what diameter fuel line or AN fittings are you guys using for 350hp?

 

I'm making 450hp with my B20V/GTX3076R Si and Im running -8/-6 lines.

 

Stock is more than plenty for 350. Lots of people running in the 500-600 range with stock lines.

 

Stock is MORE than adequate.

 

Stock for 530whp here

 

Stock fuel rail and lines will def handle upwards of 500 for sure with just a pump and injectors. The only reason I have steel AN lines is because I'm still running a 10 gallon cell in the spare tire well of the trunk with my pump and pickup/returns all ran through there and the stock tank, lines and fuel rail were all donated to a buddies swap project. I have definately seen numerous people using stock B series fuel rails and lines for about as much power as the stock ignition is good for. Seems like everything stock will support up to Atleast the 500 mark, Honda definately engineers some good products.

 

At your power level the only reason to move to AN fittings is really for appearances...

Granted if you run new lines from the tank to the motor you can eliminate the aged OEM lines and eliminate a potential failure point like debris hitting a rubber line and puncturing or cutting it. AN lines are much stronger in that regard.

Also if it's a situation where ease and speed of removal/replacement of lines, such as a track car, then AN fittings also have the advantage over rubber lines. I mean how many of us have damaged a rubber line because it gets stuck on a fitting lol

 

stock lines to filter, -6 to rail and i make 500 whp

 

Stock from tank and back.