Well, after working the last two weekends and putting in over 20 hours, I finally finished my cowl induction. I have been dragging everyone along with me so long, I think everyone pretty much figured I was never going to finish the project.
To review, back in February, I was quite despondent over the fact that I could not get an X-Factor intake. I reviewed all the possibilities for intakes and proposed that cowl induction be considered.
At first, the issue was over finding an airbox suitable to house a cone type filter. I went on a wild goose chase trying to adapt a CRV airbox to the Si. The base fit fine, but the cover required major cutting to the metal shelf. After trying for several weeks, I gave up.
I then took a look at the Si airbox. The base was large enough to house a cone type filter, but the cover was too small. So, I cut away the entire cover save for the base and completely rebuilt the airbox from scratch using sheet ABS plastic. I overlaid the cover with faux cf vinyl sheet to make it look better.
I then tried out the airbox along with a Soxfan143 MAF housing designed for a race header and cat-back. I also purchased an M&M scoop which enhanced breathing. The car pulled really strongly, especially in VTEC. The motor also was much smoother, especially when cold. Throttle response is much better than before as well.
Next, I attacked the metal shelf. I cut out a section, used a rectangular piece from a microwave oven and then put the BSR scoop in, which also had to be cut down.
I used a 4" rubber coupler and attached it to the airbox cover. I made an ovular hole in the airbox cover to accept the coupler. This 4" coupler then fit nicely inside the BSR scoop.
[At this point, I want to especially thank Mike_Si_29 for his great cowl induction system that he made. I used his idea of placing the scoop vertically with a piece of sheet metal covering the scoop to keep water out.]
I reattached the wiper cowl and was good to go. Since it was so hot out and since I was a nervous wreck trying to finish the project, my clothes were soaking wet. I took a deep breath and took the car out for a spin.
Oh man, does this baby ever get it on in VTEC. The car pulls much more strongly than even with the M&M scoop and fabricated airbox cover. The sound is incredible. It makes a deep roar when VTEC is engaged. I am extremely impressed with the results. Car is much faster, pulls stronger and makes a wonderful sound.
This project has taken alot of prayer and diligence. I cannot thank my Lord enough for all the inspiration and ideas that he has given me. Everytime I had a snag, I felt the revelation of God helping to overcome each problem.
This project has been extremely time consuming and wearying to my body. I also cannot thank my wife and son-VQ Power enough for putting up with all the countless weekends working on the airbox and ductwork.
Thanks to all of you who have believed in me and have supported me. You are the greatest. I have made many friends as a result of this project and will be more than happy to help anyone out. God bless each and every person who has stood with me.
Airbox cover:
M&M scoop:
Airbox installed before cowl induction:
Airbox with Amsoil cone filter and Soxfan143 MAF housing in place:
Airbox cover with duct installed:
Here it is, the cowl induction installed:
Original cowl induction thread: http://www.8thcivic.com/forums/bolt-...am-air-si.html