At what point do I change to bigger injectors?

[mstennes]

I'm going to start modifing RXP #2 its a all stock 06, the other 06 is at stage 2 I want to take this one further up the ladder of mods and not sure where or how I want to ge yet. Just putting ideas together, so far I have a XS IC.

[TorquePhoto]

With an external IC you should think about injectors when you increase the boost (new SC or SC wheel). Also if you havnt already you should do metal SC washers ASAP

[Danny]

External IC and new SC wheel = larger injectors...

[mstennes]

OK then how big do I want to go? Also when do I want to remap or buy a remapped ECU?
Thanks,
Mike

[Danny]

OK then how big do I want to go? Also when do I want to remap or buy a remapped ECU?
Thanks,
Mike

External IC + SC wheel = 42#'s

External IC + SC wheel + ECU = 50#'s

[hydrojunkie]

External IC + SC wheel = 42#'s

External IC + SC wheel + ECU = 50#'s

and valve train upgrade

[yellow4]

I know for the new sc wheel and ext cooler you need to go with 42's but is EVERYBODY doing the valve train upgrade too?

[VX1]

Probably nobody with just the wheel & cooler, but with the ECU upgrade to move the revs 8600+, yes. I think hydro was just referring to the wheel+cooler+ECU combo.

[ramnj]

External IC + SC wheel = 42#'s

You should be fine with the stock injectors.

[Swedie]

it´s also to be notice where you live on the high above the sea... I must use stock injectors with the xs ic and rotax wheel, with the 42# inj it´s running to rich.