Meth: less is MORE!!!

D

ddlopes

New member
So I've been working with AJP on tuning my meth injected 13' SHO w/PP. I initially had my Snow Performance stage 3 setup with the primary nozzle at 100ml and the power nozzle at 625ml. That setup was requested by the previous tuner. After the reading first datalog AJP informed me the meth wasn't doing its job. For some reason it wasn't cooling properly and the ecu was pulling fuel. So AJP informed me to switched the 625ml power nozzle to a 175ml. He stated that I was using way too much meth. What a difference!!! I'm finally enjoying the meth and the car is pulling harder than ever. So just so you meth users now its not always best to inject more than less. 
 
ddlopes said:
So I've been working with AJP on tuning my meth injected 13' SHO w/PP. I initially had my Snow Performance stage 3 setup with the primary nozzle at 100ml and the power nozzle at 625ml. That setup was requested by the previous tuner. After the reading first datalog AJP informed me the meth wasn't doing its job. For some reason it wasn't cooling properly and the ecu was pulling fuel. So AJP informed me to switched the 625ml power nozzle to a 175ml. He stated that I was using way too much meth. What a difference!!! I'm finally enjoying the meth and the car is pulling harder than ever. So just so you meth users now its not always best to inject more than less.
Click to expand...


Sounds like a nozzle issue... if it wasn't cooling the IATs...

Glad you have found continued success!


Sent from my iPhone using Tapatalk
 
It was strange...the short term fuel trims were at .75 so it was pulling a ton of fuel and the afr was richer than commanded because the ecu was unable to pull enough fuel because there was so much meth so i couldnt understand why there wasnt adequate cooling of the charge temps

I really dont like the progressive meth sprays...i get the idea though...more meth when there is more boost..should negate the heat and give more octane as boost rises....but a moderate steady amount of meth usually gives the cooling and octane we need. And the ecu can trim the fuel quicker and better because with a steady meth spray the fuel trims level out quicker  which i think is better fir the spark plugs and 02 sensors and makes the car smoother
 
AJP turbo said:
It was strange...the short term fuel trims were at .75 so it was pulling a ton of fuel and the afr was richer than commanded because the ecu was unable to pull enough fuel because there was so much meth so i couldnt understand why there wasnt adequate cooling of the charge temps

I really dont like the progressive meth sprays...i get the idea though...more meth when there is more boost..should negate the heat and give more octane as boost rises....but a moderate steady amount of meth usually gives the cooling and octane we need. And the ecu can trim the fuel quicker and better because with a steady meth spray the fuel trims level out quicker  which i think is better fir the spark plugs and 02 sensors and makes the car smoother
Click to expand...

Makes logical sense, although you seemed pretty happy with the Alky kit.


Sent from my iPhone using Tapatalk
 
StealBlueSho said:
AJP turbo said:
It was strange...the short term fuel trims were at .75 so it was pulling a ton of fuel and the afr was richer than commanded because the ecu was unable to pull enough fuel because there was so much meth so i couldnt understand why there wasnt adequate cooling of the charge temps

I really dont like the progressive meth sprays...i get the idea though...more meth when there is more boost..should negate the heat and give more octane as boost rises....but a moderate steady amount of meth usually gives the cooling and octane we need. And the ecu can trim the fuel quicker and better because with a steady meth spray the fuel trims level out quicker  which i think is better fir the spark plugs and 02 sensors and makes the car smoother
Click to expand...

Makes logical sense, although you seemed pretty happy with the Alky kit.


Sent from my iPhone using Tapatalk
Click to expand...

Yea i was....im sure there were other variables i just dont know what they were
 
this makes sense.  meth should atomize to work as a cooling agent.  I remember it like this: a stream of room temp water from a hose might feel good on a hot day, but those misters at amusement parks using the same temp water give goosebumps. 
 
Interesting, to compare I did not get decent cooling until I switched to a 375 nozzle, and also saw up to .8 on the STFT.. 

What psi did you switch on at ?  And what pump pressure? 

For me it seems cooling REALLY kicks in in the upper rpm band where I think it is more likely the meth will spray/mist the iat2 sensor..

 
I setup my primary nozzle to start spraying at 3psi and max out at 4psi. My power nozzle is set to spray at 4psi and max out at 5psi. I'm not sure what the pressure is on the pump.





TopherSho said:
Interesting, to compare I did not get decent cooling until I switched to a 375 nozzle, and also saw up to .8 on the STFT.. 

What psi did you switch on at ?  And what pump pressure? 

For me it seems cooling REALLY kicks in in the upper rpm band where I think it is more likely the meth will spray/mist the iat2 sensor..
Click to expand...
 
That's really early IMO... mine doesn't start spraying until 6psi... but mine is a single nozzle setup.


Sent from my iPhone using Tapatalk
 
StealBlueSho said:
That's really early IMO... mine doesn't start spraying until 6psi... but mine is a single nozzle setup.


Sent from my iPhone using Tapatalk
Click to expand...
Same here .. I think mine turns on about 6-psi as well.. 

I'm afraid of swamping misfires and hydrolocking too much earlier. 

Sent from my Nexus 5X using Tapatalk

 
At 6psi i still get spray sometimes at part throttle but any later my IATs don't drop fast enough off the line. They spool so fast.


Sent from my iPhone using Tapatalk
 
StealBlueSho said:
At 6psi i still get spray sometimes at part throttle but any later my IATs don't drop fast enough off the line. They spool so fast.


Sent from my iPhone using Tapatalk
Click to expand...

Same here,  if it is 1/3 or better and the 'load' is high enough I see it pop on.  I don't mind though and let it do its thing ..
 
I have mine dialed in at 145kpa... I forget the volt I set the controller at.. but it corresponds with the boost.


Sent from my iPhone using Tapatalk
 
Yea I just took a guess and based on daily driving where to start it. Then I datalogged a few different setting to see where the sweet spot was for me... 6 seems good for my application. I asked LMS where they recommend spraying and was given the old "every car is different, but we would love for you to come and get it dyno tuned"... bleh


Sent from my iPhone using Tapatalk
 
You must log in or register to reply here.

Similar threads

S
Meth Injection NOT Cooling air charge...
Replies
18
Views
6K
StinkinLinkin13
S
L
Did the 2013+ brake upgrade... Issues...
Replies
1
Views
3K
351Blueblood
3
E
HOW-TO: 2015 Explorer Tablet Installation For Torque Pro Gauge Display
Replies
2
Views
7K
Ecoboost_xsport
E
StealBlueSHO
LMS 2010-2012 4X Alky Tune Testing
Replies
3
Views
5K
ZSHO
Z
StealBlueSHO
J2 Dual Feed Intake
Replies
17
Views
14K
NITSOOB
N
Back
Top