year of pcm to use for conversion
IIRC, EFILive does not support the 98, but HP tuners does. My car has been tuned without any problems. The 98's are not the most desireable for a lot of little tings that were changed/improved in 99, but they are generally the cheapest.
Originally Posted by Brains
EFILive not only supports the 98, but supports them for FREE 
99+ is more valuable to you if going boosted, otherwise not much of a difference for most folks.
99+ is more valuable to you if going boosted, otherwise not much of a difference for most folks.
I think that is pretty recent, but I stand corrected.
I don't see how the 98 is more expensive with HP Tuners, but I could be wrong.
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Originally Posted by Brains
EFILive not only supports the 98, but supports them for FREE
99+ is more valuable to you if going boosted, otherwise not much of a difference for most folks.
99+ is more valuable to you if going boosted, otherwise not much of a difference for most folks.
98 harnesses and PCMs are the cheapest out of all the years I've seen. You can't probably buy them both for around 4-500 on ebay.
-Alex
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98 pcms are more expensive, since they are more rare, and are required for the original ls1 conversion harnesses.
EFI live supports them for free, but you need to have access to a EFI live cable to do so. .
Ryan
EFI live supports them for free, but you need to have access to a EFI live cable to do so. .
Ryan
Is it possible to swap a 99+ ecm onto an otherwise stock 98 LS1? I'm thinking about buying a complete 98 LS1 (engine, trans, harness, ecm) and want to put a newer ECM on it. Will it work?
