Modded MAF + Injen CAI

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:

fatality122887 · 10-12-2007, 12:58 AM

so what is this one person dose it so everyone has got 2 try 2 coustomize a maf? i mean i'm all for being an individual but why would u spend 300$ on an intake to cut it up and also **** up your stock air box? makes no sence 2 me but if you wana do it its your money. More power 2 you man and hope you are happy with your creation

el_ache_veintidos · 10-12-2007, 01:08 AM

I have the Injen laying around so cutting it wasn't a big deal for me. And honestly, the injen reduction on the maf "housing" is simply a piece of **** that was underdeveloped to simply try to get the maf read right and they fail miserably on it. Before this mod, the cars ALWAYS runs very rich, about 12.0-12.5:1 on almost all the power band until it reaches about 7700 when it get even worst and drop to mid 11. I know that now it is reading more accurately and don't have the 2.75" bottle neck on the middle of the pipe. Now it is a true full 3" CAI.

KidnKorner · 10-12-2007, 02:24 AM

Butt dyno tuning at its finest

el_ache_veintidos · 10-12-2007, 02:34 AM

I already said it, someone please make a dyno before and after. Right now I don't have any dynos near of me, but I will try to make some time in the near future to test this against the stock air box in the dyno.

07mugencivic · 10-12-2007, 02:36 AM

ill try it

***Excalibur*** · 10-12-2007, 02:48 AM

Thanks for supplying us with pictures that shows the public how what modifying the maf housing really means. +1 rep for you. However, I'm kinda disappointed there were no dynos. I think you would have been alot happier along with the community if you would have dyno'd.

On a sidenote; I think someone that gets a cel from their injen cai should try this and see if it remedies the problem.

Whocares05050 · 10-12-2007, 02:51 AM

Interesting

el_ache_veintidos · 10-12-2007, 02:55 AM

nearest dyno facility it's about 2+ hours from here and I don't have to much spare time, but I want to know how much this mod will gain so I'll try to make some time in the coming weeks. Lets see what happens.

***Excalibur*** · 10-12-2007, 02:58 AM

Quote:

Originally Posted by el_ache_veintidos

nearest dyno facility it's about 2+ hours from here and I don't have to much spare time, but I want to know how much this mod will gain so I'll try to make some time in the coming weeks. Lets see what happens.

It's too bad you couldn't do one stock, then one with the injen and then one with the modified injen.

***mike_si_29*** · 10-12-2007, 03:06 AM

Nice work man

... i have injen CAI too and wondering how many hp you gained.

xfactorwrx · 10-12-2007, 01:27 PM

lol, nice work man, but the way you modded the MAF is going to make you run RICH!!! maybe not as much as the injen but still richer than stock. nice try though. im going to post pics of the MAF tonight. cheers!

***Excalibur*** · 10-12-2007, 01:35 PM

Quote:

Originally Posted by xfactorwrx

lol, nice work man, but the way you modded the MAF is going to make you run RICH!!! maybe not as much as the injen but still richer than stock. nice try though. im going to post pics of the MAF tonight. cheers!

Woohoo. Thanks!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !

GreySi07 · 10-12-2007, 01:41 PM

Excalibir you read my mind.

el_ache_veintidos · 10-12-2007, 03:03 PM

Quote:

Originally Posted by xfactorwrx

lol, nice work man, but the way you modded the MAF is going to make you run RICH!!! maybe not as much as the injen but still richer than stock. nice try though. im going to post pics of the MAF tonight. cheers!

Well maybe it's running richer, but at least it runs great on the injen comparing vs the stock injen piece. Thanks anyway, I'm looking forward to see your pics

***mike_si_29*** · 10-12-2007, 03:15 PM

Awesome news

xfactorwrx · 10-12-2007, 03:44 PM

i will only be posting pics.

el_ache_veintidos · 10-12-2007, 04:49 PM

Good pics of the inside if the only thing I need

GreySi07 · 10-12-2007, 05:02 PM

Well i see where this is gonna go .X is gonna post up pics and someones gonna copy it and try to sell theis own custom intake for $400.

hoonu · 10-12-2007, 05:12 PM

Quote:

Originally Posted by GreySi07

Well i see where this is gonna go .X is gonna post up pics and someones gonna copy it and try to sell theis own custom intake for $400.

What's really funny is that my friend did the same thing X did with his 01 Civic SI. Only he did it about 4 or so years ago. I was showing him last night and he got a crack out of the 20-something page thread. He even used the foglight as the intake hole....

go figure....

10-12-2007, 12:51 AM	#1 (permalink)
el_ache_veintidos Senior Member Join Date: Apr 2007 Posts: 109	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:
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10-12-2007, 12:58 AM	#2 (permalink)
fatality122887 Senior Member Join Date: Jan 2007 Location: fl Age: 24 Posts: 375 luke	so what is this one person dose it so everyone has got 2 try 2 coustomize a maf? i mean i'm all for being an individual but why would u spend 300$ on an intake to cut it up and also **** up your stock air box? makes no sence 2 me but if you wana do it its your money. More power 2 you man and hope you are happy with your creation

10-12-2007, 01:08 AM	#3 (permalink)
el_ache_veintidos Senior Member Join Date: Apr 2007 Posts: 109	I have the Injen laying around so cutting it wasn't a big deal for me. And honestly, the injen reduction on the maf "housing" is simply a piece of **** that was underdeveloped to simply try to get the maf read right and they fail miserably on it. Before this mod, the cars ALWAYS runs very rich, about 12.0-12.5:1 on almost all the power band until it reaches about 7700 when it get even worst and drop to mid 11. I know that now it is reading more accurately and don't have the 2.75" bottle neck on the middle of the pipe. Now it is a true full 3" CAI.

10-12-2007, 02:24 AM	#4 (permalink)
KidnKorner Senior Member Member Join Date: Jul 2007 Location: Gilbert, Arizona Age: 36 Posts: 1,422 Shane	Butt dyno tuning at its finest

10-12-2007, 02:34 AM	#5 (permalink)
el_ache_veintidos Senior Member Join Date: Apr 2007 Posts: 109	I already said it, someone please make a dyno before and after. Right now I don't have any dynos near of me, but I will try to make some time in the near future to test this against the stock air box in the dyno.

10-12-2007, 02:36 AM	#6 (permalink)
07mugencivic Join Date: Feb 2007 Location: Redlands, Ca Posts: 221,950 ToE kNeE	ill try it

10-12-2007, 02:48 AM	#7 (permalink)
*Excalibur* VIP Member Join Date: May 2007 Location: In yo house puttin my feet on ya couch Age: 29 Posts: 13,644 Jeremy	Thanks for supplying us with pictures that shows the public how what modifying the maf housing really means. +1 rep for you. However, I'm kinda disappointed there were no dynos. I think you would have been alot happier along with the community if you would have dyno'd. On a sidenote; I think someone that gets a cel from their injen cai should try this and see if it remedies the problem.

10-12-2007, 02:51 AM	#8 (permalink)
Whocares05050 Senior Member Join Date: Oct 2007 Location: SOFLA Posts: 16,556	Interesting

10-12-2007, 02:55 AM	#9 (permalink)
el_ache_veintidos Senior Member Join Date: Apr 2007 Posts: 109	nearest dyno facility it's about 2+ hours from here and I don't have to much spare time, but I want to know how much this mod will gain so I'll try to make some time in the coming weeks. Lets see what happens.

10-12-2007, 03:06 AM	#11 (permalink)
*mike_si_29* VIP Member Join Date: Jan 2007 Location: SoCal Posts: 1,982 Mike	Nice work man ... i have injen CAI too and wondering how many hp you gained.

10-12-2007, 01:27 PM	#12 (permalink)
xfactorwrx Senior Member Member Join Date: Jun 2007 Age: 29 Posts: 1,459 Emmanuel	lol, nice work man, but the way you modded the MAF is going to make you run RICH!!! maybe not as much as the injen but still richer than stock. nice try though. im going to post pics of the MAF tonight. cheers!

10-12-2007, 01:41 PM	#14 (permalink)
GreySi07 Senior Member Join Date: Mar 2007 Location: Jax,FL Posts: 883	Excalibir you read my mind.

10-12-2007, 03:15 PM	#16 (permalink)
*mike_si_29* VIP Member Join Date: Jan 2007 Location: SoCal Posts: 1,982 Mike	Awesome news

10-12-2007, 03:44 PM	#17 (permalink)
xfactorwrx Senior Member Member Join Date: Jun 2007 Age: 29 Posts: 1,459 Emmanuel	i will only be posting pics.

10-12-2007, 04:49 PM	#18 (permalink)
el_ache_veintidos Senior Member Join Date: Apr 2007 Posts: 109	Good pics of the inside if the only thing I need

10-12-2007, 05:02 PM	#19 (permalink)
GreySi07 Senior Member Join Date: Mar 2007 Location: Jax,FL Posts: 883	Well i see where this is gonna go .X is gonna post up pics and someones gonna copy it and try to sell theis own custom intake for $400.

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