What is wrong ?
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From: Southern California
What is wrong ? Sometimes, or a lot of times, when I start my car, my exhaust pops. I still have cats and yet I hear popping. Is this unburnt fuel in the exhaust ? If it is then it's probably a tuning issue but can anything mechanical cause the car to idle rough and pop ?
thanks
thanks
well if you had a carb then i'll say yes it's mechanical, but since you got fuel injection, unless somehow the cats have something to do with it, i'll say hook it up to a comp and check the tunning
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From: Eastern MA
Originally Posted by Full-Force
alot of exhaust on cars pops until it gets warmed up especialy if it still has cats
Originally Posted by 1genCamaro
all the more reason to not have cats
(I know this is a hot topic so lets just agree to disagree.)
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Originally Posted by VIP1
This is new to me.
Besides CATs are there for emissions reasons. I'd rather leave mine on. They help cleanup the exhaust and dont rob much power, especially high-flowing ones. Plus they are required to pass inspection, especially in the strict states (MA, CA, ...)
(I know this is a hot topic so lets just agree to disagree.)
Besides CATs are there for emissions reasons. I'd rather leave mine on. They help cleanup the exhaust and dont rob much power, especially high-flowing ones. Plus they are required to pass inspection, especially in the strict states (MA, CA, ...)
(I know this is a hot topic so lets just agree to disagree.)
that's because you live in MA if you lived in the great state of TX it'd be a whole lot more common
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Verdad Gallardo Copy & Paste Moderator
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From: Eastern MA
Originally Posted by 1genCamaro
that's because you live in MA if you lived in the great state of TX it'd be a whole lot more common
I know you disagree/dont care/whatever so...
Originally Posted by VIP1
(I know this is a hot topic so lets just agree to disagree.)
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Originally Posted by Fierce-LS1
Sometimes, or a lot of times, when I start my car, my exhaust pops. I still have cats and yet I hear popping. Is this unburnt fuel in the exhaust ? If it is then it's probably a tuning issue but can anything mechanical cause the car to idle rough and pop ?
thanks
thanks
Originally Posted by Mycol
I have a 99 LS1 TA WS6, otherwise stock except for Lid and Loudmouth exhaust. No mufflers, just a resonator...my car pops when getting off the throttle and pulling out of gear coasting to a stop...not a loud pop, just a lil bit of a popping grumble...honestly, i like it...but what is causing it is unburnt fuel in the headers, becoming reignited again a few strokes later. Most likley caused from running a bit to rich i would assume. some tuning should reduce, or eliminate it...i know i need to get my car tuned
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From: Eastern MA
Originally Posted by LiqudFire350
as for the cats situation ive heard we are the only country to have emissions laws
ah, well i did say that ive heard, i didnt know for sure, and another thing ive heard is that emissions is europe isnt like ours, they focus on makeing the cars clean from the factory
Originally Posted by TheBlurLS1
i dont have a loudmouth, i have a crap-master, and mine pops like crazy when its cold.
and sounds great, so it cant be that bad..... can it???? Copy & Paste Moderator
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From: Eastern MA
Originally Posted by LiqudFire350
another thing ive heard is that emissions is europe isnt like ours, they focus on makeing the cars clean from the factory
That doesnt make any sense...
Here, were have to produce cars cleaner from the factor too.
...Anyway, we are getting way off topic. The post-starter's question was about a popping sound coming from the exhaust.
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Probably caused by a rich condition at startup. If you have hptuners or another scan tool you can check it. It is not that big of a deal. I would just wait until i got some more mods before a tune.
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From: Southern California
Originally Posted by 2MuchRiceMakesMeSick
Probably caused by a rich condition at startup. If you have hptuners or another scan tool you can check it. It is not that big of a deal. I would just wait until i got some more mods before a tune.
I also have smoke coming out of the exhaust during startup, quite a bit actually
Now how normal is that ? 