8th Generation Honda Civic Forum - View Single Post

el_ache_veintidos · 10-12-2007, 12:51 AM

Well guys I originally have the injen CAI in my car and it feels ok, but not to much difference vs the stock air box. Then I start following the xfactorwrx progress and start making some testing with the stock air box on my own. First I cut the maf housing from the air box and put a BLOX velocity stack+filter (BPi velocity stack knock off) with the stock intake tube. Low end got a lot better with some mid range gains, just like xfactorwrx prove.

Then I start modding the maf housing with my own ideas and I was able to feel a lot of improvement on the top end (I have no proof that I got it right but at least it feels better than before the modification) but heat soak was a big problem here in Puerto Rico, even with a custom ram air that take air from below the bumper. Also I was starting to think that the stock intake tube was a little bit crappy and top end was being affected (the crv tube that x’ uses could/should be better).

So I have the injen cai still laying around and I remember someone here saying "what if you put the modded maf in the injen cai" so I decide to take the chance and test it. The results simply were impressive. I HAVE NO DYNO GRAPHS and probably won't be getting them neither, but the car pulls harder than ever all across the power band with no hesitation or idle wandering or any other problem normally associated with the Injen CAI. I think is a great improvement on the stock Injen design and “feels” better on the top end than with the stock tube, modded maf and filter (short ram-type arrangement) I had before and I could guarantee no one will regret doing it.

I hope someone with the ability to dyno this will do it in the future and show the gains. I would at least verify the af ratio with my wideband sometime next week when I have some spare time and compare it to the injen without modification and vs the stock tube-filter on the maf short ram I earlier have (similar to x’ design but without the crv tube and my custom modded maf) Thanks X' to encourage us to make our own testing/developments!!!

Here are some pics:

10-12-2007, 12:51 AM	#1 (permalink)
el_ache_veintidos Senior Member Join Date: Apr 2007 Posts: 109 iTrader: 0 / 0%	Modded MAF + Injen CAI Well guys I originally have the injen CAI in my car and it feels ok, but not to much difference vs the stock air box. Then I start following the xfactorwrx progress and start making some testing with the stock air box on my own. First I cut the maf housing from the air box and put a BLOX velocity stack+filter (BPi velocity stack knock off) with the stock intake tube. Low end got a lot better with some mid range gains, just like xfactorwrx prove. Then I start modding the maf housing with my own ideas and I was able to feel a lot of improvement on the top end (I have no proof that I got it right but at least it feels better than before the modification) but heat soak was a big problem here in Puerto Rico, even with a custom ram air that take air from below the bumper. Also I was starting to think that the stock intake tube was a little bit crappy and top end was being affected (the crv tube that x’ uses could/should be better). So I have the injen cai still laying around and I remember someone here saying "what if you put the modded maf in the injen cai" so I decide to take the chance and test it. The results simply were impressive. I HAVE NO DYNO GRAPHS and probably won't be getting them neither, but the car pulls harder than ever all across the power band with no hesitation or idle wandering or any other problem normally associated with the Injen CAI. I think is a great improvement on the stock Injen design and “feels” better on the top end than with the stock tube, modded maf and filter (short ram-type arrangement) I had before and I could guarantee no one will regret doing it. I hope someone with the ability to dyno this will do it in the future and show the gains. I would at least verify the af ratio with my wideband sometime next week when I have some spare time and compare it to the injen without modification and vs the stock tube-filter on the maf short ram I earlier have (similar to x’ design but without the crv tube and my custom modded maf) Thanks X' to encourage us to make our own testing/developments!!! Here are some pics: