|
|
05-13-2017, 03:28 PM | #1 |
Private First Class
17
Rep 158
Posts |
Do i need a retune on ess supercharger w/ stock cats?
Hi all, I'm going to be taking off my AA x pipe w/ High flow cats. And putting a stock X pipe with OEM main cats back on and keeping the supercharger on the car. What will happen if i do this without getting an ESS re-tune for stock cats? I would eventually get a re-tune if i keep the stock X pipe on but i want to test it out, will the car have any issues or throw any codes?
|
05-13-2017, 10:51 PM | #2 |
///M Powered for Life
11478
Rep 10,328
Posts |
Probably nothing, but ESS will usually provide the tune you need for free
|
Appreciate
0
|
05-14-2017, 03:06 PM | #3 |
First Lieutenant
152
Rep 392
Posts |
What ess kit you have?
625 and 650's recommend HFC's. Might want to inquire about that. Lessor kits shouldn't make any difference in the tune. |
Appreciate
0
|
05-14-2017, 03:15 PM | #4 |
Lieutenant
47
Rep 507
Posts |
you dont have to change the tune, did the same thing on mine.
You will gain soem torque midrange and lose some power at high rpm
__________________
M3 E92 ESS VT-625
|
Appreciate
0
|
05-14-2017, 03:55 PM | #5 | |
Boost Addict
174
Rep 460
Posts |
Quote:
__________________
F80 BMW M3 DCT YMB
2008 BMW E93 6MT, Ess VT2 625 |
|
Appreciate
0
|
05-14-2017, 04:26 PM | #6 |
Captain
470
Rep 988
Posts |
If you are putting the stock xpipe and stock cats back on to pass smog (the obd testing) then you'll need a tune to get your emissions readiness to turn back on. (You'll still need a smog tech however to turn a blind eye to the supercharger under the hood)
|
Appreciate
0
|
05-14-2017, 05:43 PM | #7 |
Private First Class
17
Rep 158
Posts |
thanks for the replies,
not worried about emissions/state inspection. doing it to see if it will resolve a exhaust vibration. I have an ESS595 kit. So I won't need to worry about anything or even get a retune for stock cats? |
Appreciate
0
|
05-14-2017, 06:51 PM | #8 |
Major
109
Rep 1,292
Posts |
You will be fine but big loss in power!
|
Appreciate
0
|
05-15-2017, 03:25 PM | #10 |
Brigadier General
1421
Rep 3,001
Posts |
Running stock cats on a supercharged S65 is pretty bad... You lose a lot of power, which pretty much defeats the purpose of getting a Supercharger. If anything, use high flow cats!
|
Appreciate
0
|
05-15-2017, 03:27 PM | #11 |
Lieutenant Colonel
420
Rep 1,678
Posts
Drives: 2011 MCB E92 M3
Join Date: Jun 2013
Location: Austin, Texas
|
I'm assuming you lose 25-30HP by running stock cats. I really like my exhaust and it can't be ran with HFC's (I tried and it's unbearable). Not to mention I have emissions testing every year so swapping them out would be a pain. The car is insanely faster than when I was stock =).
__________________
2011 Monte Carlo Blue E92 ///M3 - ESS VT2-625
|
Appreciate
0
|
05-15-2017, 03:57 PM | #12 | |
Brigadier General
1421
Rep 3,001
Posts |
Quote:
|
|
Appreciate
0
|
05-15-2017, 04:45 PM | #13 | |
Private First Class
17
Rep 158
Posts |
Quote:
|
|
Appreciate
0
|
05-15-2017, 04:58 PM | #14 | |
Lieutenant Colonel
420
Rep 1,678
Posts
Drives: 2011 MCB E92 M3
Join Date: Jun 2013
Location: Austin, Texas
|
Quote:
Listen to these -
__________________
2011 Monte Carlo Blue E92 ///M3 - ESS VT2-625
|
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|