My 2.8l pops on 93 pump gas but I was wondering in you guys’ experience, would a full straight pipe or a header dump make for more pops from the exhaust? Just curious, Thanks all

 

Why do you want it to pop? Also no need for 93 just run 87

 

Get a burble tune 🤣

 

Backfiring exhaust is dork.

 

I don't get why this is a thing at all (and I'm guessing from the responses others don't either). This is traditionally a sign that you're driving a broken POS.

Exhaust popping is a sign that there is something wrong, typically that there is extra fuel AND oxygen in the exhaust and it's lighting off and popping. Typically it's the result of an exhaust leak in front of the O2 sensor which is causing the exhaust to suck in outside air, the O2 sensor reads that the engine is running lean because of the air in the exhaust and dumps more fuel. Cars with leaks after the O2 sensor will do it when you let off the throttle because you get the exhaust gasses moving, close the throttle, create a suction and suck some air up towards the O2 sensor, and the same effect. You can accomplish something similar by just grounding out one of your sparkplug wires or otherwise causing a misfire (the air-fuel charge does not get lit in the chamber and ignites in the exhaust with a bang and sometimes will even shoot a fireball.

FWIW, this is hard on parts and doing it on purpose will eventually cause problems that will cause real misfires.

This does make a little bit of sense with a turbocharged small engine, especially on shifts to keep the turbo spooled, but you're driving a camaro- typically if you're going to do something stupid to make others think that you have more power than you do you'd be trying to make it sound like a bigger engine, not a smaller one.

 

Pops and burbles are different. Pops that are similar to micro backfires are all things terrible. Burbles and tiny pops are usually heard with big power and unrestricted exhaust. To me, it all sounds terrible. It's less terrible on a combo that is unintentionally doing it. Meaning, high compression motors will "burble" when unloaded and going back to idle (clutch stab). Don't be the guy that does it on purpose.

 

Is this the domestic version of the fart cannon on imports?

 

It's all in the tune. My engine has zero crackle on decel.

 

Are you the same poster who asked about wanting a giant blower sticking out of his car's hood a few weeks ago?

 

I don’t particularly care either way. I have a friend who has the same engine in his Pontiac and his is header dumped and pops like CRAZY. I was just curious if that’s a thing with all of these engines or if his needs some work lol

 

depends on the car. On a v6 Camaro? Agreed lol

 

nope but that would look super funny on a v6 lol

 

Lmao it definitely is

 

good to know. Thanks. I was only asking because a friend of mine has a Pontiac with the same engine as my Camaro and his is header dumped and pops like crazy. I’m talking a burble tune but it’s stock. I was just curious if that was a common thing with the 2.8 header dumped.

 

Removing the exhaust helps your ears to hear the distinct valve events of the engine. And at low engine speed the O2 sensor might be getting washed with fresh air causing the engine to run rich.

The gig is up though when you start to get into the throttle and people can tell it's just loud for the sake of being loud.

 

A long time ago, like 1998, I thought it was a good idea to install frame connectors that cut right through where the cat goes. After it was done I needed to go places but didn't have any way to connect the y-pipe to the rest of the exhaust. It was loud AF and not in a good way. I think I actually got pulled over but got out of it by telling the cop I was going to the exhaust shop, even though it was like 9p. When I got it back together with some creative hammering on flex pipe it was a bit louder than with the cat but certainly did not pop.

You want a popping exhaust, get a turbo motor and tune it for anti lag. I'm now running an 11.5:1 compression small block, long tubes, and a x-pipe exhaust now and there's no popping - as it should be.