[tufgsd]

ok I have researched various posts on this AE exhaust system. I have couple of questions for people that have this installed.

Which system did you buy (Hi-Flow Cats or Catless)?

First, how bad is the gas smell with the catless downpipes?

Also, someone told me that installing this system with catless downpipes makes it illegal for highway use (True or False)?

With the catless system, do you notice black soot?

Thanks for the help, just deciding on my next upgrade for exhaust.

I was also looking at AA Exhaust system.............

[Syndicategt]

1. Catless
2. No smell, there are cats on my DP's. Unless you are running full catless, all 4 cats removed, you will notice no smell.
3. False, some states are stricter than others (Californina). Just put your catted pipes on when going in for inspection. If you did get pulled over in a strict emmisions state with full catless a law enforcement officer may or may not notice anything.
4. Black spots depends on how rich/lean you are running. You won't notice anything different than stock pipes.

AE is a great exhaust!

[scottp999]

1) I bought a catless AE system(it only removes the rear pair of cats) there are still a pair of cats on the downpipes that you could do something with.

2) I have hi-flow cats in AR DP's so I don't know

3) Any cat modification for a street car is illegal at the Federal level. I was able to pass my state emissions test with what is on my car (ODBII test).

4) N/A

* AE's system bolts right on to the end of the downpipes. The last time I looked at the AA system instructions, you had to cut off the stock exhaust, meaning it is not bolt on.

[cn555ic]

If your going completely catless make sure you order an exhaust that has resonators built into the system or you might not like the exhaust note...There will be some rasp in the note at different rpms....With resonated exhaust system it will eliminate it....I just went catless and my exhaust didn't have resonators and it rasps in certain rpms ranges...I have since installed resonators and there is ZERO rasp now!!

[Mr. 5]

Originally Posted by cn555ic

If your going completely catless make sure you order an exhaust that has resonators built into the system or you might not like the exhaust note...There will be some rasp in the note at different rpms....With resonated exhaust system it will eliminate it....I just went catless and my exhaust didn't have resonators and it rasps in certain rpms ranges...I have since installed resonators and there is ZERO rasp now!!

Actually, I have run the AE exhaust with catless DPs and there is absolutely no rasp! It's loud at WOT but not raspy whatsoever.
I will agree that some systems have rasp, but not AE.

[jpsimon]

Originally Posted by Mr. 5

Actually, I have run the AE exhaust with catless DPs and there is absolutely no rasp! It's loud at WOT but not raspy whatsoever.
I will agree that some systems have rasp, but not AE.

+100. I've had the catless AE exhaust and catless downpipes for a while now with not a hint of rasp.

[cn555ic]

Well I guess its my CP-E exhaust...but if anyone has rasp with catless, resonators will help eliminate it all together...

[jpsimon]

Hey Craig, I just sent you an important PM

[Asclepius]

Im running catless dp's with the catless AE exhaust.>>no drone what so ever and not very loud at all. Very civilized exhaust note during regular driving and a very nice deep growl during wot yet still not too loud. Only prob I have with this exhaust is the black sut that gets all over the rear bumper just above the tips although it washes out. Also, people behind me always complain how bad it smells! I dont smell a thing from inside the car so I dont give a rats ass hehe!

[5soko]

doesnt the mufflers and the tips on the AE system almost act as a built in resonator of some sort.

[scottp999]

Originally Posted by 5soko335i

doesnt the mufflers and the tips on the AE system almost act as a built in resonator of some sort.

Yes, there is some material that lines them.

[cn555ic]

Originally Posted by scottp999

Yes, there is some material that lines them.

Hmm...based on how well my install went with the resonators for my exhaust systme, no wonder why AE exhaust sounds quiet and no drone for so many members after being totally catless...I think they are the only ones with the resonated tips!

[scottp999]

Originally Posted by cn555ic

Hmm...based on how well my install went with the resonators for my exhaust systme, no wonder why AE exhaust sounds quiet and no drone for so many members after being totally catless...I think they are the only ones with the resonated tips!

They say it is the muffler design, but you can also see a material on the inside of the tips that goes back into the muffler. They designed the muffler for the application. Worked out pretty well..

Nick won't say much more than this: " You may ask- Well, without an X pipe don't you need resonators to keep it from rasping?

No. We hand build each muffler for the AE Exhaust system specifically for the N54. These mufflers are not used on a single other system because they are specific to the car. This is what we attribute to the sound of the AE system, and lack of any sort of rasp. "

[cn555ic]

Originally Posted by scottp999

They say it is the muffler design, but you can also see a material on the inside of the tips that goes back into the muffler. They designed the muffler for the application. Worked out pretty well..

Nick won't say much more than this: " You may ask- Well, without an X pipe don't you need resonators to keep it from rasping?

No. We hand build each muffler for the AE Exhaust system specifically for the N54. These mufflers are not used on a single other system because they are specific to the car. This is what we attribute to the sound of the AE system, and lack of any sort of rasp. "

Hmmm....interesting!

[FLA 335]

AE auto catless here... good to go my friend..

stock down pipes... may pick up some AR catted downpipes though...

[cn555ic]

Originally Posted by FLA 335

AE auto catless here... good to go my friend..

stock down pipes... may pick up some AR catted downpipes though...

well its good to know that once you go catless DPs that it will sound nice based on the thread here!!! I had to go through all the shit and install resonators to my exhaust to get what you guys have!! lol....but then again when I got my exhaust AE still was about a year later to come out with their system!!!!

[mig28]

guys,

IM thingking to get the AE 1uad exhaust for my e93 335i...AE is full catback right?can it fit to e93?please advice

[cn555ic]

Originally Posted by mig28

guys,

IM thingking to get the AE 1uad exhaust for my e93 335i...AE is full catback right?can it fit to e93?please advice

Yes they make one fit just for the E93...call them up...

[mig28]

Originally Posted by cn555ic

Yes they make one fit just for the E93...call them up...

sounds good then..well actually im planning to order the eisemann exhaust but they dont have the catback system for the e93..only section 1 and 3..

compare with eisenmann, any inputs?

[cn555ic]

Originally Posted by mig28

sounds good then..well actually im planning to order the eisemann exhaust but they dont have the catback system for the e93..only section 1 and 3..

compare with eisenmann, any inputs?

Eisenmann is very pricey and the exhaust from all the reviews I hear is loud especially if you get the race exhaust...They don't have an application for E93...AE is a nice exhaust system and has one made for the E93 specific....All the positive feedback from this thread and others referring to the AE exhaust, I have heard nothing but positive things....

[Ghost170]

Originally Posted by tufgsd

ok I have researched various posts on this AE exhaust system. I have couple of questions for people that have this installed.

Which system did you buy (Hi-Flow Cats or Catless)?

First, how bad is the gas smell with the catless downpipes?

Also, someone told me that installing this system with catless downpipes makes it illegal for highway use (True or False)?

With the catless system, do you notice black soot?

Thanks for the help, just deciding on my next upgrade for exhaust.

I was also looking at AA Exhaust system.............

I have catless AE exhaust, sounds great and performs great! Does not smeel bad due to DP cats. If you do catless DP then there will be a smell. However there is not any black soot. Is it legal? well not illegal persay, but you won't pass smog ( just have to put stock DP back in) But you will gain most power with catless all the way through, since turbo loves air!! Hope this helps.

[mig28]

Originally Posted by cn555ic

Eisenmann is very pricey and the exhaust from all the reviews I hear is loud especially if you get the race exhaust...They don't have an application for E93...AE is a nice exhaust system and has one made for the E93 specific....All the positive feedback from this thread and others referring to the AE exhaust, I have heard nothing but positive things....

thnx so much bud! u are using AE as well?im gonna go for AE full quad catback then and thingking to order the meisterchaft section 1 too and AR catless downpipe as well