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Hey everyone. I recently installed a topend kit, and fast 92 intake along with an ls2 tb with an adapter. Tomorrow is supposed to be dyno tune day but I just had the dreaded p1120 and p1220 codes come up. The adapter and tb are of unknown origins as they came with the slightly used fast intake I bought. Car starts and runs. Any insight on where to start first?
It's quarter to 4am so forgive me for not looking up the codes. I'm going to just guess that the TB signal voltage is out of range right?
The tuner will adapt for that. I forget the specifics but I think it is along the lines of having to set the LS2 where 100% signal command equals 97% butterfly movement. But that is an ooooooold memory. It's entirely doable.
Ls1 to ls2 throttle body
