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Old 13-03-2011, 03:20 PM
keithmac keithmac is offline
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Join Date: Mar 2005
Location: York / UK
Posts: 151
Default Re: Running Pure Meth - Use UEGO as failsafe?

I used a Wideband AFR failsafe for my Methanol setup, it would cut boost if AFR leaned out over 12:1 afr while the system was injecting.

Because I was using mainly Methanol as the injectant it needed a failsafe, wether that was fast enough is debatable.

What Richard and Pete are trying to get across is a system based on a PWM valve is infinitely superior to one based on pump speed, I had an on-off system and it was a nightmare to map and get smooth transition into the injection phase.

With the PWM valve systems the ability of the system to accurately deliver/meter the flow makes the system easier to set up and tune for.

I`ve been using water, water meth and meth injection for probably 10 years on my own cars and never ever had a blocked jet..

Worth mentioning in winter if you go with staight water it would be benificial to add some methanol to prevent freezing, it also prevents any build up of bacteria/ algae that can cause sludge/ slime in the tank.
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