for those who have both mods, how is your real life mpg??? i understand that both mods will lean out the mixture, but will it be enough to increase mpg? thanks!!!

 

I had a K&N with a Hondata for a short time. No real economy benefit. The Hondata really only makes the RDX run slightly less rich under boost, so in order to "save" fuel over stock, you have to be driving reasonably aggressive still.

I believe the CP-E just uses a slightly larger MAF housing so the meter thinks it's metering slightly less air than it really is - so this might help a bit - but I'm sure all the other electronics will keep it an 14.7:1 under most conditions anyways.

 

i doubt that the stock ecu will try and aim for 14.7 afr... considering the piss poor mpg, im sure its on the rich side

 

There is simply not point to running rich under light throttle and cruising conditions. I've taken cars that were really bad on gas (Subaru Forester) and they ran a perfect 14.7:1 under idle, cruising and light throttle conditions.

 

I have both Mods and am averaging 20-22 mpg depending on my driving mood. Comparatively, before the Hondata, I was running about 17-18 mpg. That includes mix driving.

On long trips, I have been able to get 23.5-24 mpg out of the RDX with the mods on. That's going 80mph on the highway. Just depends on how you drive it! Hope that helps!