Another worn out exhaust and pipe diameter question

[LittleWhiteBubble]

My exhaust is stock on my 92 camry, and still in pretty good shape. I only have the 5s and I'm not looking to get any magical horsepower, but I would like to have a little more sound in the exhaust and change things up a bit, so I was looking at that N1 style muffler on k2's site. Lots of you rave about it, and its very cheap. My question is this, I have stock diameter piping, the inlet is 2.5 on that muffler. Would it be beneficial at all to increase my cat-back diameter or should I just have a muffler shop stretch and weld the muffler to the stock diameter piping? It would cost around 100 bucks probably to run a larger diameter piping, and if I won't see any gain at all I'd rather just spend the 30 plus ten bucks to have the thing welded on.

[PortugalFocus]

I think the OE piping flows rather well. Keep the stock diameter. The most advantage will be seen from a cat-delete or a cat-delete with a header + downpipe.

[LittleWhiteBubble]

I'm just afraid with deleting the cat my car will sound like one of those annoying tin cans running down the road. I don't want to sound like a jet when I'm going 3 miles an hour haha. I had a 2" N1 style cat back exhaust on my 91 accord and I loved the sound of it with and without the silencer. So I'm hoping it sounds similar on the camry.

I just bought the muffler. 29.99, but I only paid 27.55 because they have a promo-code on their facebook page. Score. FYI It's 8% off your entire purchase if you guys plan on buying anything from them. It's k2-fb10

[73sport]

In General I've found most of this to be failry true:

To make a system last, you need to keep the temp up. One way to keep the temp up is to reduce the size ever so slightly after each temperature drop (muffler ect). In short, large when it leaves and smaller when it exits. Note, this approach also keeps the velocity up and usually sounds crisper. Depending on the combination Torque can increase by having some backpressure in the exhaust.

Then there is the trade of performance vs longevity which says to keep it the same diameter until it exits the rear. This is less temp, less crisp on the sound, and less velocity.

Going from small to larger continues in the same trend with the temp and velocity dropping even more while the note heads towards a rasp sound. For upper RPMs less back pressure/less restiction lends itself towards higher RPM's. Remember each bend drops temp and velocity in any system.

So for daily drivers the first option is usually best. Race cars and ruckus, the later of the three.

Specific to your question is: enlarging the pipe to fit a muffler and then reducing it to make it fit the tail pipe will increse backpressure and be more restrictive than having the same size components throughout.

Not sure this is helpful or nut. . .

[LittleWhiteBubble]

hmm. Does anybody by chance have undercar install pictures for this muffler or one similar, or know where I can find some? I tried searching cause I thought I saw some on here once, but now I can't find them. I just want to see how people have angled them and where the brackets are and whatnot so I can give the guy at the muffler shop an idea of what I want

[bigbird]

leave the stock size cat back unless you plan on doing a full exhaust some time. because of how short the N1 is, a shop can either stretch or just use reducers and mount it that way. you may even want to source the reducers yourself to save on cost and the shops potential lazyness.

if its an exhaust shop you can just explain to him what you want, he can figure out how to mount it unless he completely sucks. easiest and cleanest setups is jsut to remove the stock muffler and install this one in it's place.

[LynchburgCSI]

Originally Posted by bigbird

leave the stock size cat back unless you plan on doing a full exhaust some time. because of how short the N1 is, a shop can either stretch or just use reducers and mount it that way. you may even want to source the reducers yourself to save on cost and the shops potential lazyness.

if its an exhaust shop you can just explain to him what you want, he can figure out how to mount it unless he completely sucks. easiest and cleanest setups is jsut to remove the stock muffler and install this one in it's place.

Exactly what I had done.

Originally Posted by LittleWhiteBubble

hmm. Does anybody by chance have undercar install pictures for this muffler or one similar, or know where I can find some?

Search for threads started by "Spitfire." There's good pictures in that thread. Here's my K2motor.com muffler. You can see (kind of) that two bends were put together and then linked into the straight piping after the resonator.

[bigbird]

Originally Posted by LynchburgCSI

completely off topic but Ken...is your licanse place supposed to be making fun of all your antenas...as in a siren sound?

[LynchburgCSI]

Rob, you're the first person to get it right on the first guess!

[bigbird]

what do it win from your parts bin? (i want that steering wheel)

[LynchburgCSI]

$300.

[LittleWhiteBubble]

Cool thanks for the pictures. I'll try and find that other thread too. I like how some people have their exhaust angled upwards slightly, I'd like to try and do something like that. The tracking number shows it should be here on monday!

[LittleWhiteBubble]

I like the amount of angle you have on yours bigbird.



That is a great picture. I may just have to show that one to my exhaust guy haha

[larocque44]

i just ran 2.5'' all the way to a stock style muffler removing the resonator and deleting the cat sounds good next step is a slightly louder muffler noticed some torque and throttle response. I dont think they make a header for 3 gen 5S-FE engine or for that matter a flange to have one made if so id love to get my hands on one or even some cams.

[LittleWhiteBubble]

I'd be alright with deleting the cat, since there's no emissions in florida anymore, but I don't want something too loud. I want something with better sound than stock but not retarded civic loud. I think I'm going to go with just the muffler welded to the factory diameter piping, and if I'm not satisfied with that, I can always go back and delete the cat later on.