[335dsleeper]

Originally Posted by rulonger

How involved is this process? If I have access to a welder, could it be a DIY project one Saturday?

Could you confirm basic steps?
1- drop exhaust completely
2- cut open SCR
3- clean out the material
4- weld it back shut
5- re-install exhaust

Any pointers would be appreciated.

If others think it is too much for a DIY, could they give me an estimate that I could use to negotiate with a local muffler shop?

Honestly, it's literally like and hr worth of work.

-put on lift/ jack stands
-remove 8 torx (T45 i think) from the plate on chassis below exhaust.
-remove 8 bolts holding the exhaust on
2xinverted torx on the mufflers mount
2x18mm nuts near the diff
2x13mm near the transmsision
2xnuts at the DPF flange
2x8mm bolts for the rear NOX sensor mount. Its just above the aluminum driveshaft shielding. Just trace the red NOX sheath.
-push exhaust towards the rear of the car to remove. The exhausts much lighter than it looks.
-Place on stand or floor
-With an angle grinder, cut a square on top of the SCR
-I used a hammer/crow bar to remove the SCR and a shop vac to clean the remaining debris out of the exhaust.
-once it was removed, I used a grinder to clean the edges I cut.
-Weld together. I used an old mig welder with the incorrect gas for stainless.
-Once it cools, reinstall exhaust.

Done & Done!

I do not recommend gutting this using any other method as there is matting that surrounds the SCR element. You have to remove all of it or it will be a restriction as it get blown downstream.

[Mark M]

Originally Posted by 335dsleeper

Honestly, its literally like and hr worth of work.

-put on lift/ jack stands
-remove 8 torx (T45 i think) from the plate on chassis below exhaust.
-remove 8 bolts holding the exhaust on
2xinverted torx on the mufflers mount
2x18mm nuts near the diff
2x13mm near the transmsision
2xnuts at the DPF flange
2x8mm bolts for the rear NOX sensor mount. Its just above the aluminum driveshaft shielding. Just trace the red NOX sheath.
-push exhaust towards the rear of the car to remove. The exhausts much lighter than it looks.
-Place on stand or floor
-With an angle grinder, cut a square on top of the SCR
-I used a hammer/crow bar to remove the SCR and a shop vac to clean the remaining debris out of the exhaust.
-once it was removed, I used a grinder to clean the edges I cut.
-Weld together. I used an old mig welder with the incorrect gas for stainless.
-Once it cools, reinstall exhaust.

Done & Done!

Now that I have the Bohl downpipe installed, I need to do this.

I really wish there was the option of putting something in the empty SCR box that would keep the quiet stealth sound. With this as my daily driver, I am not excited about big turbo whistle sound.

Has anyone considered baffling the innards?

[335dsleeper]

Originally Posted by Mark M

Now that I have the Bohl downpipe installed, I need to do this.

I really wish there was the option of putting something in the empty SCR box that would keep the quiet stealth sound. With this as my daily driver, I am not excited about big turbo whistle sound.

Has anyone considered baffling the innards?

You could just add a vibrant resonator somewhere. Should reduce the noise a bit.

[HeatherM35d]

The cross member is a T-50 and depending on 2009-2011 it'll have 8 or 4 bolts.. Old models have more.. No idea why they used a smaller cross member on newer mods.. Best I can figure it's to hold the heat shield in place.. Anyway those t-50 bolts have a habit of breaking my torx sockets.. Got a whole pile of broken t-50s from these cars and that stupid cross member

[locolobo]

It seems lately most people are favoring the BPC tune, the one Heather is using, but I did already pay for an Ecotune. It was $900.

Now the vendor in NJ is apparently no longer supporting it and it never worked correctly. I still get CELs that I paid to have tuned out. Is anyone in USA successfully running Ecotune software with complete ABC deletes? If so it might be worth shipping to Scotland to save $1,200.

If I am stuck paying for a new stage 2 tune, are they all equivalent? BPC, Renntech, Megaspeed, Malone? Others?

Probably have to ship it somewhere this week and make a decision

[335dsleeper]

Originally Posted by HeatherM35d

The cross member is a T-50 and depending on 2009-2011 it'll have 8 or 4 bolts.. Old models have more.. No idea why they used a smaller cross member on newer mods.. Best I can figure it's to hold the heat shield in place.. Anyway those t-50 bolts have a habit of breaking my torx sockets.. Got a whole pile of broken t-50s from these cars and that stupid cross member

Yea, you're right. T50 and yea, they're tough... I know my 09 has 8. I lucked out and was able to get through the removal without breaking my socket. ha

[335dsleeper]

Originally Posted by locolobo

It seems lately most people are favoring the BPC tune, the one Heather is using, but I did already pay for an Ecotune. It was $900.

Now the vendor in NJ is apparently no longer supporting it and it never worked correctly. I still get CELs that I paid to have tuned out. Is anyone in USA successfully running Ecotune software with complete ABC deletes? If so it might be worth shipping to Scotland to save $1,200.

If I am stuck paying for a new stage 2 tune, are they all equivalent? BPC, Renntech, Megaspeed, Malone? Others?

Probably have to ship it somewhere this week and make a decision

I do not have any experience with the other tunes/tuners but, I can say that Bob @ BPC has been great! My stage 2+ tune is spot on with ZERO issues!

[HeatherM35d]

Originally Posted by locolobo

It seems lately most people are favoring the BPC tune, the one Heather is using, but I did already pay for an Ecotune. It was $900.

Now the vendor in NJ is apparently no longer supporting it and it never worked correctly. I still get CELs that I paid to have tuned out. Is anyone in USA successfully running Ecotune software with complete ABC deletes? If so it might be worth shipping to Scotland to save $1,200.

If I am stuck paying for a new stage 2 tune, are they all equivalent? BPC, Renntech, Megaspeed, Malone? Others?

Probably have to ship it somewhere this week and make a decision

I've run a lot of different tunes on 35d platforms

[BEWWWM]

Correct me if I am mistaken, but BPC is putting down the best #s from what I've seen.

The involvement on the forum and passion of Mr. Bob for tuning earned my business.

[HeatherM35d]

Originally Posted by BEWWWM

Correct me if I am mistaken, but BPC is putting down the best #s from what I've seen.

The involvement on the forum and passion of Mr. Bob for tuning earned my business.

Yes BPC has the highest numbers.. Let's see what Bohl and BPC can do together

[locolobo]

If I didn't have $900 in with the other vendor the decision would be easier. Waiting to hear back from them now.

[335dsleeper]

Originally Posted by locolobo

If I didn't have $900 in with the other vendor the decision would be easier. Waiting to hear back from them now.

Sometimes it's better to just cut your losses...

[BB_cuda]

Originally Posted by 335dsleeper

Sometimes it's better to just cut your losses...

Loco,
I agree with sleeper. I ran Ecotune first and now running JR Auto/Jarek one. You will go through a lot to prove to Ecotune that things are really happening on your car. Several here were asked to give Stan data to proving the EGR was not off. Other examples but I've forgotten them (urea continuing to spray). Several of us original 10 just walked and switched over to North of the border option and haven't looked back. One of the 10 (that I know of) has progressed further to BPC. Now that Dallas, Georgia is an option for me, I won't have to pay through the nose for back and forth shipping.

You have to ask yourself if not spending more money is worth shipping your ECU back and forth to Glaskow and possibly have to continue sort through things further.

[HeatherM35d]

Originally Posted by BB_cuda

Loco,
I agree with sleeper. I ran Ecotune first and now running JR Auto/Jarek one. You will go through a lot to prove to Ecotune that things are really happening on your car. Several here were asked to give Stan data to proving the EGR was not off. Other examples but I've forgotten them (urea continuing to spray). Several of us original 10 just walked and switched over to North of the border option and haven't looked back. One of the 10 (that I know of) has progressed further to BPC. Now that Dallas, Georgia is an option for me, I won't have to pay through the nose for back and forth shipping.

You have to ask yourself if not spending more money is worth shipping your ECU back and forth to Glaskow and possibly have to continue sort through things further.

I'll tell you what, the customer service and overall communication at Bimmer Performance Center is best around. Bob is building tunes and on this forum answering questions and giving data like no tomorrow, and Randall is on his game with the phone calls.

[Venom107]

Originally Posted by HeatherM35d

I'll tell you what, the customer service and overall communication at Bimmer Performance Center is best around. Bob is building tunes and on this forum answering questions and giving data like no tomorrow, and Randall is on his game with the phone calls.

+1

[rspring]

I have a spare DDE with a BPC 2+ tune in it waiting for me at home. I will be able to compare the tune to my JR 2+ this weekend.

[335dsleeper]

Originally Posted by rspring

I have a spare DDE with a BPC 2+ tune in it waiting for me at home. I will be able to compare the tune to my JR 2+ this weekend.

That should be interesting. Are you going to dyno or?

[rspring]

Not yet, whenever I can get it up to BPC I'll get it on the dyno. That will also be after Dave's exhaust.

[HeatherM35d]

Originally Posted by rspring

Not yet, whenever I can get it up to BPC I'll get it on the dyno. That will also be after Dave's exhaust.

You've still got the scr in place don't you?

[tek4tex]

Originally Posted by locolobo

If I didn't have $900 in with the other vendor the decision would be easier. Waiting to hear back from them now.

I'm a recent satisfied customer of Jess and BPC. I took my car for the dyno tune (which was worth the trip) and had a Raleigh muffler shop do the SCR gutting. They charged me $200 which seem fair but I think he was pissed when he found no platinum after cutting it open.

[HeatherM35d]

Originally Posted by tek4tex

I'm a recent satisfied customer of Jess and BPC. I took my car for the dyno tune (which was worth the trip) and had a Raleigh muffler shop do the SCR gutting. They charged me $200 which seem fair but I think he was pissed when he found no platinum after cutting it open.

I believe the catalyst substrate is copper zeolite

[BB_cuda]

Originally Posted by rspring

I have a spare DDE with a BPC 2+ tune in it waiting for me at home. I will be able to compare the tune to my JR 2+ this weekend.

Where do you get a spare DDE from? I'd like to do the cloning.