thoughts on aem eti vs stillen gen3

Originally Posted by SS_Firehawk

I have no issues with my AEM's. I think the ETI module works. There was no discernible difference between my untuned and tuned numbers. Car got tuned, dyno'd it in similar conditions as my original run and it was the same result. AFR's were within .3 of each other, 9 months apart, and at a different elevation (still a dynojet). I made decent gains on a modified car, but it was including pulleys. 16whp combined gains, I would guesstimate 8-10whp above 6500rpm came from the intakes. The intakes don't neck down at the MAF to "trick" the MAF readings, it stays the same diameter. I don't feel the intake location is a problem. It does not receive direct airflow, but it is not a sealed space, and I have not sucked up any water, even after washes or torrential rains. They come in polished or powder coated gunmetal for the same price and can usually be found for at least $100 cheaper than the G3's.

In my opinion, there is enough evidence to say that the difference after tuning between CAI's is minimal. Lastly, because the ETI modules are still functioning after tuning, the ECU is not going to try and revert what tuning changes were made to the AFR's. I don't know how much of an issue, if at all, but some cars do this on their own.