Car has driveability problem

[CSH-HQ]

Depending on chamber AL heads like the D port vettes can use more criuse 
timing, and less at WOT.
  MAF somewhat forgiving for min cam changes, but I'd figure on some time 
tuning.  Might get a copy of tuning docs from FTP

Bruce
>
>	First off, thanks to all of you for your suggestions.  Every
>observation gives me some place from which to begin hunting down the
>cause(s).
>
>	I thought about using the 89 Corvette 6-spd cal before, but I
>thought there may be too many minute differences that may end up giving me
>more problems to chase.  But, when other suggestions of doing this came up
>here, especially from Mr. Fenske, I think I may try this out and see what
>happens.  After all, if it is worse, I can just use my old calpak.
>
>	A few more questions surface, though.  Will the changes in engine
>components (aluminum heads, different cam, for example) change the
>timing values in the ROM too drastically as compared to my stock Camaro
>iron head equipped ROM?  Any more things I should worry about there?
>
>	The other question comes from attempting to burn a new ROM.  Is
>there a special type of burner that I can get to burn these new values,
>and where can I get the blank calpaks?
>
>	Thanks,
>
>	DK
>	
>
>On Thu, 12 Aug 1999, Peter Fenske wrote:
>
>> 
>> 
>> 
>> Hi Dan
>> 
>> (    I have an 86 Camaro w/ 89 Camaro 5.7LTPI (Basch MAF type).  The
>> )prom is set up for an A4, but I now am running a 96 T-56 six speed (manual.
>> 
>> Dan, You realize you can simply burn a 89 6spd corvette cal into
>> your calpak. This would prob save you a ton of probs.
>> 
>> With using a 89 tpi, I believe you lost the cold start injector
>> witch the 86 cal requires for good start up..You should go
>> to a 89 cal..
>> 
>> With the Vss is it connected. I would believe a T56 might
>> not use a 4 pole sensor. Prob a 30 tooth type setup.
>> If not the VSS code can be taken outa the code bit enable
>> table.. Lots of tuners do this for some reason or another.
>> You may have to use a drac and feed the ecm 4 pole input
>> through a cap to simulate the A.C signal.
>> 
>> (    The engine, especially when cold, will tend to choke, stagger,
>> :stall at low RPM, and I have had a hard time getting it to idle )properly
>> >when first starting in the morning.
>> 
>> 
>> Maf low code. Check for 0.5 v at idle at Maf output. There is
>> a error table which sets this in the code. Could be a 89 Maf
>> confusing a 86 cal table. I have personnaly never seen this.
>> 
>> 
>>      The only codes I have gotten (both intermittent) are code 33 (MAF
>> low) and code 24 (VSS).  I can't pinpoint anything, so I was wondering if
>> anyone has insight into this....perhaps suggestions on improving the setup
>> with a proper BIN?
>> 
>> Anyways try a 89 cal, Dan
>> 
>> gl:peter
>> 
>> 
>> 
>