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M2 Technical Topics > N55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > Downpipe/Intercooler/Tune Questions...

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      06-24-2016, 12:00 PM   #1
richinla
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Downpipe/Intercooler/Tune Questions...

Probably stupid questions, but.. this is my first ///M and I plan on doing a few minor (I think) things...


First, I talked to my service tech and he said they were ok with installing and would 'look the other way' if I brought it in for issues later..

I want to change the downpipe for sure.. I am looking at the VRSF one. I also want to change the intercooler (not sure which) and get the JB4 tune..

So I guess my questions are:

If I leave everything else stock and only change the above, what benefits will I see?

Is that a good choice in downpipe?

What intercooler should I be looking at?

What JB4 do I get? I looked and did not see one for this car specifically..

Again, sorry if these are dumb questions, but please help if you can..
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      06-24-2016, 05:25 PM   #2
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Tiago@VRSF makes a nice and affordable set of downpipes. As for intercooler we offer Wagner intercoolers that do not require extensive changes such as others incase you want to revert back to stock or sale the car. We also offer Jb4 and proper ECU tuning if you want to go down that route. Shoot me pm
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      06-27-2016, 02:31 PM   #3
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Quote:
Originally Posted by TTFS
Tiago@VRSF makes a nice and affordable set of downpipes. As for intercooler we offer Wagner intercoolers that do not require extensive changes such as others incase you want to revert back to stock or sale the car. We also offer Jb4 and proper ECU tuning if you want to go down that route. Shoot me pm
I ordered a VRSF catless and going that route for now is it okay to run car without a tune for now till I get one? I'm afraid of AFR and ecu adjustments or will it learn to correct it?
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      07-13-2016, 10:02 PM   #4
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Originally Posted by kevlee23 View Post
I ordered a VRSF catless and going that route for now is it okay to run car without a tune for now till I get one? I'm afraid of AFR and ecu adjustments or will it learn to correct it?
You're in PA, just hit up @EuroDynamic @CBTuningeuro on instagram or give them call!
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      07-13-2016, 10:47 PM   #5
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I've heard two conflicting things. The Active Autoworks guys wrote that the ECU is smart and will compensate no problem. The Fabspeed guys definitively and strongly advised against running a catless DP with no tune. I'm not sure what to think personally, but the fact there's conflicting arguments from reputable shops in the first place makes me not want to take any chances.
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      07-14-2016, 05:34 PM   #6
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Quote:
Originally Posted by LBBDrew View Post
I've heard two conflicting things. The Active Autoworks guys wrote that the ECU is smart and will compensate no problem. The Fabspeed guys definitively and strongly advised against running a catless DP with no tune. I'm not sure what to think personally, but the fact there's conflicting arguments from reputable shops in the first place makes me not want to take any chances.
Active is right

That being said you wont be taking 100% advantage of the downpipe if car is stock

Start with a JB4 , add VRSF downpipe + Wagner Intercooler
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      07-15-2016, 10:23 AM   #7
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Quote:
Originally Posted by LBBDrew View Post
I've heard two conflicting things. The Active Autoworks guys wrote that the ECU is smart and will compensate no problem. The Fabspeed guys definitively and strongly advised against running a catless DP with no tune. I'm not sure what to think personally, but the fact there's conflicting arguments from reputable shops in the first place makes me not want to take any chances.
Mike in Marketing here, and this is my stance on it: We do not advise going catless without a tune due to a resulting check engine light. We work with a lot of high end marques and a CEL can often be a major situation for our customers. We are always up front with any potential risks or unpleasant resulting scenarios.

You will make extra power and get increased throttle response, absolutely, but a tune will make the most of the increased exhaust flow and extract extra power. We aren't biased as we do not offer a tuning solution for the M2, at this time at least.
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