Methanol Injection Install DIY - FINALLY!
Give it a try and report back....
I have no experience with meth, so I'm also concerned about something going boom. I probably wouldn't use it to get more aggressive with timing and boost, but rather to keep IATs from getting too high and the ECU pulling timing.
I need to educate myself a bit, I think.
I have no experience with meth, so I'm also concerned about something going boom. I probably wouldn't use it to get more aggressive with timing and boost, but rather to keep IATs from getting too high and the ECU pulling timing.
I need to educate myself a bit, I think.
I usually see right around 80-90 degrees depending on ambient temps. For example, on a 60 degree day I will get right around 80 and on a 95 degree day I'll see 90. I've spoken with Devils Own and they believe my system is very well dialed in and recommended not tweaking it anymore. I have the ability to easily change when i activate the meth, from IAT's, RPM's, TP, and boost. Or I could setup complex triggers to meet several of these parameters. For instance, I could turn on the meth if the TP goes above 85% at 6 pounds of boost and trigger an alarm if IAT's go above 100 degrees. The options go on forever!
Just be careful and make sure you don't take the meth lightly.
I usually see right around 80-90 degrees depending on ambient temps. For example, on a 60 degree day I will get right around 80 and on a 95 degree day I'll see 90. I've spoken with Devils Own and they believe my system is very well dialed in and recommended not tweaking it anymore. I have the ability to easily change when i activate the meth, from IAT's, RPM's, TP, and boost. Or I could setup complex triggers to meet several of these parameters. For instance, I could turn on the meth if the TP goes above 85% at 6 pounds of boost and trigger an alarm if IAT's go above 100 degrees. The options go on forever!
Just be careful and make sure you don't take the meth lightly.
The Best of Mercedes & AMG
I usually see right around 80-90 degrees depending on ambient temps. For example, on a 60 degree day I will get right around 80 and on a 95 degree day I'll see 90. I've spoken with Devils Own and they believe my system is very well dialed in and recommended not tweaking it anymore. I have the ability to easily change when i activate the meth, from IAT's, RPM's, TP, and boost. Or I could setup complex triggers to meet several of these parameters. For instance, I could turn on the meth if the TP goes above 85% at 6 pounds of boost and trigger an alarm if IAT's go above 100 degrees. The options go on forever!
Just be careful and make sure you don't take the meth lightly.

Edit: I will say that meth isn't the miracle mod that will make our cars soo much faster. It will help us run safer and cooler but without tuning for it the gains will be minimal if any. On a good note my EGT's are also down 100 degrees.
Last edited by bassn_07; Sep 29, 2010 at 08:57 PM.
Edit: I will say that meth isn't the miracle mod that will make our cars soo much faster. It will help us run safer and cooler but without tuning for it the gains will be minimal if any. On a good note my EGT's are also down 100 degrees.
I have a few questions, if you wouldn't mind clarifying a few points of confusion for me that may help others with better understanding of meth.
I am planning on simply spraying a mostly water based mix in the same location as Shardul used. It will be activated via boost, so used exclusively for WOT runs to keep IAT's under 140. I am not tuning for it at all. At the track I will be using race gas (100 combined rating) with my "race map" which is designed to advance timing a bit to utilize the higher octane.
My understanding is that I really wouldn't be at any risk if the meth quits. The idea being that it is only to control temps, so if it quits I am exactly where I am today. Obviously my IAT's would rise, causing the car to pull timing and eventually shut down the SC...thus robbing power.
So where is the danger?
While I haven't done consistent logs at the track, I imagine with IAT's over 150 for the back 1/8 I am leaving power behind because the car is pulling timing in response to elevated IAT's. At the next outing my 2 goals are improved 60" (driver mod ftw...lol) and more precise logging. I want to see exactly what my IAT's and timing are through the full run.
I expect a meth injection system would allow the engine to run more timing through the whole 1/4 mile run if I am able to reduce IAT's to less than 140.
This has to translate to more power and better times, no?
Not trying to contradict your statements, just trying to figure it out as best I can.
Thanks guys!
I have a few questions, if you wouldn't mind clarifying a few points of confusion for me that may help others with better understanding of meth.
I am not sure how you have your system tuned, so that might be it.
I am planning on simply spraying a mostly water based mix in the same location as Shardul used. It will be activated via boost, so used exclusively for WOT runs to keep IAT's under 140. I am not tuning for it at all. At the track I will be using race gas (100 combined rating) with my "race map" which is designed to advance timing a bit to utilize the higher octane.
My understanding is that I really wouldn't be at any risk if the meth quits. The idea being that it is only to control temps, so if it quits I am exactly where I am today. Obviously my IAT's would rise, causing the car to pull timing and eventually shut down the SC...thus robbing power.
So where is the danger?
While I haven't done consistent logs at the track, I imagine with IAT's over 150 for the back 1/8 I am leaving power behind because the car is pulling timing in response to elevated IAT's. At the next outing my 2 goals are improved 60" (driver mod ftw...lol) and more precise logging. I want to see exactly what my IAT's and timing are through the full run.
I expect a meth injection system would allow the engine to run more timing through the whole 1/4 mile run if I am able to reduce IAT's to less than 140.
This has to translate to more power and better times, no?
Not trying to contradict your statements, just trying to figure it out as best I can.
Thanks guys!
I'm definitely no expert on water/meth, I just did my research and set my system up accordingly. You guys should do the same. Please just don't be naive and think it's a risk free mod with no possible consequences. Our engines are too expensive to take lightly.
Please feel free to give your opinions on the subject, I'm sure we could all learn...I know I still am. The words "Make no mistake, meth will take your engine quickly if you're not careful." may have been overly exaggerated but that's honestly what I'm scared of. Obviously not scared enough not to run the system but I feel I addressed all my concerns with a counter and feel quite confident. Good luck boys and have fun with the meth!!!!
Last edited by bassn_07; Sep 30, 2010 at 01:02 AM.




I have no doubt the system will not add power, but will reduce the chances of being robbed of power on longer runs. This also will add additional stresses on the motor which in itself can have its consequences.
One thing that worries me is if you spray without full vaporisation the IAT sensor gets a wetbulb reading which is lower than the true dry air temp (bit like blowing air over something thats wet - it instantly feels colder), which may allow the ecu to run the motor to a more marginal level in terms of timing, so something else to consider.
Hydrolocking is a major concern for me and I think I may add a checkvalve to the system to avoid vacuum drain through the system.
Def thinking about something like this for the S65.
Jay
Hydrolock, I honestly never thought of that. Been concerned about flow stopping, never considered the pump NOT stopping...lol. Thanks Alan.
I understand and agree that meth will not add power in most scenarios, however I certaintly hope the lower IAT's equate to quicker 60-130 runs and higher traps.
Oh well, I guess the only way to find out is to slap some meth on that ***** and run the snot outta her
Hydrolock, I honestly never thought of that. Been concerned about flow stopping, never considered the pump NOT stopping...lol. Thanks Alan.
I understand and agree that meth will not add power in most scenarios, however I certaintly hope the lower IAT's equate to quicker 60-130 runs and higher traps.
Oh well, I guess the only way to find out is to slap some meth on that ***** and run the snot outta her

Just make sure you don't go oversize on the nozzle. A larger nozzle will possibly richen up your AFR's to a point that you'll definitely be slower without tuning for it. What seems to be working great for me is the M10 nozzle which added about 1/2 point of fuel. I could easily remove a 1/2 point of fuel through tuning and still feel safe if the meth should fail at WOT. All though with my logging features I'll know well before that.

I will be doing the Solenoid, check valve and cut out switch as well. Someone is helping me, can’t say who
Last edited by shardul; Sep 30, 2010 at 02:53 PM.
i am waiting to follow you on the killerchiller mod
Last edited by shardul; Sep 30, 2010 at 03:35 PM.
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