Questions about Exhaust systems, Catalytic Converters and Headers/Manifolds

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2
votes
2answers
342 views

Improve engine sound of Mazda RX-8

I would like my 2006 Mazda RX-8 Shinka to be a little louder. I just don't know where to start though. The engine has such a nice sound, but I can't really hear it. I don't want it to be so loud that ...
2
votes
1answer
206 views

Dirt bike silencer core cracked/rusted

After removing and disassembling my FMF Factory 4.1 dirt bike silencer, I saw that the inner core was cracked and extremely rusty (having the potential for more cracks). I definitely want to fix this ...
2
votes
3answers
2k views

Remove rounded manifold bolt

I'm trying to take off the manifold bolts on an old Chevy 350 (the ones that connect the manifold to the header). I got 4 out of the 6 bolts out, but 2 are extremely struck and rounded due to all the ...
2
votes
1answer
603 views

Are there any alternatives to the OEM muffler for a Volvo XC90?

I've been looking for an alternative to the OEM muffler for a Volvo XC90 2.5T AWD. There are a number of other Volvo vehicles that use the same drivetrain, but not one of the national muffler shops ...
2
votes
0answers
83 views

How to inexpensively replace missing baffles on a classic bike

Dilemma I have a 1980 Suzuki GS550L. Not only did one of the previous owners completely remove the baffles from the exhaust pipes, but they welded fender washers on the end of the pipes, so the OEM ...
1
vote
2answers
2k views

Exhaust Flame Kit

I have been searching over the past week or so trying to educate myself as much as possible before going ahead and trying to build an exhaust flame kit from scratch (the ones on sale on the internet ...
1
vote
1answer
88 views

What is this exhaust type thing?

What is this black exhaust type thing coming off the side of this land cruiser? What is it for?
1
vote
5answers
3k views

How to determine by ear which part of exhaust needs replacing?

I have a 1.3L Skoda Felicia, (carburetter engine without catalytic nor other gimmicks). Since past 1-2 months I would hear the exhaust sound has changed, it became more and more audible and at full ...
1
vote
2answers
478 views

Why would gasoline engine exhaust smell like perfume?

Quite often I encounter a vehicle that has exhaust with rather sharp smell similar to perfume. As far as I know this is attributed to the engine malfunctioning - normally working engine will exhaust ...
1
vote
1answer
104 views

Changing Exhaust on Royal Enfield

I want to change bend pipe and exhaust on my Royal Enfield Electra 5 speed 350 CC bike, it has old engine (NOT UCE). To my knowledge there are too many options like. Free flow mufflers, short bottle ...
1
vote
2answers
78 views

Can turbochargers cause engine damage gathering dirt and other particles from the air

I have been researching turbochargers and since they use outside air and exhaust to improve engine function couldn't that harm the engine? Or do I not understand the principle? Can't particules from ...
1
vote
2answers
487 views

straight pipes and carb rejetting?

I have a 1984 Honda GL 1200 standard wing and I am going to put straight pipes on it, however some forums say I will need to upjet the carbs, and others say I will not. Has anyone on this site ever ...
1
vote
1answer
256 views

How to install a California oxygen sensor into a federal catalytic converter assembly?

I have a 2000 Mitsubishi Galant ES 2.4L Engine with California emissions. Installed is a new federal catalytic converter assembly. The problem is that I do not know what kind of oxygen sensor to ...
1
vote
1answer
642 views

What could be causing a distinct exhaust drone in a tight band around 3250 rpms on a 2004 Subaru WRX?

EDIT: Additional information provided by LovelyWife(TM) - listening outside the car, she has proclaimed that the rattle / buzz / drone / resonance is coming from the front of the car and sounds like ...
1
vote
1answer
132 views

Volvos with the same parts as the Volvo 440 GL with 2 liter motor?

I have an old Volvo 440 GL (~1994) and I need to find a part to the exhaust system that costs the same amount as the car itself if bought from the Volvo company itself: this is the flange part in the ...
1
vote
2answers
3k views

2001 Audi A4 just got really loud

Alright, So I'm driving to work. I'm stopped at the red light to go on the freeway. It turns green so I accelerate. I'm accelerating more than I would on a regular street but I didn't floor it. ...
0
votes
1answer
339 views

Persisting 1998 Malibu Exhaust Problem

I am having a problem with a 1998 Malibu. I keep getting several codes but primarily P0420. I have replace the Catalytic Converter twice. Both oxygen sensors have been replaced. I have checked the ...
0
votes
1answer
438 views

What's the purpose of the cover on the catalytic converter?

On my 1990 Honda, it's falling apart. I'd like to just rip it off; will that cause any problems? More specifically: will the car pass New York state inspection with a missing cover?
0
votes
2answers
63 views

Stripped exhaust bolt

I got an exhaust I was putting on my car (2013 wrx) and had to disconnect the exhaust after the midpipe. The bolts were rusted so I pb blasted them, and then got one set of bolts off. When I went to ...
0
votes
1answer
63 views

Blue smoke upon acceleration and pinking

I have a Y12 Wingroad Nissan. While driving at 100km/hr and I stop, and begin driving again, I see a lot of blue smoke from exhaust for a little while. I also get a flat spot and pinking when ...
0
votes
2answers
64 views

1989 Nissan pintara problem

I have a 1989 U12 2.4l Nissan Pintara. It started running really rough one day and when I got home the exhaust manifold was glowing red hot. I changed the catalytic converter and it still is running ...