I haven't been able to pull fault codes for some time now. I guessed MAF sensor because it didn't go into limp mode when it was unplugged. Likely assumption if you can't get codes.. before frequent limp mode I could pull codes. I have replaced the ICV (I had a p1500 code) and the MAF. All intake boots are good, TB plate moves well, although has resistance on it, but never gets caught up or stuck. I assumed this was normal.
So, something that puts you in limp mode AND stops you from pulling diagnostic codes. I'm thinking ECU... DME problem?
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Koni STR.T, poly RTABs, headers, SSK.
Three Pedals, ZSP.