The Only Exhaust Thread You Should Ever Post In

[timot_one]

I've read that Bosch sensors are not good on newer Hondas.  I have never used a Bosch sensor because of that, so I have no experience.  I've always used the OEM Denso sensors.

[CrackerTeg]

I've read it too so I'm not refuting it at all. I was in a pinch when mine went. I was also just sharing my experience as more of a YMMV.

[fatbastard]

the Bosch is lying around my parts room (i dunno why i even purchased one in the first place), so it was a no-brainer...

I'd keep your advice in mind and purchase a Denso sooner or later. thanks!

[timot_one]

You can usually get Denso sensors at a decent price if you buy them with the Denso part number.  The a/f sensor I have for my car is for a RSX Type S and is usually around $200+ if you buy it from Honda.  When I bought it with the Denso part number from Amazon, it was $99.

[Mike]

You can usually get Denso sensors at a decent price if you buy them with the Denso part number.  The a/f sensor I have for my car is for a RSX Type S and is usually around $200+ if you buy it from Honda.  When I bought it with the Denso part number from Amazon, it was $99.

I hate that companies do this. Relabel a part and sell it for seven times more

[757k24]

Got my high-flow cat today. A bit confused about EPA regulation though, can I take this to a shop and have them replace it in even though my current OEM cat is still working? Really don't feel like dealing with the bolts after 116k. I live in VA and I'm pretty sure our emissions laws aren't as strict as CA.

[olecram39]

Since my current gas mileage its very bad, Some members have suggested i may have a clogged catalytic converter. I wanted to ask you guys for your opinion on what kind of replacement i should get. I plan on getting a TSX header and full 2.25 custom exhaust in the near future so what would be best for this? I live in Florida so emission tests is not a problem. I have an I4 Auto with an OBX muffler in stock piping right now. The options that come to mind are.

1. Replace it with OEM or similar "plug and play" cat.
2. Take the one i have and gut it completely (will i get a CEL?)
3. Replace it with a Test Pipe
4. High Flow Cat

I don't know much about exhausts systems and such so school me!

[accordguy04]

I used an ebay test pipe on my 04 V6 with no issues.  It was $30 and pretty good quality.  But that was for the third cat... not sure how that would work on yours.

[olecram39]

I dont see why it would be different. Except that i only have one Cat in my i4. What are the advantages and disadvantages of a test pipe?

[timot_one]

Catalytic converters rob power.  Run a test pipe.  If you're seriously trying to make decent power with your exhaust, consider something a bit bigger than 2.25".  Most guys are running a 3" exhaust on their K's and make good power with them.

[olecram39]

Really? The reason i had 2.25in in mind was because if i remember correctly i read in some posts that running a 3" exhaust in the k24 or even 2.5" would cause a loss in power or torque or something in the lower end? something about back pressure or something like that?

[timot_one]

Yeah, that's all bullshit.  K's want to breathe and it has been proven over and over again that they respond well to a 3" exhaust.  Of course, you'll also want to have the proper header and intake set up too.  That's where you'll end up spending quite a bit of cash if you really want to make some power.

[olecram39]

Well I have a short ram intake, tsx intake manifold, light weight under drive pulleys and that's where I plan to stay with the exhaust being the last piece of the puzzle. I'm not aiming for great power increase and I already have a muffler that I like the sound of, it has a 2.5 inlet so should I just run  a 2.5 custom exhaust and call it a day. Or is half an inch more really worth it?

[timot_one]

In that case, run at least 2.5".  That will keep the noise down.  I have a 3" exhaust set up, and it's fairly quiet because I have more than one muffler.  Because it's 3", it flows a lot better.

[olecram39]

Will do. Thanks again man.