[Ramppo]

Hi guys, i drive 335i MSD81 with dinan S2 package (include stage 3) now i am planing to buy catted downpipes so the question is which downpipe dont cause problems/issues/codes with my mod? and if i for some reason end up buyeing the ones which cause issues can i get rid them by buyeing the 02 simulator?

[JB335]

I believe DINAN may not continue your warranty through them if any other mods are on your car. I could very well be wrong. Im not positive.

[ToadHollow]

The way I see it, you have 2 options and both are able to void your warranty ......

1) You install "catted" DP's (meaning primary cats are in place). Additional 02 sims are not needed as the "primary cats" are in place. This will enable you to have no emissions problems. However, if you ever have a runnability problem that would cause Dinan to step in; they will void your warranty IF they see them installed. Remove them before reporting any "runnability" problems to Dinan or your local dealer.

2) You install "catless" DP's (primary cats are absent). You WILL need to have 02 sims in place to keep the car from throwing emissions codes. Your warranty can become void by Dinan or your local dealer upon discovery of them installed. REMOVE THEM BEFORE ANY DEALER TRIPS, PERIOD. I would be more on edge with the car going to the dealer with this setup than the above. IF you choose not to have the 02 sims in place then you WILL ALWAYS have issues in dealing with anything/anyone from the dealer to Dinan to your state's emissions station.

Now then, I also have the Dinan flash amongst many other mods in place AND will soon have catted DP's installed. If I ever am afflicted with a problem with the car that would cause the dealer (or Dinan) to investigate; you can bet your ass there will be nothing indicating the DP's were ever installed on my car ......... removed beforehand.

As a side note; I have never uninstalled/removed ANY mods from my car in preparation for a trip to the dealer. The car has endured diagnostic checks several times throughout this past year and I have NEVER received any warnings or static for it. Then again, if catastrophic failure rears it's head I will remove any performance mods I now have installed just to CMA.

And for anyone thinking I'm deceiving the dealer ........... they already know the car and everything that is currently installed. If the mods aren't installed on the car when they have posession of it they can't blame the problems on the mods.

[335iheLLraiseR]

Woah, yup that about sums it up. Might as well close the thread now,LOL.^^^^^^

[ToadHollow]

Originally Posted by 335iheLLraiseR

Woah, yup that about sums it up. Might as well close the thread now,LOL.^^^^^^

........... gotta be thorough these days!

[coolguy]

Originally Posted by ToadHollow

........... gotta be thorough these days!

I am in the same boat as u Did u find anything in the catch can? I am yet to order one.

[ToadHollow]

Originally Posted by coolguy

I am in the same boat as u Did u find anything in the catch can? I am yet to order one.

After a bit more than 8 months of usage/ 2 oil changes ....... there was enough to fill a shot glass. I was pleased.

[stimpy]

Hey Toad,

Wouldn't you worry that your account has been flagged with "This dude is modded out" and if a big warranty fix comes up - they will bust it on you regardless if the mods are present or not?

Remember, they can give you the big F-U for whatever reason they want and then it's on your shoulders to take them to court (lawyer fee's, court fee's, etc).

Originally Posted by ToadHollow

The way I see it, you have 2 options and both are able to void your warranty ......

1) You install "catted" DP's (meaning primary cats are in place). Additional 02 sims are not needed as the "primary cats" are in place. This will enable you to have no emissions problems. However, if you ever have a runnability problem that would cause Dinan to step in; they will void your warranty IF they see them installed. Remove them before reporting any "runnability" problems to Dinan or your local dealer.

2) You install "catless" DP's (primary cats are absent). You WILL need to have 02 sims in place to keep the car from throwing emissions codes. Your warranty can become void by Dinan or your local dealer upon discovery of them installed. REMOVE THEM BEFORE ANY DEALER TRIPS, PERIOD. I would be more on edge with the car going to the dealer with this setup than the above. IF you choose not to have the 02 sims in place then you WILL ALWAYS have issues in dealing with anything/anyone from the dealer to Dinan to your state's emissions station.

Now then, I also have the Dinan flash amongst many other mods in place AND will soon have catted DP's installed. If I ever am afflicted with a problem with the car that would cause the dealer (or Dinan) to investigate; you can bet your ass there will be nothing indicating the DP's were ever installed on my car ......... removed beforehand.

As a side note; I have never uninstalled/removed ANY mods from my car in preparation for a trip to the dealer. The car has endured diagnostic checks several times throughout this past year and I have NEVER received any warnings or static for it. Then again, if catastrophic failure rears it's head I will remove any performance mods I now have installed just to CMA.

And for anyone thinking I'm deceiving the dealer ........... they already know the car and everything that is currently installed. If the mods aren't installed on the car when they have posession of it they can't blame the problems on the mods.

[ToadHollow]

Originally Posted by stimpy

Hey Toad,

Wouldn't you worry that your account has been flagged with "This dude is modded out" and if a big warranty fix comes up - they will bust it on you regardless if the mods are present or not?

Remember, they can give you the big F-U for whatever reason they want and then it's on your shoulders to take them to court (lawyer fee's, court fee's, etc).

This is going to be long so ........... get comfie.

First, with regard to a dealer "flagging" a car for modifications etc.; I asked two separate dealerships about this "practice" and both gave the same answers. When a vehicle comes in for anything other than say an oil change; the only thing(s) that will be noted on the car will be if a non-OEM part has been modified and is causing (or partially causing) the issue at hand. The cause will be noted on the workorder by the tech assigned to the car. These notes are now a part of the permanent history of the car. 20 years from now when someone looks up the maintenance history of the car; the fact that an aftermarket exhaust was causing a "creaking" noise from underneath the car will be apparent. That is the extent of the "flagging" deal. It's all about vehicle history.

Vehicle history is dependant upon whether the tech bothered to notate the cause or not. If it's a discreet problem not requiring any chargeable labor then chances are the fix will be mentioned to you and the workorder will show the customer complaint/concern and nothing more ........... a GREAT reason to get to know the tech working on your car and to see to it he/she is the only tech EVER assigned to the car.

If I worried about everything you mentioned and allowed myself to become paranoid, then I never would have purchased a car that has a warranty. To be very honest, I specifically checked/spoke with both of my local dealer's SM, lead tech and Dinan tech with regard to modifications I wanted to make to the car.

Everyone involved knew/knows what I had in mind and gave me recommendations regarding the tune (Dinan was actually frowned upon), suspension, exhaust and intake changes. With the latest upgrades being the future FMIC as well as the DPs; I was assured there would be no conflict with the FMIC but, that it would be best if any issues did arise that the DPs be removed prior to the car being brought in for service.

Each of the dealers that I frequent have both given blessings with most of the mods in place and, they have also warned against the DPs (as Dinan also warned me about future servicing with them in place). Although the DPs are "catted"; their presence would cause unwanted attention.

BMWNA will become involved with the repairs/diagnostics when there is an obvious problem that may warrant voiding the warranty OR if the dealer has concerns of whether or not the cost of repair will be reimbursed to them by BMWNA. The dealer wants to be assured that if they repair a vehicle for warranty repairs that they will be reimbursed for their costs by BMWNA. This is their biggest concern with regard to warranty service of a customer's vehicle.

If I bring my car in ......... the car is running poorly and throwing codes ......... engine performance mods are STILL in place on the car ........... diagnostics shows (in their eyes) a problem that could be directly related to a mod in place ......... my dealer clears the codes and then performs repairs ......... there is an excellent chance they WILL NOT be reimbursed for their costs by BMWNA. As soon as diagnostics are run on the car; BMWNA knows and sees all thanks to the data uplink.

I realize there is always the chance of someone (dealer/tech/SM) side-stepping to cover their asses however, when I as an owner am able to go to my local dealer for this and that ..........."a noise coming from there or a rattle from underneath" ......... only to find out the noises are all due to modifications made on the car AND then to know that all of these issues were taken care of under warranty .......... I feel pretty good about the dealer being straight-up with me.

There is always a risk involved and I accepted that when I began modding the car. The biggest dilemma I face now is the fact that I will be relocating soon and am unsure as to the reception I will receive from my "soon to be" dealer.

[ToadHollow]

Originally Posted by stimpy

Hey Toad,

Wouldn't you worry that your account has been flagged with "This dude is modded out" and if a big warranty fix comes up - they will bust it on you regardless if the mods are present or not?

Remember, they can give you the big F-U for whatever reason they want and then it's on your shoulders to take them to court (lawyer fee's, court fee's, etc).

........... I have to add one more thing ..... (laughing at myself)

even if my account were "flagged" as having all of these mods, the only proof they would have would be in reference to the last time they had the car in the shop. If 6 months have gone by since that time then they have no chance in proving that these modifications were in place when THIS issue arose. I would simply say PROVE IT.

[coolguy]

Originally Posted by ToadHollow

After a bit more than 8 months of usage/ 2 oil changes ....... there was enough to fill a shot glass. I was pleased.

Thanks! Are there choices other than Riss?

[ToadHollow]

Originally Posted by coolguy

Thanks! Are there choices other than Riss?

I'm sure there probably are however, RR is a pretty good vendor within these forums with a great reputation as well. I go where the kudos go .....

Just did a quick Google and RR is about the only company making them for the e92/N54 fitment that I could find. Lots of manufacturers for the Ms and older bimmers though .......

[335iheLLraiseR]

Originally Posted by coolguy

Thanks! Are there choices other than Riss?

you could theoritically get a catch can and install at any reputable shop. A local here paid i believe 50-70 bucks on one. however Riss is a vendor on this board and they make it specifically for our cars. I like to support our vendors.

i recently had to buy some GP thunders, somehwere i got quoted less than electronicwoot, but since he is a vendor here, ill pay the extra couple of bucks.