Re: alpha N vs MAF

[poffen@xxxxxxxxxxxxxxxxxxxx (Russ Poffenberger)]

> Date: Thu, 24 Sep 1998 14:11:19 -0400
> From: albert jenab <jenab@domain.elided>
> Subject: RE: alpha N vs MAF (long)

[stuff deleted]

> I don't think anybody in their right mind would claim that such a system would
> outperform a purpose-designed chip which had used a high-priced O2 sensor to
> calibrate for a fixed set of mods.  But is it utterly unreasonable to expect
> improved performance, or is this also total BS? 

The only comment I will make is the where the performance (if any) may come in.
The idea bbehind the Split Second system is to replace the stock flapper style
AFM with a free flowing MAF sensor. In a stock engine, this may not help too
much. But in some applications (like my bored/stroked 325i-2.9), the stock AFM
is probably the biggest restriction in the intake system.

At 6900 RPM (new redline), I calculated that my 2.9l M20 wants 30% more air flow
over the stock setup.


- --
Russ Poffenberger               Engineering Specialist
Schlumberger Technologies ATE   DOMAIN: poffen@domain.elided
1601 Technology Drive		CIS:	72401,276
San Jose, Ca. 95110             Voice: (408)437-5254  FAX: (408)437-5246

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