Auxiliary Injection The place to discuss topics of water injection, alky/meth injection, mixing water/alky and all of the various systems and tuning methods for it. Aux Injection is a great way to have a reliable high power rotary.

Water/Meth Injection on Stock Twins?

Thread Tools
 
Search this Thread
 
Old Apr 26, 2009 | 08:22 PM
  #1  
jonnyrx7's Avatar
Thread Starter
ROTARY PUNX
Tenured Member: 15 Years
iTrader: (9)
 
Joined: Oct 2008
Posts: 938
Likes: 0
From: Los Angeles, CA
Water/Meth Injection on Stock Twins?

I know the concept...I know what it does...but what about our cars specifically.
Has anyone tried this? What are the dangers?

I know one of the kits I was looking at has a set boost limit...so for example...once I were to reach 9psi it'd be activated until boost drops from that 9psi limit.

Stephen at GMG & STOP-TECH said it'd be beneficial since Rotary's get so hot...but does anyone have experience? Seems like mostly single turbo guys are running it.

EDUCATE ME GUYS!!! haha

Thanks

Example: Some kits have the nozzles going into the intake. Wouldn't this cooler charge potentially make us want to overboost?
Reply
Old Apr 27, 2009 | 08:02 PM
  #2  
smoke wagon's Avatar
you smell somethin?
Tenured Member 20 Years
iTrader: (4)
 
Joined: Jun 2004
Posts: 303
Likes: 0
From: Kansas City
I run a water injection setup on my seq-setup. The water has dropped my egt's significantly. Also the greddy elbow is now the coldest part of the intake not the cold side of the intercooler. I also noticed how much cleaner the turbo’s were for the water injection when I removed them for some routine work. I have mine setup to come on at 8psi with a 300cc unjector. With this setup I have been able to run 16-17psi with egt's that are equal or less than before the injection on 13.5psi. However, I have a G-Force ecu that has a conservative tune. Incase you are wondering my AFR's are 11.3 at 17psi from 5200rpm untill around 6500rpm where the ratios dorp to 10.5.

Ryan

Last edited by smoke wagon; Apr 27, 2009 at 08:10 PM. Reason: addition of post
Reply
Old Apr 28, 2009 | 05:10 PM
  #3  
jonnyrx7's Avatar
Thread Starter
ROTARY PUNX
Tenured Member: 15 Years
iTrader: (9)
 
Joined: Oct 2008
Posts: 938
Likes: 0
From: Los Angeles, CA
could i run it on a non seq setup and the pettit unlimited ecu?
Reply
Old Apr 28, 2009 | 05:34 PM
  #4  
smoke wagon's Avatar
you smell somethin?
Tenured Member 20 Years
iTrader: (4)
 
Joined: Jun 2004
Posts: 303
Likes: 0
From: Kansas City
Shouldn’t have a problem however, the Pettit has a more aggressive tune so you probably won’t be able to run as high of boost. Also I would recommend a good monitoring system like a Zeitronix or something so you can see your AFR's, Boost, EGT's, Water injection pressure and more. That way you can determine what to set your boost levels at. Also it would be a good idea to have supporting mods and ceramic coat your turbo manifolds and exhaust to avoid heat soak.

Ryan
Reply
Old May 1, 2009 | 09:50 PM
  #5  
94touringFD's Avatar
Senior Member
Tenured Member: 15 Years
iTrader: (30)
 
Joined: Sep 2008
Posts: 651
Likes: 1
From: Albany, NY
When I was talking to djseven he suggested this mod to me as well, to achieve even more reliability with my build. What is a good unit to get for a twins set up? In my sig I have a link to my mod list if it helps.
Reply
Old May 2, 2009 | 11:05 AM
  #6  
WaachBack's Avatar
Finally Knows
Tenured Member: 20 Years
Liked
Loved
iTrader: (22)
 
Joined: Sep 2003
Posts: 1,108
Likes: 0
From: Hawaii
There is no reason not to run it. Check my sig for my setup.
Reply
Old May 26, 2009 | 09:45 PM
  #7  
zweetz32's Avatar
Full Member
Tenured Member 15 Years
iTrader: (2)
 
Joined: Apr 2009
Posts: 238
Likes: 5
From: Chicago
where would be the best place to mount the jets? Would the elbow be the best place? Installing it pre-turbo would require 2 jets correct?
Reply
Old May 27, 2009 | 03:57 AM
  #8  
WaachBack's Avatar
Finally Knows
Tenured Member: 20 Years
Liked
Loved
iTrader: (22)
 
Joined: Sep 2003
Posts: 1,108
Likes: 0
From: Hawaii
Yes, but that's debatable.

Yes.
Reply
Old May 28, 2009 | 01:48 AM
  #9  
Dudemaaanownsanrx7's Avatar
wannaspeed.com
Tenured Member 20 Years
iTrader: (23)
 
Joined: Feb 2003
Posts: 2,802
Likes: 5
From: Texas
Originally Posted by zweetz32
where would be the best place to mount the jets? Would the elbow be the best place? Installing it pre-turbo would require 2 jets correct?
you could do 2 jets, or have an intake box with the nozzle positioned in the box close to equal distance from where each turbo would draw air in. (centered in the side of the box for instance)
Reply
Old May 28, 2009 | 10:10 AM
  #10  
jonnyrx7's Avatar
Thread Starter
ROTARY PUNX
Tenured Member: 15 Years
iTrader: (9)
 
Joined: Oct 2008
Posts: 938
Likes: 0
From: Los Angeles, CA
I would do it into the intercooler
Reply
Old May 28, 2009 | 07:09 PM
  #11  
Dudemaaanownsanrx7's Avatar
wannaspeed.com
Tenured Member 20 Years
iTrader: (23)
 
Joined: Feb 2003
Posts: 2,802
Likes: 5
From: Texas
I don't think the intercooler is a good place. If you change the system later its easier and cheaper to make changes to an elbow or pipe then to the intercooler.
Reply
Old May 29, 2009 | 03:10 PM
  #12  
jonnyrx7's Avatar
Thread Starter
ROTARY PUNX
Tenured Member: 15 Years
iTrader: (9)
 
Joined: Oct 2008
Posts: 938
Likes: 0
From: Los Angeles, CA
Originally Posted by Dudemaaanownsanrx7
I don't think the intercooler is a good place. If you change the system later its easier and cheaper to make changes to an elbow or pipe then to the intercooler.
Intercooler cool side pipe is what I meant.
Reply
Old Jun 2, 2009 | 01:12 AM
  #13  
zweetz32's Avatar
Full Member
Tenured Member 15 Years
iTrader: (2)
 
Joined: Apr 2009
Posts: 238
Likes: 5
From: Chicago
i'm planning to run this on a stock twins on the FD. What jet size and at what psi level should I start shooting do you recommend? I will just be having intercooler, intake, downpipe, and catback. Also, would running meth/water (windshield fluid) be ok? I plan on putting the jets on the intake elbow, is one jet ok?
Reply
Old Jun 2, 2009 | 02:33 PM
  #14  
WaachBack's Avatar
Finally Knows
Tenured Member: 20 Years
Liked
Loved
iTrader: (22)
 
Joined: Sep 2003
Posts: 1,108
Likes: 0
From: Hawaii
Stock injectors and ECU I assume? That means you really dont need A/I because you boost will only be around 10 PSI. If I were you, I'd spend the money on a PFC first.
Reply
Old Jun 3, 2009 | 12:47 AM
  #15  
zweetz32's Avatar
Full Member
Tenured Member 15 Years
iTrader: (2)
 
Joined: Apr 2009
Posts: 238
Likes: 5
From: Chicago
stock injector, do have PFC. I'm not aiming at getting more power, i'm aiming at running cleaner and lower temps.
Reply
Old Jun 3, 2009 | 01:25 AM
  #16  
Dudemaaanownsanrx7's Avatar
wannaspeed.com
Tenured Member 20 Years
iTrader: (23)
 
Joined: Feb 2003
Posts: 2,802
Likes: 5
From: Texas
Prob just water would be ideal for your setup and only a low amount like 150-200cc
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
Jul 1, 2023 04:40 PM
Th0m4s
Build Threads
25
Feb 26, 2019 02:04 AM
msilvia
3rd Generation Specific (1993-2002)
28
Apr 14, 2016 12:58 PM




All times are GMT -5. The time now is 12:47 PM.