Dual spray pattern injectors versus single spray pattern

[ivan129]

Engine is 1UZFE non VVTI. Currently I have 750cc single spray pattern injectors fitted and heading off to the dyno again shortly after some enhancements requiring a new tune. I'm wondering though if there is any value in fitting dual spray pattern injectors and if anyone has had any personal experience in using both single and dual pattern on 4 valve engines. I might fit a set if there gains to be made. OEM injectors are dual pattern. Feedback would be appreciated. Thanks

 

[planeant]

The injectors become beams, the consumption decreases, the engine responsiveness increases.

 

[ivan129]

Going from single spray pattern injectors, then fitting dual spray injectors did make more off idle torque and improved throttle response. I used a set of Sard 63562, 650cc injectors. Fuel economy... haven't bothered to compare. 63562's are plug and play, 11mm top feed, same length as OEM, high impedance, just flow is different.