I've heard TBE's allows higher turbo boost, and if you aren't providing more fuel, and adjusting the timing through EM, the engine will run lean and boost spiking will occur. Can't that really hurt the engine?
Yes, in regards to the intake. I was thinking the same thing at first, it causes lean AF ratio. But I'm not getting any CEL on that, and I've read in several places that the SPT intakes do not interfere with MAF.
I'm asking all this because I've read so much conflicting information on both these issues.
I do have a CEL related to my cats.