86 tpi mods.

Mark Romans romans at pacbell.net
Sat May 3 04:50:04 GMT 1997


John Hess wrote:
> 
> OK, Fred.
> 
> For what it's worth, many people have been begging for information on
> the location of the various items in the map for months, now.  No one
> has yet been able to provide it.  If you have it, the information
> would (I know) be greatly appreciated by all.  I would LOVE to be able
> to change the idle speed on my 'Vette (to accomodate the cam and
> intake);  but, have no idea where the map info is located and don't
> want to spend the $2500 or so for the only commercial package that I
> know that will accomodate my desires.  The only known alternative for
> me (at this time) is to copy my ROM to a file and send it off to
> someone (for $350 or so) and let them do it.
> 
> Bye the way, the 'Vette is an '86 with some pretty severe mods and an
> '89 chip (to get rid of the cold enrichment injector).  The only
> problem I am currently experiencing is idle problems at start and at
> rapid throttle closure.
 

TPIS has an internet site. Go to their garage sale area and see if they
have a used memcal for your application. If they do it's $100.00. If
they don't its $450 or so for a level 5, customized to your application. 
By the way, what are the specs on your cam? What intake setup? Any head
work and how does it run? 

Also Z-tech industries (Who advertises occasionally) does custom chips.
I don't know how much they charge. I have a level 4 chip from tpis for
an 87 automatic but it doesn't work too well with my 4+3 manual. It does
have an idle speed of 800rpm instead of the stock 700. (requested rpm
according to tech1 scan tool). Mark.



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