27 replies to this topic

[Bumblebee]

Stage 4 requires vxr injecters so I presume stage 3 the limits??

[siztenboots]

stage 2 is the limit on std injectors

[TurboTurkey]

What duty cycle are they on at st2 etc as this would obviously be the limitin factor ?

[Bumblebee]

I was running stg 3 with standard injectors

Edited by Aimy, 22 August 2012 - 12:18 PM.

[SteveA]

Me too, 265bhp MMG Stage 3.

[siztenboots]

I maxed out the standard injectors, that was with a standard turbo and exhaust (including all cats), plus 3" 2bular backbox , that was on the dyno at Courtenay Sport, early in 2007 and with the target lambda you could see the injector duty maxed out at 25ms , ideally you want to be 20ms (approx 80%).

[TurboTurkey]

I agree on the 80% cycle being best. Have seen higher though but that not good news. What power did u get at 80% ??

[siztenboots]

We did not leave it like that as the ecu could not get target lambda ( i think 0.86 ) it just kept rising, put the standard map back on , then a few months later went back with a stage 3 chargecooler setup and fitted the bigger injectors.