Headers with cats found!

Originally Posted by TxZHP04

At this point, why not just wire up an LC-1?

I guess it is because I would rather it be truly emissions legal.

Jim

The cats are installed, passed emissions test and now it is a little quieter than when it had no cats along with a lighter checking account . . . sigh.

Jim

Originally Posted by Jim Murphy

The cats are installed, passed emissions test and now it is a little quieter than when it had no cats along with a lighter checking account . . . sigh.

Jim

That really sucks man.

Your willingness to jump in is not lost on me, I appreciate the fact that you were willing to give these a try!

Originally Posted by zhp43867

That really sucks man.

Your willingness to jump in is not lost on me, I appreciate the fact that you were willing to give these a try!

The tuner is telling me that this particular ECU (late E46) is the most complicated one of the E46 models including the M3; thus, tuning is a challenge. This shop does a lot of FI work on BMW, MB and Porsche.

Jim

Yeah, for whatever reason, MS45.1 appears to be a particular pain to work with.

The tuner told me that this particular program is way bigger in size than any other one and has a multitude of controls that the others do not have.

Jim

http://www.schmiedmann.com/3_series/...ge19.htm#17923 cheaper and better , i made 215hp just with these an cheap intake and a tune,greets

Originally Posted by diederik

http://www.schmiedmann.com/3_series/...ge19.htm#17923 cheaper and better , i made 215hp just with these an cheap intake and a tune,greets

One of many available options. Those would not be strictly OBDII legal in the US nor would they be legal in racing classes requiring cats in the stock location. That was the whole point of the OP, headers which keep the cats in the stock location (for the US market).

Just burned out the new rear replacement cat. Going to straight pipes except when it is time for emissions test, run cats, pass emissions test and then back to straight pipes. Sheesh . . . . .

Something isn't right. Do you have current dynos showing AFR?

Buckhead Import Performance is who found the Magnaflows burned out and clogged up. They were replaced a couple of months ago. Later, one PDX at Road Atlanta (two 20 minute sessions with the motor idling after each with the hood up to cool down), is where I am now with a clogged up cat.
Buckhead has installed and maintains dozens of German FI cars of all levels of prep. They have found out that track time wears out cats at a much accelerated rate - one year life versus 5+ years.
Thus, their solution is to have two short sections - one set with the cat's and one set with either straight pipes or short (same length) mufflers for better sound control. Install the cat's for the annual emission testing and then replace them with the straight (muffler) pipe for the rest of the year. Dozens of their customers have done this with 100% success. Buckhead says that all my problems go back to clogged/burned-out cat's that they were trying to fix with software programming to no avail over all these months.

Originally Posted by TxZHP04

One of many available options. Those would not be strictly OBDII legal in the US nor would they be legal in racing classes requiring cats in the stock location. That was the whole point of the OP, headers which keep the cats in the stock location (for the US market).

Those Schmiedmann parts are not necessarily better. There is an austrian guy who runs these parts in his 323 (forced induction) -> cats burned out. Schmiedmann told him that these cats arent made for FI cars.

Originally Posted by silyb0y

Those Schmiedmann parts are not necessarily better. There is an austrian guy who runs these parts in his 323 (forced induction) -> cats burned out. Schmiedmann told him that these cats arent made for FI cars.

You're a little late to the party but that's interesting feedback none the less. I also never stated or implied anything about whether they were a better option with or without FI. Someone else brought them up and I was merely pointing out that they are not emissions legal in the US and that they didn't fit the topic of this thread.

Originally Posted by TxZHP04

You're a little late to the party but that's interesting feedback none the less. I also never stated or implied anything about whether they were a better option with or without FI. Someone else brought them up and I was merely pointing out that they are not emissions legal in the US and that they didn't fit the topic of this thread.

Sorry mate - quoted the wrong post. I meant to quote "diederik" who wrote:

"cheaper and better , i made 215hp just with these an cheap intake and a tune,greets "