420a turbo VORTECH FMU question.....

[99 gst 420a dsm]

i have howell bottom end and all that jazz, putting out horsepower in the low 300's, which chip should i use with the votrech fmu? 12:1, 11:1? ect ect, i need to know asap if you can help, thanx!!!!!!!!!!!

 

[siueclipse]

8:1 or a 12:1

preferably a 8:1

 

[99 gst 420a dsm]

whats the difference?

 

[siueclipse]

the difference is the fuel curve.

it all depends on how high you want your fuel pressure depending apon boost. go look at the instructios on their website and youll see the graph that im talking about.

James

 

[99 gst 420a dsm]

im running 15 psi on built internals.. does that help?

 

[siueclipse]

umm... you can't run 15lbs of boost on stock internals.. im confused on your question.

 

[99 gst 420a dsm]

Originally posted by 99 gst 420a dsm
im running 15 psi on built internals.. does that help?

im runing 15psi on howell 8.6:1 pistonds and big rods....

 

[DSM-ZERO]

What size inj. do you have now or are you going to use?

 

[99 gst 420a dsm]

im going to get the smc to run 450 or 550 dsm injectors, i herd to run the fmu and a safc

 

[siueclipse]

i personally don't think an afc is needed.. but who knows.. i haven't gotten there yet.

James

 

[Kirby]

Don't use the DSM injectors, they are not the right type. Just buy some new injectors in the bigger flavor. You can pick up accell 44lb injec. from summit for like 30 a piece I think. You might need the SAFC for fine tuning later on. You have to decide what size injectors you will use before you chose a rise rate for your FMU. I would go to www.2gnt.com and search for Corbin's fuel pages to get a better idea of what to run.

 

[99 gst 420a dsm]

well with civics, and other honda motors, alot of people use a smc and dsm injectors, its the smc that makes the injectors work right