[ecitizen]

I have a 2018 M2. So I added a fabspeed sport cat and will be doing BM3 soon. A few questions. Do I need a FMIC for BM3 stage 2 or just the downpipe? Or do I have to stick with stage 1 without the FMIC?

Also, if I DIY a FMIC, can it be done without taking off the front bumper?

Thanks!

[Drop the hammer]

Bumper doesn’t need to come off. New one will go in the same way the old one comes out, just a bit more work to get it in, a second set of hands really helps, my car was on jack stands and I used one foot and both hands to get it in as you have to push and twist and maneuver and swear a few times until it just finds it way in. I just followed one of the how to’s.

I don’t know on the bm3 question

[akkando]

Originally Posted by ecitizen

I have a 2018 M2. So I added a fabspeed sport cat and will be doing BM3 soon. A few questions. Do I need a FMIC for BM3 stage 2 or just the downpipe? Or do I have to stick with stage 1 without the FMIC?

Also, if I DIY a FMIC, can it be done without taking off the front bumper?

Thanks!

I'm pretty sure you're supposed to have an FMIC for stage 2 as the stock cooler will just have you heat soak super fast. Might as well do chargepipe too as the stock one has been known to crack with higher boost, or even stock boost. Though most reports of cracking seemed to be on M235.

[Blurbo311]

I'm in a similar situation, 2018 M2, I already put the fabspeed sc downpipe. I have a dinan sport tuner but after some research I decided not to install it until I have an IC and chargepipe installed, they are on order.

From my understanding with the N55 M2, anytime you plan to run more than stock boost, an IC is a really good idea.

[5thGearPinned]

Absolutely upgrade your charge pipe otherwise it WILL break. If money is an issue, I would upgrade the cp first, and purchase an FMIC when funds allow but you will want to run some logs without the intercooler upgrade to monitor temps. My $0.02

[Lukeni]

Originally Posted by 5thGearPinned

Absolutely upgrade your charge pipe otherwise it WILL break. If money is an issue, I would upgrade the cp first, and purchase an FMIC when funds allow but you will want to run some logs without the intercooler upgrade to monitor temps. My $0.02

Yeah...standard chargepipe even fails with oem software

[magha]

Am going with a the VRSF catless DP, Race FMIC & CP for BM3 stage 2 this coming spring. will say car is quite the beast on bm3 stg 1 as it is

[///Cardia]

Originally Posted by ecitizen

I have a 2018 M2. So I added a fabspeed sport cat and will be doing BM3 soon. A few questions. Do I need a FMIC for BM3 stage 2 or just the downpipe? Or do I have to stick with stage 1 without the FMIC?

Also, if I DIY a FMIC, can it be done without taking off the front bumper?

Thanks!

To answer your question, just a downpipe will suffice for stage 2. Get the Intercooler though if you're going to seriously track it.

[Tricki]

Definitely get an Intercooler, IAT rise very quickly with the tiny stock one.
More important than the DP in my opinion.