Injector timings + performance

[tang0]

I've recently started logging data from my ecu, and am slightly worried about future performance upgrades ...

I currently have a '96 S2 GTS-T, hks filter and kakimoto cat back

I have a hks evc iv to install that came from my mr2 turbo ...

anyway, looking at my injector pulse widths, and duty cycle i can see that I am reaching 15.2ms pulse, and 62% duty ...

this to me sounds pretty high for a car thats running standard boost !

do i need to upgrade injectors before i up the boost ?

I'm only planning on running 10psi, but want to use the evc for the actuator control it gives me ...

any insight would be a great help !

thanks

[Steve]

62% duty is fine - start thinking about upgrading when you get closer to 80-85% duty.

Having said that, a decent fuel pump will be needed before your injectors will be a problem. This is a good idea once you start to nudge around 200rwkw.

Add an adjustable fuel pressure reg, and run 3kg base pressure (2.55kg is stock) and you can stretch the stock injectors a bit further quite safely.

What sort of power goals are you after? You should be able to get 230+rwkw quite safely with fuel pressure reg and decent fuel pump. Above this point is when you really need to be thinking about injectors.

[tang0]

cool, thanks for the advice ..

I'm really not looking for HUGE hp, or kw, i'm looking for more torque, obviously it's going to be nice to have the kw all through the rev range tho ...

I'm a big fan of sydneykids 'average power' methodolgy

I;ve already have high hp cars that go wizz bang, i want a proper useable driving car with lots of power !

cheers