VE Tables Fuel Tables Maps Igniton Spark
John Hess
johnhess at cris.com
Sun Feb 8 05:04:19 GMT 1998
The VE discussions are great; but, can anyone tell me where they are in an
'89 Corvette map?
At 10:38 AM 2/7/98 PST, you wrote:
>Well now that we're dun tuning we can all find a Mexican
>restuarant and contribute to the methane problem, right.
>Well ya if ya want, but there are just a few closing notes
>I got..
> I have not read anything that says you can't run vaccum
>referenced fuel pressure regulators with TBIs, the pressure
>variance is usually too much, but if you run a second
>fuel pressure regulator, you can trim this variance. This
>is the only way out of not being tune the acclerator pump
>features of TBI, since no commercial program I've heard of
>allows ya to do this, however once you have things rather
>close you can try other chips from other applications,
>and put your tables on them. If ya remember from the
>good old days, a big block always took more acclerator
>pump than a small block (hint).
> The you can try adding timing to the spark table, and
>remove a similiar amount from the WOT spark addition.
> The same with the fuel table, and WOT enrichment.
> When you start getting close, change only one thing
>at a time, one thing only, Move two and things might
>seem fine but then 2 moves later everything takes a
>dodo.
> One of the easiest errors is make is use too much
>air filter, actually the problem is getting the air to
>organize to flow thru the throttle body, Having
>several hundred square inches of filtering surface area
>if fine, but having a huge volume of air sitting on
>top of the butterflies, can have it's down sides. IE
>when the throttles snap open, it takes/can take a
>huge acclerator pump shoot to cover the delay in
>this column of air to get moving. If your using an
>open element filter than I suggest doing this.
> Assemble the air cleaner housing, and element
>as it would sit in the air horn. Measure the distance
>from the sealing ring portion to the lid, any thing
>more than an inch is too much in my book, and from
>my testing, I have several cases to prove this.
>Go to the hobby shop (say you had 3 1/4" dimension)
>Lets also say the air filter sealing ring was 5" in diam.
>You'll need enough thin brass to make two rings
>Which 3" wide, and about 16" long. To make a tube
>5" in diam, and 2 1/2" tall. The reason I say two is
>you have to experiment, on the height, and that means
>going too far, and that will ruin the first one. I have't
>found getting more than 1/4" close as necessary.
> HTH Bruce Anyone have any tuning questions
> e-mail me, and I'll see if I got any notes
> to write about.
> DO NOT use staples for cone shaped
> hat retension, unless helping someone
> else with their hat
>
>
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