So many questions... we need a fuel expert to chime in here lol

 

its not that serious, you will need a dyno to measure any changes

 

Back road, cordless drill, hack saw blade , and a few sets of spark plugs.

 

Yea plug reading is your best option when mixing fuels but how serious do you guys want to get.

Like what? Atomic and Smokeshow seem pretty fluent with boost, fuel, and tuning so maybe they will chime in soon. I know smokeshow runs a ethanol blend in his truck and atomic runs a lot of meth.

I'm sure they are both watching this thread waiting for someone to say something stupid or something they don't agree with.

 

How did you know?

To answer the question about adjusting your actual lambda with different fuels, see here:

FUELS DATA

Air / Fuel Ratios for a Wideband Oxygen Sensor - Hot Rod Magazine

The only thing complicating it is calculating the amount of methanol you're injecting when the PCM isn't aware of the additional fuel. When you inject enough methanol that you have to reduce fueling in the tune, you can use that reduction value to figure the amount injected by your meth kit. Then calculate the percentage of methanol you're running and adjust target lambda as necessary.

 

Yep Yep Yep

 

correct me if im wrong but 1.0 lambda is 14.68. I read lambda on HPT scanner but my wideband still is reading AFR

my truck cruises around .99-1.01 lamba via my scanner and on my wideband in afr is like 14.4-15.2 or so

 

The AFR for stoich (lambda 1) depends on the type of fuel. Stoich on e85 is 9.76 and I shoot for 7.1:1 at WOT.

 

Yes on the gas scale

 

Thank you, this is EXACTLY what I was looking for. Meth runs at a much richer lambda for max power, hence why we need a lower displayed AFR on the wideband. this will help me make a ton of sense out of what I'm doing before I just stick my finger in the air and take a stab at it