dchl21

guys,


my exhaust set up as follow


kleemann headers , no primary , second cats in place , res delete , c63 mufflers.








very recently I did the res delete and WOW it just woke up the beast, anyway so today I was driving in M mode in 3rd gear and let off the gas to slow down to a light, there was still a good distance till the light and all of a sudden 3rd gear dropped under 2k rpm and shifted into 2nd gear, then my car made this SEXIEST crackle pop ever..... something you would only hear on a modded m156.


now my question is .... it takes a long distance for 3rd to drop to 2nd automatically without braking and if I hit the brakes it wouldn't pop...but I need to hear that sexual noise more often.


I haven't had a chance to drive the car much after the res delete, so someone who have similar set up please share where your sweet spots are and how you would do it. thank you

StarvingArtist

Crackle and pop requires fuel,(or milk) maybe you can get it in your tune.

2000UZJ

Mine does not crackle when I use the buttons to downshift. Only when the revs drop and it kicks itself down. I've had best luck when the superchageer disengages when it downshifts. I've had some pretty epic burbles slowing down. Keep the revs low and let it downshift on its own

dchl21

right. but our gears are so long, it takes such long distance for it to drop.

RedBullJnky

I loved that sound when it did it on my old setup. It did it every time I slowed down. But I had no cats, no res, and no mufflers.

WANTED!!

Mine does it, and I still have the stock mufflers. Otherwise, I have Kleemans with the Fabberg midpipe. I love it.

RikTT

In M mode, 3rd, when slowing down & right @ 20mph it drops to 2nd & pop/gurgle. Definitely a good sound when running louder ex's or ex system piping mods.

dchl21

ya man... anywhere else ?

mAMG

Get Meisterschaft Exhaust

nanayaw6

Mine crackles every time I am slowing down in m mode under 2k rpm with or without brakes. It never does it in any of the other trans modes though.. With my dashdaq on I have noticed timing is around +20 ish whenever it does that so excessive timing retard. I'll pay more attention when I drive later today.

RikTT

I'm running the same setup as you but I have my reso still.

I'm contemplating on doing a true dual piping (like my old S4 Turbo I had) and might either throw in a low cell cat on each or bullet style resonator.

Moosepuck

'like'

DVC

Using HP Tuners you can exaggerate this by adding fuel and retarding spark under DFCO (decel fuel cut off). Maybe you can get your tuner to do the same on your 55K. That's given our ECU has that capability and that the parameters are adjustable.

dchl21

had them..sounds good but not for family...they only drone and doesn't crackle



I had the res in for awhile ...its nice but still very quiet even with c63 mufflers. our res is so big and heavy ... change it up .. you wont regret it.


thank you for the tip.. but ive a box tune from ec ....don't want to spent extras on custom tune unless if I add a tb or sc pulley later.

dchl21

do you have 2nd cats in place ?

Crankturner

Spoke to Jerry at EC about this, and he assured me there's no way to add crackle/popping on down shifts or decel in the tune for the 55's.

"No sir, it isn’t possible… The throttle blip logic doesn’t exist from the factory.


Thanks,

Jerry Thornton
Eurocharged Performance
www.eurocharged.com "

Can anyone else confirm this??

DVC

He may of misunderstood you as looking for a throttle blip on the downshift...which the 55 can't do.

You're looking for decel pop, no? That has nothing to do with the actual downshift process, per say. You can exaggerate this by manipulating fuel/spark on decel (engine breaking) when the throttle closes. Whether our ECU has these parameters, I don't know.