CBE w/no or least drone?

ImportConvert

Well...I ordered the filters, too. I will research it further, but the smooth bellows or whatever are g2g.

ped

This is absolutely incorrect. I just got a FI catback with 18" resonator installed early this week and it drones like CRAZY between 2000-2900 RPM or so under load. Most prominent when you leave the car in auto (D) which seeks the tallest gear always, and then either climb a small incline or generally just speed up slightly (accelerator pedal down about 1/4 to 1/2) without pushing hard enough to force a downshift to a lower gear.

This problem is easily solved by using a Helmholtz resonator attached 90 degrees off of each pipe, but for whatever reason FI didn't take this issue seriously and as a result their exhausts have this problem. I am in fact going to take a loss by having to pay labor twice to have the FI exhaust removed and the original up back on, this drone is so annoying. Telling people they have no drone is causing people to waste money only to find out the truth.

richiivu

I have ARK DT-S exhaust, there is practically NO DRONE on highway. It sounds great on WOT, however its pretty quiet, its distinctively louder than stock exhaust, but not a dramatic change. The tone/note has a really nice low grumble/growl.

axmea?

Are you going to be doing this every chance you get? Give it up already. Buyers remorse sucks but man..........

__________________

Romulus1

If you believe there's drone and chris says there's not then i believe he was actually correct in saying drone is subjective. I certainly believe drone is a subjective topic and i wanted little to none in my exhaust. I had the FI CF exhaust with 12" resonators paired with motordyne art pipes and noticed VERY little drone and was extremely pleased with the exhaust entirely. That was my 4th exhaust set up on a VQ engine. Your tangent is noted by the entire community. Go fix your problem please instead of complaining in every thread on the forum.

__________________
11 SR 370Z Sport 6MT - Sold
03 Escalade AWD - Sold
13 Silverado LTZ Z71 Crew Cab

chii370

I second rich on this one, I also have the ARK DTS w/o HFC and it is 100% flawless. makes arguably the best deep growl of any exhaust available, zero drone. you can hardly hear it if your cruising at 65 on zero incline unless you get on it a little. and it doesnt make that wheezing rasp noise when you let off the peddle. also it makes a nice gurgle/pop sounds on decel kinda like a Mercedes AMG. Makes it sound very aggressive and mean.

but, its a different animal under load. if you accelerate hard it goes from quiet....... to OMFG loud. echoing off buildings and nearby cars. its about 104 db roughly under load. and they claim 89 at 3k, which is probably about right.

chii370

And Romulus, honestly? Drone is a thing. Its not subjective. If you can hear the car go RRRRRRRRRRRRRRRR with a constant tone while at cruising speed, and its a buzz/moan noise and not a nice growl like at idle.....thats drone. I would be pissed too if people who didnt know wtf it was, or just wanted to fanboy support a product they own, flaws and all....told me there was no drone and there was. Some of these exhausts are HEADACHE INDUCING. The ark dts is inaudible at speed unless you are giving it gas, in which case u can here a faint whir noise, then it screams like hell when u gas it. Drone is the constant annoying monotone sound of the exhaust resonating in the cabin, some people actually LIKE that sound as they think it sounds bad ***. And it DOES, but not when ur driving on the highway for 2-3 hours, it makes u wanna drive the car off a cliff. My 401 74 hornet does the same thing but thats just because its 500 hp NA and loud. I HATE driving it on the highway.

But to be fair, if you want to hear absolutely zero cabin noise at cruise....then dont go aftermarket. There isnt a single one that doesnt drone a LITTLE.

Romulus1

Yes honestly, are you trying to tell me what I can and cant hear and how to perceive things? I didn't notice much in mine. It IS a subjective issue. I'm not fan boying my set up, i had several and i liked them all but for the price i recommend FI if youre spending 1200 on and exhaust as its a quality product with quality customer service.

People can hear different frequencies of noise that others cant so it would affect some more than others. Which goes with if you cant hear something how do you say it is or isnt there? So I stand by it. You may hear it and it bother you, I do not and it doesnt. Subjective

__________________
11 SR 370Z Sport 6MT - Sold
03 Escalade AWD - Sold
13 Silverado LTZ Z71 Crew Cab

chii370

I guess if your hearings been damaged that much then yeah, your right. Generally speaking 99% of humans hear in or around the exact same freq range. Otherwise there wouldnt be a thing called a hearing test, it would give completely inaccurate unacceptable results every single time for each different person. Its subjective to a point of TOLLERANCE is more to the point. How high is your "annoying" level. But common sense comes into play too. We are talking about if you can hear it or not, not if it bothers u. Drone is a physical provable occurance that could be monitored if one so chose. Aka how much NOISE its making in cabin at speed in a constant tone. If you cant hear that...i dont know what to say.

Romulus1

So basically yes, you are telling me what I perceive. I will continue to stick with, with my set up, casual conversation was 100% easy to carry on with who ever was in the car with no yelling over cabin noise or complaints about the "drone" even on 4-6 hour trips. I guess the 1% of the 100's of owners that comprise this exhaust all have severely damaged hearing. Good talk brah


Also note, I never attested to that exhaust by itself. I always point out that mine is paired with art pipes so mine made almost no noticible drone.

__________________
11 SR 370Z Sport 6MT - Sold
03 Escalade AWD - Sold
13 Silverado LTZ Z71 Crew Cab

chii370

What is the db lvl of the fi exhaust anyway? Its louder than my ark right? 89 at 3k and about 106-108 under load.