Can I use the primary fuel rail off of an S5 NA in place of the stock S4 primary fuel rail? I mocked it up and it looks like it would fit. I would like to eliminate the faulty PD on the S4 rail without using a banjo bolt. Thanks.

 

It's a matter of clearing the UIM when bolted down. I compared the two at one time, and they seemed to be around the same overall height. The S5 NA UIM comes down very low, so it should be fine with turbo manifolds.

 

make sure you connect it the right way, as the pulsation dampener will be reversed. So, make sure you connect the secondary rail up correctly to the primary rail

 

Good point 2lucky2tha7. I searched for any info on this and didn't find anything. It seems like too easy of a fix for the problem to me. Anyone else done this or see why it wouldn't work?

 

Anyone see why this wouldn't work?