from reading figgie's post on it. it sounds like you can just change the mapping to run gas or alchy.
Alternatively fueled supras
- Thread starter figgie
- Start date
if the Maft-pro supports map changes then yes. It would be that simple (of course that requires a TON of dyno tuning hours).
Adjuster
Supramania Contributor
Actually, on Maft-Pro, you should just be able to change AF needs, and let your WB do the tune based on what fuel your running right? (The stock NB would be screwed, but most WB setups give you the right range for either fuel, you just need to know what AF to run for no load, medium load and WOT load for each fuel.)
Well, and change over to parts that support the fuel and flow the amounts needed.... (For me, right now, Costco 91 octane at less than 3.00 per gal is ok as long as it's mixed with the 114octane Toulene I bought for about 1.30 a gallon years ago in 55gal drums... ) I run about 20% all the time, and go as much as 40% when taking the car to the dyno or drags where I might be tempted to turn up the boost more
20% toulene handles boost to about 25psi pretty well.
40% handles boost above 25
Well, and change over to parts that support the fuel and flow the amounts needed.... (For me, right now, Costco 91 octane at less than 3.00 per gal is ok as long as it's mixed with the 114octane Toulene I bought for about 1.30 a gallon years ago in 55gal drums... ) I run about 20% all the time, and go as much as 40% when taking the car to the dyno or drags where I might be tempted to turn up the boost more
20% toulene handles boost to about 25psi pretty well.
40% handles boost above 25
Adjuster said:Actually, on Maft-Pro, you should just be able to change AF needs, and let your WB do the tune based on what fuel your running right? (The stock NB would be screwed, but most WB setups give you the right range for either fuel, you just need to know what AF to run for no load, medium load and WOT load for each fuel.)
Well, and change over to parts that support the fuel and flow the amounts needed.... (For me, right now, Costco 91 octane at less than 3.00 per gal is ok as long as it's mixed with the 114octane Toulene I bought for about 1.30 a gallon years ago in 55gal drums... ) I run about 20% all the time, and go as much as 40% when taking the car to the dyno or drags where I might be tempted to turn up the boost more
20% toulene handles boost to about 25psi pretty well.
40% handles boost above 25
actually here is the neat part (this might get confusing so bare with me)
since the Widebands read Lambda and translate to AFR. Lambda = 1 at stioch regardless of fuel. Meaning Ethanol, Propane, diesel all read lambda = 1 at their stioch value. What this means is that on a Gasoline AFR scale, you can tune to the gasoline stioch level of 14.67 and be perfectly at stioch regardless of fuel. Though here is the catch, I would not give the maft-pro that much authority over the fuel enrichment as it has to pump in about 25% more fuel and 25% is alot if the wideband reads wrong.
yeah that makes sense. i would want to tune it. atleast for the first time to make sure where everything should be set at. i havent got ahold of a maft-pro yet to see what it is capable of yet, but i agree on not just letting it do it on its own.