[F3thirty5]

I have an XI and was thinking about going with a set of Downpipes. I just got the AE Performance downpipe back exhaust system (didn't put it on yet).
Looks like AR makes a nice set of dp's but they are CATLESS. I am not too happy with the UR Catted option for the XI because I live in NY and don't want any rust issues.

I have the Dinan S2 tune. Is anyone running Catless downpipes and the Dinan S2 tune? Are the new versions of the 02 Sims working with the Dinan tune? Will I still throw codes or have any driveability, or computer issues? (Its a daily driver)

Before everyone says Procede or JB3, I am not interested in that route (at least not right now).

Any feedback would be appreciated!

THANKS!

[FazerBoy]

I assume you're going the Dinan route for the warranty (I am too).

If so, be aware that running any other engine-related modifications from stock together with the Dinan software will invalidate the Dinan warranty.

Jack

[JayKay335i]

Yes, you just shat out a bunch of money. The Dinan warranty is the same as BMW, use any parts that aren't theirs and they void your warranty.

[RambleJ]

Originally Posted by JayKay335i

Yes, you just shat out a bunch of money. The Dinan warranty is the same as BMW, use any parts that aren't theirs and they void your warranty.

+1

[JayKay335i]

Does this mean I can say JB3 now?

[socalsun]

I'm running the Dinan tune with AR catless and BMS sim, haven't had any issues, my sim is an older version, its been in and out and works like a charm. AR catless are the way to go, they fit the best.

[F3thirty5]

Yeah, got the Dinan tune within 6 months of buying the car. Its been trouble free and the performance has been great. No issues.

My take on the warranty is that I am thinking about downpipes and the remaining exhaust. If somehow the tune was responsible for a failure (outside of the exhaust), I don't think this voids anything. If I had an exhaust problem, or if I throw codes related to the removal of the cats, I wouldn't be taking it to the dealer or going to DINAN for a warranty fix anyway?

My question is more related to adding the catless downpipes and being able to put in a fix for the 02 sensors, coupled with the Dinan tune. From what I understand the JB3 and the Procede already built for it.

I don't want to go for another tune since I paid the $$$$$ already. Was hoping to get more out of the tune with a free flow exhaust.

[Syndicategt]

Originally Posted by cramp

I have an XI and was thinking about going with a set of Downpipes. I just got the AE Performance downpipe back exhaust system (didn't put it on yet).
Looks like AR makes a nice set of dp's but they are CATLESS.

AR makes both catted and catless, I'm running a set of AR catted now (along with AE catless) Sounds and performs great. And you know you want a JB3.

[F3thirty5]

AR doesn't make Catted for the XI, only Catless.

Yeah, saying Dinan around here gets people all jacked up!

Truth is I don't know if I want JB3 or Procede. I got Dinan so I want to work with it.

[JayKay335i]

Its pretty certain that if you were go back to Dinan with a problem they'd tell you to shove it. The dealer is another story. Some have had no problems when it comes to DPs while others have had dealers who didn't want to work on their car.

[skim7x]

Sorry for bringing this post back from the dead... just wondering if the OP ever got those DP's...

I have Dinan Stage II, but my question is... will adding DP's get you any more power? The Dinan Stg II software isn't written to take advantage of DP's, so you wouldn't really be taking full advantage of the DP's, right?

And yes, I know PROcede and JB have maps to utilize DP's, but I am really happy with my Dinan and would like to continue working with it, as did the OP. Thanks!

[mycoupe]

If you have any remaining warranty left on your dinan stuff it would be silly to risk that considering it's really the ONLY reason to pay the ridiculous pricetag associated with dinan parts. Modifying the exhaust will modify the response and therefor performance of the turbos. That is a very clear and obvious effect that dinan or bmwna could blame ANY potential engine or turbo related problem you may have down the road on. Just be careful and think about what you have, why you bought it, and then go get a procede. hahaha

[skim7x]

Originally Posted by mycoupe

If you have any remaining warranty left on your dinan stuff it would be silly to risk that considering it's really the ONLY reason to pay the ridiculous pricetag associated with dinan parts. Modifying the exhaust will modify the response and therefor performance of the turbos. That is a very clear and obvious effect that dinan or bmwna could blame ANY potential engine or turbo related problem you may have down the road on. Just be careful and think about what you have, why you bought it, and then go get a procede. hahaha

Haha obviously... I bought the dinan for the warranty which has paid off dividends for me as I'm on my 3rd set of turbo's... But anyways, my initial question remains... Would down pipes on a dinan stage 2 do anything?

[Yankees 2010]

I started a thread about this and if ur interested please send an email to dinan



Not sure about you guys but I wouldn't mind paying through the nose for downpipes that would be covered by warranty. Times are rough and dealers are becoming less forgiving about certain mods. This is the email I got back from Dinan.

Please email info@dinancars.com or go to their webpage and submit a request for those who are interested. http://www.dinancars.com/contact.aspx
__________________________________________________ _______________
Hi Marcus,

Honestly, you are one of only a very small number of people who have asked about downpipes. I am not saying there is not demand for them, only that we have not heard from these customers and we get a lot of emails everyday. If you know of other customers who would like downpipes please have them contact us to show their support for the product and if there are enough of them we will build it.

Let me know if you need anything else.

Thanks!

Brian
__________________________________________________ _______________



For those who are lazy here is a pre-written email you can send.

Subject - 335i e92 Downpipes

When are you guys coming out with downpipes for this car? This is one of the biggest item talked about amongst the community! At a reasonable price I would be all for it. Please keep me updated on this. Thanks

[skim7x]

So I know there are a handful of Dinan software customers who have had cattless DP's placed on their cars... There are a couple threads on this, but it's full of posts saying "You paid out the @$$ for Dinan, why void the warranty?" HAHA... understandably... but now my warranty is out anyways, and I'm looking to get DP's for now, and likely transition to Cobb Stage 2 once it gets finalized.

Any issues with DP's and Dinan Software?
Any significant gains? -- I saw another post somewhere that showed some pretty significant gains with addition of Cattless DP's and DCI's... just wondering if anyone else had this experience...

Thanks!

[Bmwguy11]

I would imagine you would still see a gain. Breathing better is breathing better in my book. And even if you don't gain anything, you are helping your turbos out with less backpressure, which I think even in and of itself can provide some gains or response via quicker spool, etc.

[nitehawk]

Originally Posted by skim7x

So I know there are a handful of Dinan software customers who have had cattless DP's placed on their cars... There are a couple threads on this, but it's full of posts saying "You paid out the @$$ for Dinan, why void the warranty?" HAHA... understandably... but now my warranty is out anyways, and I'm looking to get DP's for now, and likely transition to Cobb Stage 2 once it gets finalized.

Any issues with DP's and Dinan Software?
Any significant gains? -- I saw another post somewhere that showed some pretty significant gains with addition of Cattless DP's and DCI's... just wondering if anyone else had this experience...

Thanks!

I'm in the same boat - switching to Cobb soon. I installed the BMS DP FIX last week and my AR DPs are going in this weekend I've asked around and I understand there are no ill effects of catless DPs on the Dinan tune. Even a stock car will benefit from it to an extent.

Do you know if the dealer charges labour to flash the DME back to stock?

It's funny, the Dinan tune was supposed to be my only mod. Here I am now, getting all the bolt ons and switching tunes. I don't know if I will ever forgive myself for blowing $2k on a tune lol. It makes me feel a little better Cobb wasn't available back then.

[skim7x]

Originally Posted by nitehawk

I'm in the same boat - switching to Cobb soon. I installed the BMS DP FIX last week and my AR DPs are going in this weekend I've asked around and I understand there are no ill effects of catless DPs on the Dinan tune. Even a stock car will benefit from it to an extent.

Do you know if the dealer charges labour to flash the DME back to stock?

It's funny, the Dinan tune was supposed to be my only mod. Here I am now, getting all the bolt ons and switching tunes. I don't know if I will ever forgive myself for blowing $2k on a tune lol. It makes me feel a little better Cobb wasn't available back then.

Nice... I think I'm going to settle on some Macht Schnell DP's in the near future...

The dealer does charge labor to flash back to stock, unless there is some reason... do you have wastegate rattle? That's a good reason to get reflashed =P

[nitehawk]

Originally Posted by skim7x

Nice... I think I'm going to settle on some Macht Schnell DP's in the near future...

The dealer does charge labor to flash back to stock, unless there is some reason... do you have wastegate rattle? That's a good reason to get reflashed =P

No wastegate rattle...guess i'm one of the "lucky" ones

[nitehawk]

I cant imagine what they would charge for it lol...and I cant imagine it being better than what's on the market already. ie AR Design or Macht Schnell

[Brey335i]

Originally Posted by nitehawk

I'm in the same boat - switching to Cobb soon. I installed the BMS DP FIX last week and my AR DPs are going in this weekend I've asked around and I understand there are no ill effects of catless DPs on the Dinan tune. Even a stock car will benefit from it to an extent.

Do you know if the dealer charges labour to flash the DME back to stock?

It's funny, the Dinan tune was supposed to be my only mod. Here I am now, getting all the bolt ons and switching tunes. I don't know if I will ever forgive myself for blowing $2k on a tune lol. It makes me feel a little better Cobb wasn't available back then.

Dinan -> JB -> Procede -> Cobb. Be glad you haven't spent as much as me lol

[skim7x]

Originally Posted by 335coupe2007

if dinan would come out with downpipes for this car i would do it just for the warranty sake. I have the dinan stage 2 and afe dci... and thats it. I will email to see if its in the works. I dont see why they wont do it. I think alot of people would do it since it clearly helps the car/turbos with being more efficient.

This has been discussed already -- they won't do it because there isn't enough interest in DP's (per Dinan).

Originally Posted by nitehawk

I cant imagine what they would charge for it lol...and I cant imagine it being better than what's on the market already. ie AR Design or Macht Schnell

Arm + Leg... I'd stick with AR or MS