Engine Swap and Tuning on a 1990 Bonneville LE
#33
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Originally Posted by BonneMeMN
Does that ROM software/hardware have the ability to modify 93 style EPROMs.
The way the software and it'* support is done is by the family of ecm, not by any particular model year. If the ECM on your car isn't listed, it is possible to switch to a similar one that is.
As to the hardware end of it, it'* the same. They use a 27C512 EPROM, but all the burners show thus far are capable of reading and burning those chips, they are an industry standard too.
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Originally Posted by Bonneville94V688
What'* the update? Is the LN3 being pulled yet?
Once the '87 Camaro is roadworthy again, I'll pull the motor on the Bonneville. The '94 can wait a little longer, since it needs some major items.
I've only got a few weekends of work to do on the '87 Camaro. Some excess wiring removal, which I got partway through this past weekend, new T-top seals and door gaskets to button it back up again. Car is not in as bad shape as I thought...though chemical warfare was needed to kill off the wasps and spiders in it.
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Originally Posted by theprodigalstranger
Any Updates?
I hope to pick this thread back up in a few weeks time. As soon as the '87 is back to flight ready status, the Bonneville get'* it'* new motor. (the current one just passed the 76k mark...not bad, 50k miles in a years use.)
#39
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Don't have to even break out a soldering iron. Simple. I remember the ROM in my 84 buick wasn't even that difficult...
27256'* are easy to get, too.
27256'* are easy to get, too.
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Originally Posted by Doppleganger
Don't have to even break out a soldering iron. Simple. I remember the ROM in my 84 buick wasn't even that difficult...
Like this TBI Computer (Type 747) that I modified to hold the calibrator in a ZIF socket:
Note: For folks with older Bonnevilles that want to go to Fuel Injection without a lot of issues, this is the way to go. You could spend a $1500 to $2000 on a aftermarket Holley or Edlebrock EFI system, but you are not going to get anything better than the classic GM TBI system...which you can cobble together and tune for about $200.
BTW...the software to edit the calibrator prom is FREE...the Demo version of TunerCat works on this style of TBI computer. Just download it and have fun.