I'm running Dominator EFI with the Holley meth injection solenoid that basically acts as an injector. It can flow up to 1,000 CC. I can tune my injection system to run as a percentage of total fuel flow. I'm finding all kinds of conflicting info on the internet about how much meth to run. Some say 5% of total fuel flow, and others say 15-20%. How would the tuners of pt.net set up the meth injection tables? I plan to run a 50/50 mix for cooling purposes. My Kenne Bell IAT can go from 100* to 170+ in about 4 seconds! I'm pushing around 12 lbs boost on this setup and typically shift between 7,000 and 7,200. Here is the H2O/M tables that Holley software offers. I can also scale the x and y axis any way I need.

 

Drown that bitch!

 

the internets suggest that too much will kill power. Some suggest as low as 5% total fuel flow, some 10-15, some 15-20...all of them have arguments in favor of their method. Some start spraying at 1lb boost, others won't start spraying until 15# and both claim that the opposite method kills power. I know there will be some trial and error to figure out what my combo needs, but a solid starting point would be nice. octane isn't as big of a concern as cooling this furnace down.

also on drowning it, i've heard mixed results on running meth through the intercooler of a blower. it seems like drowning it might cause cylinder to cylinder distribution issues.

 

You won’t loose power if running 100% meth, ramp it in with boost and rpm. Personally based on your setup I would start it at like 5psi.

if running 50/50 then too much will loose power.

 

I'm new to this, so bear with me. this is a quote from Rodney at ProMeth.



this is why i decided on the 50/50 mix. my ring gap is only .019 so if i can cool the intake charge and combustion chamber it seems like a win/win. I think the quote is also 5 years old so maybe more has been learned since then.

 

I agree with that, but water doesn’t burn so there is a point where it becomes to much. FYI, with my blower I tested all different mixes. 66/33 Meth/water worked the best for me. On the turbo I run 100% as IATS aren’t a issue.

 

that's the kind of info i'm looking for! What happens if i run 65/35 meth/water? LOL. Do you happen to have the data of % of fuel flow you were injecting with your blower?

 

don’t over complicate it. I mixed two gallons of meth with one gallon of water. Thus the 66/33

simple answer- no

i was running 1x10gph nozzle and 1x5gph at like 75% on a Alky kit.

 

Be careful,

Too much and you’ll hydrolock the engine and when that happens, you're pulling it.

 

Where were you 10 minutes ago? WTB new bullet.