looking at the greddy instructions and it says that I have to grind the fuel rail, i was curious if this is because the RC injectors are higher than the stock ones?

if so, if i get the DW injectors, if grinding is still necessarry?

thanks

 

DW injectors are plug-n-play, no modifications needed

 

i wonder why it says to grind the fuel rail on the greddy instructions?

are the rc injectors larger then the dw's??

also.. what are the 440 RC good for? can they get 420whp with just a fuel warbrol fuel pump?

thanks

 

yea 420 should be within the limits of those injectors and pump.

 

yes the rc injectors are taller than the dw

 

Depends on what dyno and correction factor. On our Dyno Dynamics, no, you will not be able to achieve 420whp safely.

The DW are a straight drop in replacement for the stock injectors, no grinding necessary.

 

The taller RC injector can hit the underside of the plenum, so Greddy suggests grinding the rail down a touch on the high spots.

DW injectors drop in...no grinding or anything needed. Gotta love that.