Hey guys! I’ve been stalking the forums for about a year now while I’ve been doing more and more to my GTI, but I haven’t been able to find this topic covered well in the brief searches I did on vwvortex and golfmk6.
So I am running APR Stage 2 on a 91 file because that is all that is available in Arizona and I don’t want the E85 hassle. I just bought a snow stage 2 wmi kit because I like the increased reliability water meth gives in high ambient temps, and the performance bump you can get. My question is when I add program file switching to my tune to take advantage of the increased octane, I was initially planning on just running a 93 file and enjoying a good little bump in torque and power on the injection setup. I understand that a 50/50 water meth mix like washer fluid will give you about 114 octane with 91 AKI fuel, maybe an obvious question but will i get any performance decreases by “only” using the 93 file on meth? If so is the 104 map what I need to use and reserve the pulls for 104 and just use the spray in the 91 map for cooler temps? If that is the case, just using the 93 map is the goal for me because the car is my daily. I don’t like the responsibility of running the 104 map lol, so if there is a performance decrease by using 50/50 should I shoot more for 80/20? Just water injection? My other question is just in general what water meth actually does to the mechanic of fuel burning/combustion and how that reduces the amount of timing needed to pull, and how it will effect my performance directly outside of the much lower chance of detonation.
So I am running APR Stage 2 on a 91 file because that is all that is available in Arizona and I don’t want the E85 hassle. I just bought a snow stage 2 wmi kit because I like the increased reliability water meth gives in high ambient temps, and the performance bump you can get. My question is when I add program file switching to my tune to take advantage of the increased octane, I was initially planning on just running a 93 file and enjoying a good little bump in torque and power on the injection setup. I understand that a 50/50 water meth mix like washer fluid will give you about 114 octane with 91 AKI fuel, maybe an obvious question but will i get any performance decreases by “only” using the 93 file on meth? If so is the 104 map what I need to use and reserve the pulls for 104 and just use the spray in the 91 map for cooler temps? If that is the case, just using the 93 map is the goal for me because the car is my daily. I don’t like the responsibility of running the 104 map lol, so if there is a performance decrease by using 50/50 should I shoot more for 80/20? Just water injection? My other question is just in general what water meth actually does to the mechanic of fuel burning/combustion and how that reduces the amount of timing needed to pull, and how it will effect my performance directly outside of the much lower chance of detonation.