My 20v ITB installation

[ZaX]

Yo Ian
The basic formula for calculating fuel requirements is (no. of cylinders x injector flow rate) / 6.75, this equals to about a 90% duty cycle. For example a car with 4 cylinders and 215 cc/min injectors, would have enough fuel for (4 x 215) / 6.75 = 127 hp.

Another useful formula is for calculating the percentage increase of fuel flow through the injectors if the fuel pressure is raised. The formula for this is the square root of (new pressure / stock pressure). So for example let's say you increase your fuel pressure from 38 psi to 48 psi, you percentage increase of fuel would be (48 / 38 = 1.26315). The square root of 1.26315 = 1.12, so you have now increased fuel flow by 12%. So if your injectors are 215 cc/min, you would now have (215 x 12% = 25.8 ) + 215 = 240.8 cc/min injectors.

Some basic info on toyota injectors can be found here.
http://www.aeu86.org/viewtopic.php?t=500

Look what i used to have...a black cat on red top engine.


Then some stupid driver "de-cated" me, so now i have white sparco cat.