Post by
float_6969 »
https://forums.nicoclub.com/float-6969-u780.html
Sun Jun 15, 2014 8:37 pm
To be clear, it's WATER and methanol. The water is important here. Regardless, it's a GREAT thing to do, ESPECIALLY if you're running on pump gas.
I've used it on my CA18 before I went to E85. I had a simply boost pressure switch that ran a relay, that operated a pump that pulled windshield wiper fluid out of the wiper fluid reservoir. That went into a sprayer at the outlet of the cold side of the intercooler.
I did this because I had INCURABLE detonation issues running over 10:1 compression + boost on 91 octane in the summer. Once the simple water injection kit went on, no more detonation and I was able to turn the ignition timing back up to optimal and made a bunch more power.
This last sentence is the most important. WATER/ALKY INJECTION WILL ONLY GAIN YOU POWER IF YOU'RE HAVING TO RUN LESS THAN OPTIMAL IGNITION TIMING TO PREVENT DETONATION!!! If this isn't your situation, then you won't likely see any gains.
If you're running the stock ECU, and don't have a way to alter the fuel and ignition timing YOU WON'T SEE ANY GAINS.
You HAVE to combine the ignition with fuel and timing changes to see more power.