I think W/M is a really good idea for boost up around this range and up . I had a ping the other day at afrs that would have been fine at lower boost .

 

I'm personally not a fan of W/M at all. I ran it for a year on my car and it was always causing problems. Getting the right jetting, methanol blend, and tuning just isn't worth it to add another complexity to a system already fragile as glass. I assume you don't have access to E85 where you are? I started running it on the Evo this season, and its like liquid cocaine. I'll never go back to 93 again.

 

I would agree with you for lower boost levels but I have noticed things seem to be a lot closer to the edge when running at 15psi . The range between a bog and a ping has got a lot smaller. Plus summer is coming so ..........................


I think if I go any higher I'll fit the cooling mist system i have and run a smallish nozzle.

No E85 around here .

 

I have plan on toying with a boost activated sprayer for the inter-cooler for the summer time.

 

Have you seen what Rotaman did ?Think he did a thread - Looks pretty good .

https://www.rx8club.com/series-i-maj...prayer-246422/

 

no e85 here either. I was perusing w/m threads on 8club and it seems like the smaller nozzle works best. I would probably get with Kane for further help there. I recall a thread where he tuned a car running w/m

 

another notable feature he added is the 2nd MAF in the inlet pipe. Pulling actual IAT's is always a good thing.

 

Yeah - I have had that since the early days . Was just looking at some old logs - my Iats are pretty well sorted with the larger IC i have.

Only see 3deg C rise on a 3rd gear log and 6C on a 4th gear log (5th on stock g/box). So for short bursts i'm pretty well sorted . Heat soak on the track will be a different story though.

 

another added benefit to w/m is the cooling capabilities...could be a win win with adding that to your set-up

 

does it log both pre and post turbo iat?

 

No . Just post IC , just before throttle body.


A supercharged setup iv'e been tuning lately with W/A I/C sees huge temp increases - 13C just in a 2nd gear log.

 

With the nozzles on the far ends like that, at speed it is not likely very efficient in terms of what is possible. Running a supported alumimum or SS supply tube across the middle length with nozzles off of it pointing straight at the IC is likely a better setup IMO.

 

Team, the setup I'm using for my intercooler sprayer has been tested to be one of the best setups on the market.
It is not designed to produce lots of water hitting the IC, but a very fine mist.
The pump is rated at 200psi and easily covers the whole IC with just the two nozzles.
The airflow into the intercooler is what makes it efficient, the air pushes the mist into the intercooler. It does not rely on the nozzles to direct the mist into the IC.
For this setup to work at its best you would really have the nozzle in the middle of the intercooler pointing out to the front of the car, not pointing at the IC.
If anyone is actually interested in this type of setup, then here is a link to where I got the info from.
AutoSpeed - World's Best Intercooler Water Spray, Part 1

Rotaman

 

Sorry if you see it as a slam or something. The engineer in me just looks at it and says it could be improved on is all.

What do you think that air at 60+ mph is doing to a mist being applied at the far ends of a wide intercooler? I'm willing to bet that it won't look anything like your static vehicle video and it is instead only misting those far end surfaces best case.

My suggestion helps to ensure misting across the full width of the intercooler rather than assuming it gets there from the end. Maybe get a GoPro camera and make a vid at speed to see for yourself? If I'm wrong it won't hurt my feelings or anything. I'll just be surprised is all.

 

No problem Team, I wasn't taking it personally.
I'm sure you are right and maybe with some more testing, it could be improved on.
This was the first setup of this that I'm trying.
I will see how it goes over the summer months and maybe try a couple of other combinations, and see what works the best.
The idea of using a camera to check it out sounds like a good move.
Thanks

Rotaman

 

Fitted water injection yesterday.
Using windscreen reservoir for tank and T'd off the outlet of the washer pump .... there is no leakage from nozzle when I turn on the windscreen washer .
Found a great place to mount the pump.

Nozzle is 200ccs on min pressure and 300 on max . I have it set around 200ccs/min


Did some back to back runs in each direction on same stretch of road, first with WI then without.

Fisrt chart is a log of speed vs time which shows a slight decrease in performance with water(no meth) . Blue vertical line is approx. switch on point (12psi). Boost is 14-15psi from 4500 on up.



Second chart is EGT . WI log run starts from a lower point and is trending towards the same finishing point . Kinda looks like EGT is not really affected by WI at this level . I really need a log where egt starts from same point to get a better picture though.

 

Very interesting.
What happened to the AFRs?
I'm guessing it was a bit on the rich side?

You're displacing molecules of air in favour of water.

 

Can't see from the log because both are flat-lining and i never looked at gauge.

Mass airflow is identical between the runs though , so .......................

 

when you going to add the meth?

 

I'm not at this stage .
After some research on the subject .........I'm more inclined to reduce the amount of water injected to a point where performance is almost identical then leave it at that .

 

So are these results about what you expected?
Slightly lower exhaust temps IMO is a huge win plus the added bonus of getting some water in there to reduce carbon build up.

However I do find the result a bit odd.
Same boost
Same maf g/s
Air displacing water
A bit more power?

Can the WI really lower the IAT and increase the air mass density that much?

Anyways, I'm glad you're messing around with this and posting results/findings.

I'm seriously considering putting the NO2 back on with a small 25 or 35 shot.
(Technically it's still on there, I just have to put the tank back in the trunk, install the NO2 control actuator and put the BHR TB spacer in line)

edit:
Ah you posted ahead of me ... lol oh well some questions already answered

 

You're using you washer reservoir pump for injection?

 

Well ... I was hoping for no performance reduction and reduced EGTs . I don't remember ever seeing anyone try this at an elevated boost level (and posting the findings) so thought it worth experimenting with.

Can't really say the EGTs are lower as the WI run started from a lower EGT and it is catching up. It looks to me like EGTs will end up about the same either way - more testing needed though.

Nitrous ? Do eeeeeeeeeeeeeeeeeeeeeeeeeeeeeet !

 

No - just the same reservoir .

Pump is 200psi .............. cooling mist .

 

any difference in timing?
well you probably didn't have timing pull before.. mm
do you have that system diactivated?