IAT Temp Comp Was:The Original 355 took a hit.

[Scot Sealander]

Bruce Plecan wrote:

Dave Zug wrote:

> > PS (Thanks, I'll stop thrashing my car in 20 degrees now - you may have
> > just saved me $4k)

> Just back the timing up a few degrees.
> I peeked at some gm S/C MAT tables and they danced the timing around 10
> degrees from cold to hot vs Airflow.

The SC uses less compensation for air temp than the NA, in the two 
files I have.

 
> I think, I'm going to use something like
> 50-70dF as being the 0 correction area,
> Then 70-90 add 2
> 100+ a total of 3
> 30-50dF  2 less
> single digit to 30s 4 less
> there I said it <g>

If you mean by less, less advance, and add 2, adding 2 degrees of 
advance, that is moving in the opposite of the just mentioned GM tables.
They use more advance at lower air temps.

 
> So far, both the GN and SBC seem to like this, though, haven't had any
> traction for testing in the lower temps., thou the plugs bare this out.

Can't argue with that.  :-)

Scot Sealander

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