Quote:
Originally Posted by Grant M
I think Peter has said that with water you increase boost and there is no need to mess with timing to gain power loss IF your ignition is nice and powerful.
I may be wrong
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My opinion as a tuner is that when working with engines that want to implement water injection in their setup they have to have a base ingition/fuel tuneup without water injection first. When Max power and torque is achieved without any knock then water injection is intiated.
Water injection is turned on and adjusted as of what the setup needs. Increase boost as the setup needs and when all adjustment is done then ignition timing must be increased 1-3psi further when water injection is initiated accordingly.
If ignition timing is not changed, engine will give better power/torque on top end because of higher boost. If ignition timing is adjusted from turn on of water injection till peak power will result that you gained power/torque from that point till peak power + power increase of boost pressure