Roh92cp
Well-Known Member
- Joined
- Jun 27, 2015
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- 79
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- Location
- Fort Kent Maine
- First Name
- Shawn
- Vehicle(s)
- OW GTPP Whipple
Questions:I'm not calling you a liar. I'm saying your data is incorrect. What you're describing is absolutely impossible. There is no way your IAT's are that low, end of story.
There have been issues with the IAT transfer function on the S550's. We discovered them while doing development on our S550. To nail down exactly what was going on we bought and installed two stand alone IAT sensors/gauges so we could check them against what the car's ECU was telling us. The cars ECU was wrong, way wrong. Lund did some voodoo and got the IAT's to read closer, but they never got to the point where they matched the two independent stand alone sensors/gauges.
Based on the fact that the IAT's you're seeing are mathematically impossible under your conditions and that it's a fact that there are IAT sampling issues with the S550 one can only draw the conclusion that what you're seeing isn't accurate.
I'm sorry to disappoint.
1. The stock AIT sensor location in the MAF will never see post blower temps on the PD setups, but will on centi and turbos. Are you saying the MAF location AIT and stock transfer function is wrong and doesn't report actual temps?
2. With positive displacement setups the MAF location is always pre blower inlet side so these kits add another AIT in the manifold which samples post blower right. In these cases they tap into the IMRC plug and then program the post AIT sensors transfer function correct. Are you saying these transfer function are wrong and reporting incorrect data to the PCM.
3. In your testing with the new AIT sensors you added what is the difference between PCM post blower AIT's and the new ones you added?
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