Custom tuning

TBK terryk at foothill.net
Mon Jul 20 04:24:49 GMT 1998


Come on.... What Vette will actually go 132!??  :^)

-----Original Message-----
From: Mark Romans <romans at pacbell.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Sunday, July 19, 1998 9:21 PM
Subject: Re: Custom tuning


>In the last week there were some posts about buying used tech1's on the
Team
>zr1 web page.  I'll check and let you know. New one's are about $1400.00 (I
>think).  I'll check on that too>
>
>BTW...  Just use rpm,  lv8 and spark vs tdc and knock retard and the math
>actually works.  You can find where the ecm is looking at on the spark map,
>subtract the deg removed due to knock (If any) and voila!  It's right where
>it should be.  So I took the car out,  (On number 6 trip by now) out to the
>top secret test area (Industrial blvd) and put the car in 4th, slow to
about
>700 rpm's, hit the ol space bar on the diacom and floor it!  All the way to
>132 mph!,  Brake like hell so I don't die!  Damn road's rough!  Go home
>transcribe data,  see what needs to be done to map and then test again!  I
>just don't want to see the number of degrees of knock retard maxed out.
>What is really interesting is the screwy lookin part of the map in the top
>right,  well the car actually runs there at low rpm's and wot!  I have
>pulled out spark there like crazy.  Also expanded the section of 20 deg
>advance in the idle area and it idle's at 20 initial now!  Better all the
>time!  And all this with the outside air temp at 109f,  if it doesn't knock
>now it never will!  With ac off coolant temp would get down to about
199-206
>deg range.
>
>Let me know on the cd for peter when you want it and where.
>
>Mark
>
>
>
>
>-----Original Message-----
>From: TBK <terryk at foothill.net>
>To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
>Date: Saturday, July 18, 1998 11:42 PM
>Subject: Re: Custom tuning
>
>
>>Just how much are Tech I's?
>>
>>Tk
>>-----Original Message-----
>>From: Terry <thartman at gte.net>
>>To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
>>Date: Saturday, July 18, 1998 9:23 PM
>>Subject: Re: Custom tuning
>>
>>
>>>TWong29770 at aol.com wrote:
>>>>
>>>> Has anyone on the list had any experience with custom tuning of a late
>>model
>>>> OBD2 GM VCM/PCM from TTS or more commonly The Turbo Shop in Los Angeles
>>CA?  I
>>>> talked to the owner and he seems pretty knowledgable, and susposidly he
>>has a
>>>> chassis dyno on sight for his tuning calibrations?
>>>
>>>Steve Cole is good IMHO.  I have heard that Mike Licht of Modern
Musclecar
>>>can also program the latemodels (I have no experienece with either so
>>>I can't personally make a recommendation)
>>>
>>>> My Diacom plus can't even access
>>>> the data stream and the only way I can diagnois problems is with a
>>barrowed
>>>> Tech2 from a friends dealership.
>>>>
>>>> Tom Wong
>>>
>>>Try these URLs.  I know you don't really wanna invest in yet another
>>>scan tool - but it would appear that Rinda is really dragging their
>>>feet (so to speak) on updating Diacom with the OBD-2 specs...
>>>
>>>http://www.obdii.com/autotap.html
>>>
>>>http://www.easesim.com/products.htm   (this one is NOT CHEAP!!!)
>>>
>>>hope this helps,
>>>
>>>T.
>>>
>>
>
>




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