MSD BTM variants?, whats the diffrences? Options

[urbandork]

Whats the diffrences between the 6 btm and the regular btm. Is one older or soemthing? whats the better of the two? Dont they both do the same thing?

When doing my 5sfte project which one can/should i get?

[97sccelica]

97 you are TOTALLY worng about that when it come to celicas. the timing maps are already agressive in N/A form. when you start messing with fuel too, the BTM is basicly a MUST have.
you should really know more about it before you post, the WRX and celica are NOTHING alike...lol AT ALL
the btm is adjustable from 0 to 3 degrees of retard, and only does so at a point that YOU set.
urban, you dont need the msd6 thats a whole ignition unit.
like in your post in buyin/sellin, you need JUST the BTM pt#5462  and the tach adapter pt #8910eis
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so what do the timing maps look like?

i always thought they were tuned to the safe side, just like the fuel maps, kinda fits in with the whole economy engine scheme.

sorry if i gave bad information, but regardless of the car, tuning is tuning

Less fuel-More power-More Knock
More Fuel-(less power)Less Knock
More Ign. advance- more power-More Knock
Less Ign. advance-less power-less knock
More boost-more power-more knock
less boost-less power-less knock

too much timing can be remedied by adding more fuel.

whats the adjustment on a BTM? i know it can retard timing up to 3 degrees per pound of boost, but i guess you're saying it can be set to start at a certain PSI?

again, sorry if i gave out missinformation, but it was my opinion on it and what i thought would give better control over everything