
Originally Posted by
turbomirage
Walbro makes two different 255 pumps... I don't know why they do, seems pointless to me... but they do. If the Walbro 255 from Summit is made for your Honda, and it is a high pressure one, then that is the one to get. The only way to tell if it has any effect on your tune is by reading your A/F on the dyno. If anything, it will dump more fuel than you had before at certain rpms, so you will be ok. You might be running a little richer at first, but then you can tune it accordingly. You just have to dyno it and see...