Exhaust crackle

[bfrank1972]

Originally Posted by Tcoat

As a Dad with a son that has advanced OPD (Obsessive personality disorder) which has been barely controlled by medication for the last 20 years I find nothing offensive in a casual joke that is not directed at an individual. You deal your way and let me deal in mine OK?

I am dealing my way, politely raising awareness. Nothing personal on you and no need to bristle - innocent jokes about correcting 'retard' to 'developmentally challenged' (and inferring that it's silly) hits home with me (and I'm sure others). Apologies if that offends you, last I will post about it, let the thread carry on...

[Tcoat]

Originally Posted by HKz

yep it certainly isn't in the same league as F-RS & bimmer pops but I do get a pretty respectable pop on some downshifts

Even the local Bimmer dudes pops may not be so annoying if it weren't for the horrible sounding Ebay exhausts they all seem to be running. There are four of them and I truly do not understand how they think those cars sound good in any manner. If you can afford a two year old BMW can't you afford to put a decent exhaust on the thing? Sounds like a bunch of fire crackers put in a tin can. They also can't sit and idle like a normal car but have to rev the things out every 5 seconds. Since they sit in the middle of the road and talk from car to car this gets old really fast. The funny part is they will creep on and off the street to not make much noise but then sit there for an hour revving it.

[bcj]

Bottle rockets.
Idling in the middle of the road yakking is an open invitation.

[Tcoat]

Originally Posted by bcj

Bottle rockets.
Idling in the middle of the road yakking is an open invitation.

Be afraid of lighting all the greasy man buns on fire and losing the whole neighborhood.

[humfrz]

All I can think of when I hear a car popping around, is that back-in-the-day, when a car did that, it was either out of time and/or had too many carburetors. -


humfrz

[HKz]

Originally Posted by Tcoat

Even the local Bimmer dudes pops may not be so annoying if it weren't for the horrible sounding Ebay exhausts they all seem to be running. There are four of them and I truly do not understand how they think those cars sound good in any manner. If you can afford a two year old BMW can't you afford to put a decent exhaust on the thing? Sounds like a bunch of fire crackers put in a tin can. They also can't sit and idle like a normal car but have to rev the things out every 5 seconds. Since they sit in the middle of the road and talk from car to car this gets old really fast. The funny part is they will creep on and off the street to not make much noise but then sit there for an hour revving it.

i'm not an expert on bimmer bros, only that they are allergic to turn signals, but perhaps that is their mating call to attract bimmerettes

[churchx]

No no. It's safety measure.

[Tcoat]

Originally Posted by HKz

i'm not an expert on bimmer bros, only that they are allergic to turn signals, but perhaps that is their mating call to attract bimmerettes

I have seen their Bimmerettes and you may be right!

[Will BRZ]

Originally Posted by Tcoat

I am also biased though since last month a bunch of BMW "tuner" bros moved into the house 3 doors down from me. I am sick and tired of listening to cheap ass fart can exhausts and cars tuned to make noise but not perform going POP POP POP POP at all hours of the day and night. My car is not quiet but damn those things are annoying.

Lol dude that's funny. Are they M cars? Never really liked how they sounded stock so I can just imagine how they sound with cheap ass exhausts lol combined with rev happy "tuner bros"... I feel for you man lol

[Will BRZ]

Our cars aren't really made for that. Yeah you could get a tune for it but like @Tcoat said, you're just asking for problems. Driven a few cars that crackle and pop and it's cool and all but it would get old super quick. I think for our cars a little burble and the occasional pop on a downshift is enough. You can get that with a muffler delete I believe and some other exhausts.

[Goingnowherefast]

Originally Posted by James H

I heard so many of the newer cars with loud crackle exhaust sound. Over the weekend, I heard this on a Jag F-Type, 911 and Ford Fusion ST. How do manufacturer do this? I recall reading something about they program added drops of fuel to go into the exhaust and detonate for the loud crackle pop sound. Any engineers amongst us to explain this to me.

Not sure what a Ford fusion ST is, but here's how the crackle and pops work:

When you tip out of the throttle, modern engines go into an "overrun" condition. In this mode, fuel is cut as it's not needed. You are instead using the cars motion to keep the engine running. The pops and crackles happen by the tuner retarding the timing during overrun deccel and adding a tiny bit of fuel.

This is not harmful to your car. Many OEM's do it on stock cars: Mostly notably Hyundai Veloster N, Ford Focus RS, F-Type etc.

Originally Posted by Timmy_Jones

And with many aftermarket tunes they can increase the volume and number of pops and crackles...I own a Focus RS and my tune has the additional pops. Its incredibly loud and borderline annoying. The boxer rumble is a much nicer noise than backfires and pops (yes, coming from a Focus RS owner)

That's probably because the Focus RS sounds like garbage lol. I have never heard a more "fake" sounding exhaust note pops ever.

If you guys want to hear properly done pops, look at any Veloster N/i30 N video.