View Single Post
Old 10-03-2007, 10:42 PM   #142
fatpat
Scooby Newbie
 
Member#: 152817
Join Date: Jul 2007
Chapter/Region: South East
Location: South of Heaven Fl.
Vehicle:
02 WRX Wagon
White

Default

For those of you who have done a true back-to-back test of 100% water injection vs the other blends, what do you see with your air fuel readings? I'm only interested in the cooling agent of water and not interested in the alk or meth blends. As a direct comparison, if your car is tuned for a target 11.5:1 AFR with regular old 93 octane and you sprayed only water, would you see big differences in the AFR with your existing tune? Would even more unburned fuel exit the combustion chamber since the water (steam at this point I suppose) is absorbing and dispersing some of the heat? My goal is a more efficient burn and reducing EGTs along with detonation prevention. I just had my car on the dyno with a PDX email tune and I'm starting at 10.4:1 and jump quickly to 9.7-9.8:1 all the way to redline. I will be tuning the car in a week or two to something more in the low 11's:1 range and wouldn't mind adding water injection in the near future. Thanks in advance.

Wow, long post.
* Registered users of the site do not see these ads.
fatpat is offline   Reply With Quote