalmans thread.
i have precision 450s, hondata s100 w/boost, and instead of a map im using a missing link.

 

^Doesn't mean your doing it right. your tune can be off. Since your not getting a accurate reading from the map.

 

Wat?!

You know you could have done much better with something like an MSD timing retard box - ironicly part of my current avatar... If your EMS can't sense boost, any "boost" abilities it has is just straight-up fail in a can. I hate to seem ungentleman-like, but sugar-coating the bad truth would be a dis-service to you.


FMU's are okay when you can adjust them on a dyno with a small turbo or supercharged car running low boost. If you're about to get it tuned with a "proper" EMS, bigger injectors, and a bigger MAP sensor in a week, an FMU is the most retarded thing you could do. The last turbocharged B18C1 I saw with an FMU blew the motor 100 miles later, and took the turbo with it. Oddly enough, I finagled a deal to get so I could finally have a genuine Garrett mock-up turbo complete with butt-raped turbine wheel.

 

x2

 

the s100 i have has a base map on it 2 run the 450s and 8psi. but i should not use the missing link? i should get another map sensor