Water-Methanol Injection for GTR/GTC
Thread Starter
Joined: Mar 2020
Posts: 591
Likes: 341
From: Northeast USA
2020 AMG GTC
Water-Methanol Injection for GTR/GTC
I am looking for some recommendations on a Water-Methanol injection (WMI) system for the GTR/GTC from someone that actually installed and use such system.
Looking mainly for use on hot track days, to provide additional cooling for intake air , better engine protection and maybe some increases in HP/TQ.
Any recommended brand? (Snow, Weistec, PTG etc.)
Is using the windshield washer tank enough for a 20 min track session? Which nozzle are you using? Did you find a good space in the GT for a larger mixture tank?
Do I need a special tune to use WMI? If yes, is using a 100 Oct map with actual 93 Oct fuel will cut it? any concerns or considerations when running out of water-methanol mixture while on track?
I have noticed that some systems do not have any in-cabin controls, everything is automatic and set with during the initial setup. Is there any adjustment needed to the WMI on a regular basis? Do you recommend a system with in-cabin controller?
What are some of the recommended on-off boost levels?
Any reason Snow is at much lower cost point then Weistec or PTG?
Any pitfalls to watch for?
Any additional info will be appreciated.
Looking mainly for use on hot track days, to provide additional cooling for intake air , better engine protection and maybe some increases in HP/TQ.
Any recommended brand? (Snow, Weistec, PTG etc.)
Is using the windshield washer tank enough for a 20 min track session? Which nozzle are you using? Did you find a good space in the GT for a larger mixture tank?
Do I need a special tune to use WMI? If yes, is using a 100 Oct map with actual 93 Oct fuel will cut it? any concerns or considerations when running out of water-methanol mixture while on track?
I have noticed that some systems do not have any in-cabin controls, everything is automatic and set with during the initial setup. Is there any adjustment needed to the WMI on a regular basis? Do you recommend a system with in-cabin controller?
What are some of the recommended on-off boost levels?
Any reason Snow is at much lower cost point then Weistec or PTG?
Any pitfalls to watch for?
Any additional info will be appreciated.
Member
Joined: Jul 2019
Posts: 135
Likes: 71
AMG GTS
Any recommended brand? (Snow, Weistec, PTG etc.)
I use the kit from Weistec and inserted a compatible fuel cell foam to prevent sloshing.
Is using the windshield washer tank enough for a 20 min track session? Which nozzle are you using? Did you find a good space in the GT for a larger mixture tank?
I burn through about 3/4 a tank during a 20 minute session. I bought the kit with V1 injectors then upgraded to V2. I am using stage 2 nozzles on a stage 3 motor.
Do I need a special tune to use WMI? If yes, is using a 100 Oct map with actual 93 Oct fuel will cut it? any concerns or considerations when running out of water-methanol mixture while on track?
A vehicle tuned to incorporate the system as a poer adder will be dependent on the meth as a fuel source. Running out in this case would be bad. A stock tune can use the smallest nozzle and be ok. Running out is still not healthy under wide open throttle.
I have noticed that some systems do not have any in-cabin controls, everything is automatic and set with during the initial setup. Is there any adjustment needed to the WMI on a regular basis? Do you recommend a system with in-cabin controller?
Didn’t find it necessary.
What are some of the recommended on-off boost levels?
Mine is set to 9psi on, full by 18psi.
Any reason Snow is at much lower cost point then Weistec or PTG?
Not sure. Most use AEM hardware including Weistec.
Any pitfalls to watch for?
Aftermarket charge pipe would pop off now and again. Fixed using bigger hose clamps.
I use the kit from Weistec and inserted a compatible fuel cell foam to prevent sloshing.
Is using the windshield washer tank enough for a 20 min track session? Which nozzle are you using? Did you find a good space in the GT for a larger mixture tank?
I burn through about 3/4 a tank during a 20 minute session. I bought the kit with V1 injectors then upgraded to V2. I am using stage 2 nozzles on a stage 3 motor.
Do I need a special tune to use WMI? If yes, is using a 100 Oct map with actual 93 Oct fuel will cut it? any concerns or considerations when running out of water-methanol mixture while on track?
A vehicle tuned to incorporate the system as a poer adder will be dependent on the meth as a fuel source. Running out in this case would be bad. A stock tune can use the smallest nozzle and be ok. Running out is still not healthy under wide open throttle.
I have noticed that some systems do not have any in-cabin controls, everything is automatic and set with during the initial setup. Is there any adjustment needed to the WMI on a regular basis? Do you recommend a system with in-cabin controller?
Didn’t find it necessary.
What are some of the recommended on-off boost levels?
Mine is set to 9psi on, full by 18psi.
Any reason Snow is at much lower cost point then Weistec or PTG?
Not sure. Most use AEM hardware including Weistec.
Any pitfalls to watch for?
Aftermarket charge pipe would pop off now and again. Fixed using bigger hose clamps.
Thread Starter
Joined: Mar 2020
Posts: 591
Likes: 341
From: Northeast USA
2020 AMG GTC
Thank for the info. Very helpful.
The 20 min on track using 3/4 tank. What is the size of the tank? is that the windshield washer tank (which is 0.8 gallons)?
The 20 min on track using 3/4 tank. What is the size of the tank? is that the windshield washer tank (which is 0.8 gallons)?
Thread Starter
Joined: Mar 2020
Posts: 591
Likes: 341
From: Northeast USA
2020 AMG GTC
Member
Joined: Jul 2019
Posts: 135
Likes: 71
AMG GTS
My car is in storage for another month so unfortunately I can’t take a picture.
