100% Methanol = Rich Mixture ?

[sdminus]

Dont tune for 1 lambda on boost. I tune to around 0.95L cruising 0.80 on low boost and 0.78 on 15 psi. Your values will probobly be differant.

You will need a good AFR meter like the innovate LM-1. It will display lambda as well as afr. The meter works by measuring The Lambda value and then multipling it by the stoich of the fuel you have selected to display afr

so if the lambda shows

0.80 L and the meter is set to petrol the display will read 0.80 L and 11.76 AFR

But

if you were tuning Straight methanol and you had the meter still set to petrol the Lambda would still show 0.80 which would an actual 5.28 afr, even thought the meter would dispaly 11.76 afr .

You will need to aim for a set Lambda. Im not sure what value your engine will like but im sure somebody can tell you. If somebody can tell you what afr to run then divide that afr by 14.7 eg

11.76:1 (drop the :1)
11.76/14.7 = 0.80 Lambda

If you want to tune with afr then you will have to calculate a new stoich value for the fuel type. If you are adding methanol over the whole rev range it would be quite easy. Howeva if you only add the methanol on boost (creating a blended fuel) You will not be able to do this (Basically it would be the same as running 2 differant fuels. 1 for cruising and another for boosting) stick with tuning to lambda.

try this forum for more guidance and reasearch.

http://www.innovatemotorsports.com/forums/index.php

This is the company whos forum is above but they make the Meter Innovate LM-1
http://www.innovatemotorsports.com

Scott


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