250cc vs 300cc injectors

[emev0l]

Any change in nozzles is a change in tuning, going from 250/100's to 300/200's will require new tunes, if you were going from 250/200's to 300/200's you would most likely be fine.

The jump from 238/200's to 350/200's was nice, if you go from 250/100's to 300/200's you'll notice a huge difference. Just make sure you have all the supporting mods for all of that fuel.

 

[Tim @ P.I.S.]

I do recall a post from Tim @ PIS stating that with a 200% nozzle or smaller fuel side mods are not worth it for most setups as the 200% or smaller nozzles will still be the main restriction.

You obviously have me confused with another builder.

 

[superpsd]

I may have. I searched around and found mixed opinions on fuel side mods with 200% nozzles. Mainly it sounded like for a street truck the gains were small for the cost of the mods. Some even said they found no gain after flow mods were done as rhe nozzle was still the most restrictive bottle neck. However the builders who do "flow mods" to these injectors likely have their own little secret ways of doing these mods so results probably vary greatly.