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Guys

this is probably a SQ but I have just got hold of a set of new 550cc injectors and some splitfire coil packs for my R32 GTR

My questions is can I fit these without needing to retune my PFC

I assume the coils will be a safe swap - but what about the injectors ?

If it does require a retune - should it require a FULL retune ($700 on the dyno) or can my current tune be tweaked ?

Different injectors will have different flow rates at the same duty cycles so - yes you will need a retune. Although you will not need to start from scratch so it should not be anything like the cost of a full initial tune.

Edited by JCMarshall_Law

will need to be adjusted on the pfc and a/f checked but it would only be to check the calibration of the setting for the new injectors a few runs on the dyno should do it, no worries 1hour but no more than 1 1/2hours MAX(if it's tuned well now.

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