[DML] Re: Bolt On Performance.
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[DML] Re: Bolt On Performance.

General Motors (didn't John DeLorean darken their hallways from time
to time?) pioneered HEI in the 1970's. Became their default ignition.
Every vehicle that rolled out of Flint MI burned high voltage
inductive ignition until capacitive ignition took over in the mid
1980's. Surely General Motors generated some sort of data to make that

Bill Robertson

>--- In dmcnews@xxxxxxxxxxxxxxx, mike.griese@... wrote:
> My problem with all of these "performance improvements" is that 
> there is never any data to back them up.  If these things really are
> an improvement - prove it.  Put a standard, freshly tuned up car on 
> a dyno for a baseline run.  Then make One Change and put the car 
> back on the dyno and measure the difference.  Then put the old parts 
> back on and put the car back on the dyno.  The first and third runs
> should match, the middle run shows the improvement.  
> Dave is right - you can't evaluate any new part as a performance 
> improvement unless the part being replaced is running at it's optimum
> specification.  It's like replacing a 25 year old, flat bald tire 
> with a brand new properly inflated tire and claiming that it's 
> an absolute performance improvement over the original spec tire.
> You aren't comparing to an original spec tire - you are comparing 
> to a 25 year old, flat bald tire.
> Until there are measurements, it's all snake oil.
> --
> Mike

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