#245504
introduction
the use of water injection to prevent detonation began in ww2 on finicky b29 aircooled radial engine bombers

since my motor is /was finicky
runs on the ragged edge of block destruction at over 400 hp at the crank
[347whp on tune 2]
i thought this could be a useful safeguard on my motor

the original goal was to match [at 16lb boost], the whp and tq of tune 3 which runs 50% e85
since e85 is pretty much not available here
[361 whp, 374 ft lb tq]

what really happened?
we made the engine less radical and longer living by dropping 2lbs boost

much more streetable now, less explosive display of power
a broader tq band

and 19lft lb more tq with the same 347whp [for tune 2]
on 2lbs less boost

the driving experience has radically changed
before i would get nervous if the engine were operating below 3000 rpm [c1 cams]
and never let it go below 2600 rpm

with no knock or ping on tq pro
i can cruise at 2200 rpm in 6th gear

pull hills
a no shift, low speed highway experience

from 3200 up in 6th there is a more noticeable boot in the pants
you can feel 19 ft lbs of tq

effortless passing trucks in 6th
at much lower speeds than before

i feel safer, i imagine the spray cleans the plugs too
comes on at 6lb boost [read often]

so my plugs are spotless
i push it just to hear the pump run
lol

even so, my calculated mpg has gone up a little over 1mpg
hard to tell on just 2 tanks of gas and a 1/4 tank of boost juice
it always had a fair idle, but totally consistent now

much happier at sub 2500 rpm now
almost running 1 gear higher than normal

i'm tickled with how it runs now
it's like a normal motor
quieter too [perhaps because i'm one gear higher]

current dyno chart is in red

look at the run numbers
give you an idea of the time it spent on the dyno
[all day]
Image20180112_153923 by Barry Belgard, on Flickr

we startd with a base dyno in nov for tune 2 and tune 3
Imageyogitune by Barry Belgard, on Flickr
#245505
parts list
we used a hybrid system

pump, lines and connectors from
coolingmist
ImageIMAG0277 by Barry Belgard, on Flickr

tank tap, filters, boost activation sensor, number 4 nozzle and nozzle bung from
devilsown
ImageDSCN0862 (2)_LI by Barry Belgard, on Flickr

reservoir is a new oem windshield washer tank
filled with snow performance boost juice
ImageDSCN0890 by Barry Belgard, on Flickr
#245506
install is pretty much hidden from veiw

pump, short run from new tank tapped with devilsown filtered tap
Image20180112_101429 by Barry Belgard, on Flickr

hidden behind bumper cover
Image20180112_114216 by Barry Belgard, on Flickr

relay and boost activation device on firewall
Image20180112_101119 by Barry Belgard, on Flickr

nozzle underneath intake pipe
Image20180112_100956 by Barry Belgard, on Flickr

new boost and AFR gauges added
Image20180112_100826 by Barry Belgard, on Flickr
#246283
been running for several months now, no problems at all
engine is more docile, idle was good to start and un-flinchable now

system rarely comes on, still on the original gal of boost juice

370 ft lb of tq currently unusable ,except for passing in 5th or 6th gear
with my winter rain tires,
[toyo, RR-1s, 235/40/17] up front

if your boosted, and your engine is on the edge
imo
this is a good system to add for longevity as well as performance
#246284
at ambient air temps of 70 degrees
49/51, math/water injection effectively drops inlet temps below ambient
Imagescreenshot by Barry Belgard, on Flickr

note the actual?[tq app] hp i can deliver to the ground on rain tires
[rain tires to be more hydroplane resistant, had to be reduced in width, down from 255s to 235s]



for the science folk
the procedure

tq app started after running temp establishied
driven normally but below 10lb boost [3-6lb, from what i could see]
inlet temps at 80"

wot till 10lb injection start up
tires spinning, 1nlet temp drops to 64* in seconds

back off, temps begin to rise

repeated 3 times
same results
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