A walbro should be up to the job once it a high pressure 255 not just a 255 up grade your wiring and run a feed direct from the battery and switch it using a relay walbro will flow more if it has a direct feed plus nissan wiring is cat.ray over on sxoc is running about 400bhp on e85 using a sard in tank fuel pump if walbro flow sheet is correct it is a better pump than the sard and will flow more
ray has a few other bits done to his s15 and running a hks gtrs






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