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Old 04-10-2013, 09:48 PM
parmas parmas is offline
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Join Date: Jun 2013
Location: malta
Posts: 210
Default Re: A few questions concerning preTurbo water injection

Quote:
Originally Posted by Flr Power View Post
No, no and no. Do not follow parmas "tuning" method. This is clear evidence he needs to get the straight fact. This is old school "tuning". Maybe it is old school but sure it works by facts

mrx79, you are not really losing HP with WI and 21-22?BTDC@16psi should be plenty enough timing. How could you tell 21-22 is good? Cams/compression/plug heat range/coil dwell/charge time/combustion chamber/engine load/turbo/air temperature/engine temperature! These altogether has an algorithm of ? timing an engine needs

With you current power level, you may not need WI if the fuel octane number is good where you live but the set up is getting close to use it. He may not need water injection, but surely there is always an advantage to use water injection. Water injection + METH, is purely an air cooler + octane booster. Altogether need ignition advance to get the power. If he is running 16psi with a 15C air temperature @ 7000rpm maybe yes he does not need water injection at all!

If you need more power then raise boost to about 20psi, run that 350ccm nozzle and start with low ignition like 12?BTDC and raise it on the dyno run after run until you get to a plateau (while making sure the engine does not detonate) then back up 1-2? to have a super safe tune.Have you ever heard of engines tuned "safely" on dyno and ruined at the first run on track?

Also, make sure you set up and test the WI failsafe properly. This is the most important thing to do unless you do not mind rebuilding.AGREED THIS IS IMPORTANT AND most of us forget to take care of prevention
Cheers....
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