TSX Intake Manifold DIY / Q & A

[Jellynuts]

I finally had the break in the weather to install this.

First and foremost, thanks for the great DIY Skippy.  FWIW, when taking off the bracket on the stock IM, I found it a lot easier to slide a mirror to see what I was doing.  I didn't find it to be a pain at all  My exhaust certainly sounds deeper, but honestly, I also haven't had a chance to really rip it on the road.

[Jellynuts]

I finally had the break in the weather to install this.

First and foremost, thanks for the great DIY Skippy.  FWIW, when taking off the bracket on the stock IM, I found it a lot easier to slide a mirror to see what I was doing.  I didn't find it to be a pain at all  My exhaust certainly sounds deeper, but honestly, I also haven't had a chance to really rip it on the road.

OK, I take it back!  The ride is just...  nicer.  I wish I had the mechanical know how to describe it, but things just seem smoother...

[rjp6262]

I finally had the break in the weather to install this.

First and foremost, thanks for the great DIY Skippy.  FWIW, when taking off the bracket on the stock IM, I found it a lot easier to slide a mirror to see what I was doing.  I didn't find it to be a pain at all  My exhaust certainly sounds deeper, but honestly, I also haven't had a chance to really rip it on the road.

OK, I take it back!  The ride is just...  nicer.  I wish I had the mechanical know how to describe it, but things just seem smoother...

yeah i have the same feeling. it's as if everything flows much better now and the engine can get up and go easier.

[Skippy]

REAL technicians don't use mirrors...we get cut up the old fashioned way! Who needs a mirror when you can close your eyes and hope to hell you don't get burned!?!

Just FYI for you guys, that hissing/sucking noise isn't specifically from the manifold.  It's from the idle assist valve which diverts intake air to the injectors at startup.  Once the wax element inside the valve body melts, the valve closes and the sucking noise stops.

[rjp6262]

with this has anyone else noticed an increase in mpg? mine went from like 27 to 29...it's weird but i'm not complaining!

[Rustywaffle]

mine went down... i cant stay off the throttle

[slipkord]

What about replacing our stock IMs with one from a RSX type S? Has anyone tried this? Would we see more/less gains than with the TSX IM?

If I can find a TSX intake mani I'm all on it. The way you guys described it, sounds like heaven

[timot_one]

The RSX Type S IM has been discussed before.  The benefits from having one show up above the redline on our Accords.  You actually lose power with an RSX Type S IM.

[Skippy]

The RSX-S manifold is not compatible with the accord due to a difference in design.  The air assist valve is a separate piece with that manifold, while ours is integrated.  The water neck in the same area is also placed in a different location.  You will probably see zero gains in the usable powerband since that manifold has short runners that are meant for high RPM induction.  The redline on the accord is simply too low to see any benefits from an RSX-S manifold.  The same goes for the RBC intake manifold.

[Milan]

Chalk-up another TSX IM mod thanks to Skippy and this thread.  

The install went pretty smoothly.  Took me about an hour from start to finish.  Luckily, I didn't have to replace the TB gasket.  Hitting the base of the TB on several different locations freed it up nicely.  

I was surprised just how caked-up and oily the Accord IM was.  I bought my TSX IM used but it looked brand new compared to my old one.  Is that normal?

[CrazyCreashunz]

Chalk-up another TSX IM mod thanks to Skippy and this thread.  

The install went pretty smoothly.  Took me about an hour from start to finish.  Luckily, I didn't have to replace the TB gasket.  Hitting the base of the TB on several different locations freed it up nicely.  

I was surprised just how caked-up and oily the Accord IM was.  I bought my TSX IM used but it looked brand new compared to my old one.  Is that normal?

Milan how was removing the studs did you encounter any problems with that? Did you do it like the DIY showed or did you use a stud remover?

[Skippy]

Glad you had a positive install experience.  Yes, having oil residue in the intake manifold is normal.

[Milan]

Milan how was removing the studs did you encounter any problems with that? Did you do it like the DIY showed or did you use a stud remover?

It was easy as pie, did it like Skippy advised in this DIY.  I put a 12mm wrench on the stud before I put the first nut on.  Then I put on the second nut and made the nut sandwich.  With the wrench on the bottom and a 12mm ratchet on top, I just turned each one in the opposite direction to jam them together.  Then I just undid the stud with the wrench that was stuck on the stud below the nut sandwich.  Easier done then said lol.

[Jeff Likes Bagels]

I just posted a thread over there that I wanted one for under $100 shipped and in a matter of a day I got 2 offers.

Holy shit, I just did the same thing you did and got a seller 8 minutes later. $60 shipped. The guy's name is LKSi. I don't know if he's credible or not.

http://k20a.org/forum/member.php?u=28098

[NWINNIE34]

good deal man... do it up asap.. install isnt very hard at all
make sure you get a Throttle body gasket and look into the option of a performance intake manifold gasket (P2R)
might be an extra $50 for both together but the concept of what the IM gasket does makes sense.

the P2R gasket is literally 10 times as thick as the stock oem IM gasket.
The oem gasket is made from thin metal, where the P2R is made from high temp resistant, low heat soak teflon material.
this should in turn reduce the amount of heat soak that will take place in your engine because this gasket provides a wider and less heat attractive surface between your IM and injector plate (what the IM connects to)

its your call in the long run, at least upgrade to the TSX IM gasket if you dont decide to use the P2R