Which cars sound nice? (Videos please!)

[ITCC_Andrew]

BOVs at 2:23.

The turbo spools up, produces pressure. And, when you have to lift off of the throttle, (to shift or brake) that pressure needs to escape. But, you don't want it to go the wrong way out. So, you open a valve, allowing the pressure to escape directly out of the valve. You understand now?

So, I was right? Stop, guys, you're making yourselves look "absurd." I was right. Admit it.


Not only was I right, in that post, but, as I said much earlier, it's at least partially relevant to the exhaust. No exhaust = no spinning turbine = no turbo = no BOV.

 

[Rotary Junkie]

Thing is, that's a valve that allows boots pressure to be released. It allows a turbo to release pressure more efficiently. Turbos run off of exhaust gases. Therefore, it's relevant. And, since it's an opinion, it's not absurd, either.

A BOV has absolutely NOTHING to do with the exhaust. It's all intake related. Throttle closes, turbo is still spinning/forcing air in, that air wants to go somewhere. If it can't find somewhere upstream of the compressor to go, it's still going to find a way out... Back through the compressor.

--

On another note Mel, you scare me. You're like I was at 13-14, lots of enthusiasm and ideas but very little actual knowledge. Hell, I still am that way to a certain extent (and have gotten in over my head several times on projects that then needed to be aborted due to lack of money/time/space/all three) but there's a difference. Research. Research everything. Not just what to do to something, but why you would do a certain thing. And then do some more research behind that. Read, research, think about things, find ways to analyze how things work.

And here's the fun part...

You'll never know everything about chassis setup or about engine tuning. Ever. Nobody ever will, those are two areas where there is always something to surprise.

 

[1241Penguin]

Not only was I right, in that post, but, as I said much earlier, it's at least partially relevant to the exhaust. No exhaust = no spinning turbine = no turbo = no BOV.

Pay attention to the diagram in the video (even if it's slightly flawed, according to Eunos). The exhaust gases power the turbo. After that, the exhaust gases go out through the exhaust. They do NOT go through the BOV, because if they did, that would mean that the exhaust gases would be used for intake.

 

[speed junkie]

Research. Research everything. Not just what to do to something, but why you would do a certain thing. And then do some more research behind that. Read, research, think about things, find ways to analyze how things work.

This is universal. 👍


These kids (yes I use that word loosely ) have something the last generation did not grow up with. The developed internet! So much knowledge available at their fingertips and nothing...

 

[ITCC_Andrew]

Pay attention to the diagram on the video (even if it's slightly flawed, according to Eunos). The exhaust gases power the turbo. After that, the exhaust gases go out through the exhaust. They do NOT go through the BOV, because if they did, that would mean that the exhaust gases would be used for intake.

That's what I'm saying. I don't like exhaust noises much. I like BTCC/WRC/CCTCC engine sounds. I liked the engine sounds on the 787B and the #69 and #70 Speedsource Mazda RX-8s. But, no, I don't like many exhaust sounds.




Yeah, sounds nice enough.

 

[Roo]

Any thing welcome, if it sounds nice.

All of these.

 

[speed junkie]

So I was reading through the thread again for the lulz and realized he edited/changed things on allot of his posts. Especially the one where Canada requires cars to have more than one catalytic converter...and that his car had two from the factory. Too bad as it was, without a doubt, one of the highlights of the thread.

 

[ITCC_Andrew]

So I was reading through the thread again for the lulz and realized he edited/changed things on allot of his posts. Especially the one where Canada requires cars to have more than one catalytic converter...and that his car had two from the factory. Too bad as it was, without a doubt, one of the highlights of the thread.

It has three. Canada's got strict emissions testing requirements. I know that, because I just had it changed, and took in two of the three catalytic converters (that weren't working) and got $6 for them. Silly autowreckers, why you pay for non-functioning parts?

 

[nobuffalo]

Silly autowreckers, why you pay for non-functioning parts?

Because the metals inside are likely worth a good bit more than the 6 dollars they gave you! Silly you!

Dude, I thought you were done with GTP?

 

[Crash]

Silly autowreckers, why you pay for non-functioning parts?

Because the metals inside are likely worth a good bit more than the 6 dollars they gave you! Silly you!

This. That silly autowrecker is probably profiting quite heftily from those precious metals in your catalytic converter.

Honestly, I'm surprised you only got $6 for them.

 

[ITCC_Andrew]

This. That silly autowrecker is probably profiting quite heftily from those precious metals in your catalytic converter.

Honestly, I'm surprised you only got $6 for them.

They were aftermarket junk. There weren't precious metals. It was fabricated by a French mechanic/welder who thought he knew how to make catalytic converters. But, it wasn't working. The whole thing cost me dearly, since we didn't believe that the cats were going bad, so we went to two shops, to check.

$1000+ spent, I'm happy to get even $6 back.

 

[Antonisbob]

This thread is full of so much facepalm.

Allow me to fix that.

 

[HELLAFLUSH240SX]

They were aftermarket junk. There weren't precious metals. It was fabricated by a French mechanic/welder who thought he knew how to make catalytic converters. But, it wasn't working. The whole thing cost me dearly, since we didn't believe that the cats were going bad, so we went to two shops, to check.

$1000+ spent, I'm happy to get even $6 back.

Where Im from they usually cost around 100. You got did.
Also, there is no such thing as multiple catalytic converters.
On what car did they have 3?

You cant make your own converter either wtf.

 

[ITCC_Andrew]

Where Im from they usually cost around 100. You got did.
Also, there is no such thing as multiple catalytic converters.
On what car did they have 3?

You cant make your own converter either wtf.

This whole car confuses mechanics, but, I promise, the catalytic converters cost $500+. I went to several sources, and bought a middle-quality one for $750. The rest was the labour of taking off the French mechanic's mistakes.


Guys, don't buy cars from Québec, Canada. It seems like a bad idea, now. Having gotten the chance to look at the number of welds on the catalytic converter that came with the car, and their location, something was wrong.

 

[HELLAFLUSH240SX]

Im from Chicago so I know of rust.
Thats insane, you bought 3 separate converters and had them all installed?
who told you to buy 3?

 

[ITCC_Andrew]

Im from Chicago so I know of rust.
Thats insane, you bought 3 separate converters and had them all installed?
who told you to buy 3?

No. There are 3 catalytic converters on Imprezas. I'm not kidding. Every time I called and asked, the person I called asked "Front or rear?"


There's one just outside of the headers (the one I replaced), and one inside the muffler, in between two resonators, from what I've heard.


However, if we're going to talk about a facepalm moment, how about the "Canadian Auto Assistance" (CAA) mechanic/secretary "Oh, no, the catalytic converter bolts right into the block."

 

[speed junkie]

Are you sure you're not talking about a 3-way catalytic converter as opposed to 3 separate converters?

Look under "Types"

EDIT: guess not, after reading above post.

And now you're saying you have two instead of three?

 

[ITCC_Andrew]

The rusty one looks like the one I got replaced.

There's a second one on the end of that pipe, isn't there? Hmmmmm...

 

[speed junkie]

So where's the third?

 

[ITCC_Andrew]

So where's the third?

Learning how to count is a start. I said there's one on the rusty pipe (which is the one I replaced) and two more after, on the silver/clean pipe, which goes between the first catalytic converter and the muffler.


Again, Subaru motors are boxers. Could that have something to do with it? I don't imagine it would, but, I haven't had a chance to sit down with a boxer motor specialist and find out every single difference.

 

[marluxiaXI11]

There is apparently a single catalytic converter unit on the Impreza. If it goes bad your supposed to replace the one unit.

But, they have two o2 sensors. A front one and a back one.

 

[ITCC_Andrew]

There is apparently a single catalytic converter unit on the Impreza. If it goes bad your supposed to replace the one unit.

But, they have two o2 sensors. A front one and a back one.

Which Impreza? Year? Trim?


Also, I highly doubt every single mechanic got the O2 sensors/catalytic converters mixed up, but, damn, that'd be terrible luck... I called so many of them, and asked "How much for a catalytic converter?"


They all asked "which one?"


I should just leave Canada... or 💡 do my own work.

 

[speed junkie]

Learning how to count is a start. I said there's one on the rusty pipe (which is the one I replaced) and two more after, on the silver/clean pipe, which goes between the first catalytic converter and the muffler.

Hard to do when you STILL haven't posted a photo of an exhaust with three cats on it. Your wording doesn't help either.

 

[marluxiaXI11]

2001 2.5 rs.

Did too know that there is an entire forum dedicated to the 2.5 rs?

 

[ITCC_Andrew]

2001 2.5 rs.

Did too know that there is an entire forum dedicated to the 2.5 rs?

Yes. But, I tried to join there, and couldn't find a registration link for too long, and then the site crashed when I tried to join. Nah. I'm not horribly bothered, not knowing. It just means that I won't be subconsciously pressured into building my car into what I see somewhere else.

Hard to do when you STILL haven't posted a photo of an exhaust with three cats on it. Your wording doesn't help either.

Problem was solved, I guess. Apparently, no Canadian mechanics bothered to tell me, that the O2 sensor was the one that there was two of, and that there was only one catalytic converter. 🤬 🤬 I'm doing my own 🤬 work from now on! I'm so done with trained monkeys Canadian mechanics, I might never set foot inside someone else's shop, ever.

 

[niky]

I've had to do some clean-up in here. Please note: all posts must be on topic or a discussion of the posts on the topic. Contentless posts and meme humor will be deleted. Thanks.

 

[speed junkie]

I might never set foot inside someone else's shop, ever.

What makes you think you can do a better job than them? You're the one who misunderstood them and chose not to read up on the system or even look underneath your own car.

 

[ITCC_Andrew]

What makes you think you can do a better job than them? You're the one who misunderstood them and chose not to read up on the system or even look underneath your own car.

I can't get underneath my car, yet. The budget for jacks/stands is only now coming to fruition. Also, I've not had time or motivation to actually buy some.
Also, I didn't take the first offer (a Subaru dealer) asking $1200 for a catalytic converter. No. I found one for $750, by shopping around a bit. That one's better, and was installed for less than the cost of just the Subaru dealer part.


Also, I did quite a bit of reading. I just got a message from niky, further confirming that there are more than one catalytic converter on the Impreza. Thing is, there's a "front" and "back," just like the mechanics said. There's just not a third one. So, since no one knows what they're talking about, I'll just go with what niky said, admit that it was wrong to say that there were three, and move on.

 

[Punknoodle]

This is the funniest thread I have ever seen in my life. I have a BOV. Guess what. Street car. Actually know what? Plenty of cars have them from the factory, it's just you wouldn't know because they plumb back to the intake as opposed to venting to atmosphere..

Lets see how you go without Google. Know why a fluttering BOV is actually a bad thing even though people seem to actually want to achieve it? Know what a wastegate is? Know how a BOV is plumbed up? Know why a BOV venting to atmosphere makes an engine with an Air Flow Meter run rich for a period after getting off throttle sometimes making it blow black smoke or backfire?

You claim to know a lot and like ignoring other people's knowledge so go on. Surprise me.

 

[speed junkie]

I can't get underneath my car, yet. The budget for jacks/stands is only now coming to fruition. Also, I've not had time or motivation to actually buy some.

So I'm guessing that the reason you didn't just look it up online had something to do with "motivation." For future notice, it took me about a minute to NOT find anything regarding 3 catalytic converter laws in Canada.

Also, I didn't take the first offer (a Subaru dealer) asking $1200 for a catalytic converter. No. I found one for $750, by shopping around a bit. That one's better, and was installed for less than the cost of just the Subaru dealer part.

Found one a couple hundred less in about 30 seconds.

Also, I did quite a bit of reading. I just got a message from niky, further confirming that there are more than one catalytic converter on the Impreza. Thing is, there's a "front" and "back," just like the mechanics said. There's just not a third one. So, since no one knows what they're talking about, I'll just go with what niky said, admit that it was wrong to say that there were three, and move on.

So even after doing "quite a bit of reading" you still haven't learned for yourself what I found out after a minute of searching the internet. It's not rocket science man. You're sitting there typing up plans on your "shop" web page on how you want to make a rally car out of your wagon but you still haven't spent 100 bucks on a cheap jack and a couple jack stands to get under your car and replace your own cats? But you have 1000 to spend on other people doing it for you. Get your story straight. You sound like you're 13.