Tuning with an SMIM

[kidtsi]

I want opinions on different ways to tune to compensate the extra flow of cylinder #1 on our motor while running and aftermarket intake manifold like the JMF/MAGNUS with DSMLINK or any non ajustable per cylinder ems.

I'm runing e85 and the air/fuel ratio for a deadon tune is 12.8 according to some tuners and if i can't compensate fuel per cylinder what would be the best way to do it?
Tune for 12.2 air/fuel ratio and that way the #1 cylinder would be arount 12.7 or 12.8 and don't run too lean and burn a hole on the piston or any other damage? and all the other would be at around 12.2 which is not too rich etheir.

Any feedback appreciated.

 

[bastarddsm]

Just run it a little richer, you won't lose any noticeable power from that. From what I can recall, only the old style magnus is really bad with flow distribution. All the newer stuff should be better.

FWIW, I have a home made smim on my car, its just a 4" tube plenum, and I have not noticied any cylinder being significantly leaner than the others. This is just from reading plugs often however.

 

[Hal]

I want opinions on different ways to tune to compensate the extra flow of cylinder #1 on our motor while running and aftermarket intake manifold like the JMF/MAGNUS with DSMLINK or any non ajustable per cylinder ems

Unless you KNOW you have an unequal distribution issue then you shouldn't even worry about it.

You don't see any posts about motors melting down after SMIM installs do you?

12.8 is too lean for full throttle with E85 (in my opinion)

Hal