[Daemon]

Trying to improve airflow in and out of the 3.slow, I decided to do the Intake Silencer Removal mod. I've seen some threads talking about it elsewhere but mostly for the 3rd gen motor so here's my own.

I could probably have figured something out with various bits of PVC or similar tubing and dryer hose and misc taps for the vacuum lines and saved some money, but I'm lazy so when I saw one of these universal air intake kits
http://store.summitracing.com/partde...5&autoview=sku
http://martelbrothers.com/product.ph...1f704c347572ff
at Pep Boys, I picked it up along with an extra rubber coupler..
https://martelbrothers.com/catalog/C...k-p-16088.html

Went real quick.
I disconnected the stock breather/vacuum tubes from the silencer and intake tubing, removed the silencer and original intake tubing. Then removed one 4 inch straight section from the intake kit, put the second rubber coupler on the end, pulled both couplers out as far as they'd go while still allowing me to clamp them securely to the intake tube, and stuck the 45 degree bend end onto the throttle body and the straight end onto the airflow sensor opening coming from the airbox. The airbox end doesn't line up perfectly straight, but there's enough extra room on the rubber coupler to handle the angle.
The couplers are also 3" diameter while the stock intake is a bit smaller, but again the couplers will compress enough to take up the difference easily.

Pulled the rubber plugs for two of the holes in the center section of the intake kit and used two of the supplied plastic fittings (a medium and a large) to handle the stock tube that used to plug into the silencer, and I replaced the crankcase breather tube with the one supplied with the kit (cut down to length). Had to warm up the ends of that slightly smaller tube to make it pliable enough to fit over crankcase breather and large plastic breather fitting, but now it's nice and snug. Tightened everything up, and here it is.


Yes the tube is very shiny and the engine very dirty.. I may paint it all black. Matters little to me.

After driving it around hard, I also made sure that there's enough give in the rubber couplers (especially the one on the throttle body side) that it can soak up engine movement without a problem.

As for performance gains.. Hard to say. Can't hurt. I do wish there was some way to have a larger airflow sensor (that rectangular flapper) passage, because that's gotta be pretty restrictive.

ian

[Rattler]

As for performance gains.. Hard to say. Can't hurt

how about moving the Air sensor closer to the throttle body?....just a thought
J.

[Daemon]

Given the diameter of this new tubing, I don't think there's any restriction in airflow between the sensor and throttle body. The smallest cross sectional area is the sensor itself, and that spring loaded flapper in the airstream can't be helping. No replacement for it that I know of though.

Plus to go any further, I'd have to ditch the airbox and figure out how to attach some other type of filter to the other side in which case might as well spring for the K&N induction kit (for quite a lot more money).

ian

[MjP]

Originally posted by Rattler
how about moving the Air sensor closer to the throttle body?....just a thought
J.

Don't you mean closer to the filter? So that it will read a colder temperature and richen up the fuel curve?

It may give some power, but i'm not a big fan of "fooling" the ECM. There's always drawbacks.

[n8buddy]

Daemon, thanks for bringing this kit to my attention. I was trying to do the build it yourself mod, but i couldnt find half the parts and it was getting to complicated. I did pretty much the same thing as you, but i took a hack saw the the spare section to make it a tight fit. here are some pics.

yes that is duct tape on my old intake, and no its not my handywork. (that is the main reason for doing this mod.)

[n8buddy]

finished product.