[Nicklv_m3]

Originally Posted by Asmooth0101

This one? http://www.bigdaddiesgarage.com/mini-cat-cel-fix.html

Yes. They have straight and angled ones.
Straight ones will do just fine if so needed.

[Southern]

Originally Posted by Nicklv_m3

Think I’m one of the first few to have these installed already. Unless someone else out there has them.

They been on my car for over a week so far now and very happy so far.

Niiice! That's good to hear, better throttle response and exhaust sound as expected?

[Nicklv_m3]

Originally Posted by Southern

Niiice! That's good to hear, better throttle response and exhaust sound as expected?

Definitely more responsive and pull in the mid-upper range.
And louder for sure.

To note though I also have a full active Autowerke catback with their non-res X midpipe and Armaspeed CF intake.

So it all works well together

[Game Changer]

Originally Posted by Southern

Just ordered the Apexbuilt catted downpipes. Will report back after installed. FYI you get another 10% discount if you have a Govx affiliation via law enforcement or medical.

https://www.shopapexbuilt.com/collec...-hfc-downpipes

don't see the discount code, do you know if it is still available?

[Southern]

Originally Posted by Game Changer

don't see the discount code, do you know if it is still available?

Looks like it's still available

link

[brad65ford]

Pulled the triggered on some Activated Autowerkes Catted DownPipes. These look good, excited to remove the catless ones that are in there.

[djpapeleta]

Are high flow downpipes really needed for some bm3 or custom tunes. I don't know where I read or what video I saw but someone mentioned that the stock downpipe has pretty good flow and a high-flow down pipe is not needed.

[mike@x-ph.com]

Originally Posted by brad65ford

Pulled the triggered on some Activated Autowerkes Catted DownPipes. These look good, excited to remove the catless ones that are in there.

Congrats! Let us know how it goes.

Originally Posted by djpapeleta

Are high flow downpipes really needed for some bm3 or custom tunes. I don't know where I read or what video I saw but someone mentioned that the stock downpipe has pretty good flow and a high-flow down pipe is not needed.

Up to a certain point, the power is the same. But since it's more stress on the turbos with the stock downpipes.

After a certain power range, you'll start losing power w/ stock vs. high flow downpipes.

[brad65ford]

Originally Posted by djpapeleta

Are high flow downpipes really needed for some bm3 or custom tunes. I don't know where I read or what video I saw but someone mentioned that the stock downpipe has pretty good flow and a high-flow down pipe is not needed.

Not sure but I heard the stock cats are 700 or 800 cell, don't quote me though. Not sure how accurate this information is but when I spoke with AA today they stated their 400 cell gesi cats flow as well as others 200 cell cats. No clue really and I doubt any of us are going to know the difference. Regardless I just need catted dp's since I wanted to be "somewhat" legal-ish lol. Also not a fan of the smell and we know those cats are high quality. Bonus they had 1 in stock today and it shipped, just got confirmation it will be here tomorrow!!

[BMWM4CX]

Originally Posted by brad65ford

Not sure but I heard the stock cats are 700 or 800 cell, don't quote me though. Not sure how accurate this information is but when I spoke with AA today they stated their 400 cell gesi cats flow as well as others 200 cell cats. No clue really and I doubt any of us are going to know the difference. Regardless I just need catted dp's since I wanted to be "somewhat" legal-ish lol. Also not a fan of the smell and we know those cats are high quality. Bonus they had 1 in stock today and it shipped, just got confirmation it will be here tomorrow!!

Stock cats are 800cell

[mike@x-ph.com]

Originally Posted by brad65ford

Not sure but I heard the stock cats are 700 or 800 cell, don't quote me though. Not sure how accurate this information is but when I spoke with AA today they stated their 400 cell gesi cats flow as well as others 200 cell cats. No clue really and I doubt any of us are going to know the difference. Regardless I just need catted dp's since I wanted to be "somewhat" legal-ish lol. Also not a fan of the smell and we know those cats are high quality. Bonus they had 1 in stock today and it shipped, just got confirmation it will be here tomorrow!!

[brad65ford]

Originally Posted by mike@x-ph.com

Found this about the cat's themselves.

"GESI GEN2 400cpsi- catalytic converters rated for 1000hp. The new GEN2 series provides a significant improvement in exhaust flow over stock and offers the latest emissions technology. EPA Compliant catalytic converters have been third-party lab tested to meet or exceed local emissions standards in North America (excluding California) Ideal for forced induction and capable of withstanding up to 1,700F/ 925C core temp. "
https://gsportbygesi.com/high-perfor...er-technology/


I'm assuming its safe to say they are the best cats on the market. Now if I can get mine to fix correctly lol

[IDKBRO]

Originally Posted by BMWM4CX

Stock cats are 800cell

Is this confirmed fact ? Then I'm for sure going for a pair of high quality catted DP's to compliment my R44 exhaust.

[BMWM4CX]

Originally Posted by IDKBRO

Is this confirmed fact ? Then I'm for sure going for a pair of high quality catted DP's to compliment my R44 exhaust.

Yep, confirmed. Definitely 800cells

[mike@x-ph.com]

Originally Posted by IDKBRO

Is this confirmed fact ? Then I'm for sure going for a pair of high quality catted DP's to compliment my R44 exhaust.

Let's get you a set of downpipes then

[IDKBRO]

Originally Posted by mike@x-ph.com

Let's get you a set of downpipes then

How do I get Apexbuilt to LA

[mike@x-ph.com]

Originally Posted by IDKBRO

How do I get Apexbuilt to LA

We don't offer this brand, i can get you the active autowerke instead

[Nicklv_m3]

I will 100% vouch for my ApexBuilt GESI Catted Downpipes once again. Quality and fitment is top notch, GESI cats are the best. CEL free.

[brad65ford]

Originally Posted by Nicklv_m3

I will 100% vouch for my ApexBuilt GESI Catted Downpipes once again. Quality and fitment is top notch, GESI cats are the best. CEL free.

They do look nice.

[Southern]

Originally Posted by Nicklv_m3

I will 100% vouch for my ApexBuilt GESI Catted Downpipes once again. Quality and fitment is top notch, GESI cats are the best. CEL free.

Mine arrives Thursday, good to hear!

[cashzhang87]

Originally Posted by Info@mad-us.com

You can use our Catless Downpipes with these http://www.bigdaddiesgarage.com/angled-cel-fix.html.

We have many customers running with no cel.

i'm interested on your dp, one question, The O2 angled spacers you shared it's will be fit on g80 m3?but i know they have some different o2 spacers! i don't know which one is correct?

[Info@mad-us.com]

Originally Posted by cashzhang87

i'm interested on your dp, one question, The O2 angled spacers you shared it's will be fit on g80 m3?but i know they have some different o2 spacers! i don't know which one is correct?

I have only seen people use the straights