Vortex Generators / Hmmm Airtabs

[ZugyNA]

Just got them on there...and am also testing other things...like the FA2000...so no mpg results.

The Mitsu research says that a spacing of 4" is ideal...mine are spaced 3" and 4.5"...Mitsu has 8 vgs...I have 10. Ideal for that car was 4" back from the "break"...mine are 3" back. I was planning on using 7 of them instead of 5.

I can't do the research they did...but I can generally duplicate what they say is ideal. I think they compromized for production by putting them too far back.

Though as they say..."The VGs are not highly sensitive to these parameters and their optimum value ranges are wide."

I made some previously pretty much exactly the same dismensions they used...but the doublesided tape wouldn't hold in the rain. Didn't test for flow. Didn't put them back on because of the very low reduction in CD they mention.

Sounds like IDEAL would be 4" back...spaced 4"...none at the edges....angled 15* to the tested flow...they say 1" high vgs are OK. Theirs were 2" long.

[zpiloto]

Nice job. I tried a FA 2000 knockoff that I manufactored myself with no luck. Do you have an EFIE on your O2 sensor? Without it I don't think you'll have much luck with the ECU making adjustments.

[ZugyNA]

Yep...got an EFIE. Somehow the FA2000 was set back to a lower setting where no gas was flowing...either somebody was messing with it...or I'm getting careless...but testing goes on.

Have had a problem with liquid gas building up under some conditions...got that solved by adding an extra PCV jar to catch it.