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Old 01-18-2013, 11:08 AM   #21
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max psi kit throws 0 codes, has no CEL's and does pass inspection as previously stated by max psi. It's the only turbo kit available that is emissions proof for the e46
Exactly. And if the cats were to be removed, all I would need to do is follow teh DIY guide on these forums for some programable O2 sensors, and program them for the values as shown, and I should be fine.
Or have a shop do it, but I don't plan on removing cats.
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Old 01-18-2013, 03:33 PM   #22
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Old 01-18-2013, 05:46 PM   #23
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Exactly. And if the cats were to be removed, all I would need to do is follow teh DIY guide on these forums for some programable O2 sensors, and program them for the values as shown, and I should be fine.
Or have a shop do it, but I don't plan on removing cats.
Turbo + cats = melted mess!
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Old 01-18-2013, 05:48 PM   #24
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Turbo + cats = melted mess!
BMW 135i.. 335i.. Those are turbo cars with cats.
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Old 01-18-2013, 08:43 PM   #25
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Turbo + cats = melted mess!
There are tons of properly tuned turbo cars running cats.
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Old 01-18-2013, 11:00 PM   #26
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All I can tell you is that either go for the Max PSI ksit, or you might have to drop a bit more money into the emission testing. If you know what I mean.
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Old 01-18-2013, 11:05 PM   #27
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All I can tell you is that either go for the Max PSI ksit, or you might have to drop a bit more money into the emission testing. If you know what I mean.
I'll spring for the kit. lol
I can't afford to buy another M3, same exact year, model, type, color, etc.

In NH if you've got the SAME EXACT car, use the registration from the clean car, have them test the clean car... but write the sticker for the boosted one, you'll pass. (illegally).
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Old 01-19-2013, 01:37 AM   #28
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There are tons of properly tuned turbo cars running cats.
Lol ok. There are factory designed turbo cars running cats yes. Lets see how these cars cats hold up, because every other F/I company on this forum products has roasted cats. These properly tuned cars are not making the same power either.
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Old 01-19-2013, 01:39 AM   #29
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BMW 135i.. 335i.. Those are turbo cars with cats.
Designed with lower boost pressure and smaller turbos.
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Old 01-19-2013, 03:06 AM   #30
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I personally wouldn't run a big turbo car with cats but I thought I recall Jim Pac's car (Og HPF #001!) having cats in it.
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Old 01-19-2013, 04:02 AM   #31
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Where does the HPF downpipe meet up with the factory exhaust? Is it to the section after the headers or rear section? European cars have the stock cats in the section right after the headers..
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Old 01-19-2013, 04:58 AM   #32
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Where does the HPF downpipe meet up with the factory exhaust? Is it to the section after the headers or rear section? European cars have the stock cats in the section right after the headers..
HPF setup replaces the factory section 1 with a straight 3inch pipe along with the wastage dump tube and then splits into a duel pipe connecting to the factory section 2 which in turn is connected to the stock muffler configuration.
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Old 01-19-2013, 05:08 AM   #33
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Here's a photo I found on the forum that shows the HPF exhaust setup. If u look at the connection from section 1 to 2 the Y could be cut out and put a cat in that section. There are several slim stainless cats that could be squeezed in to the stock section 2. The setup pictured has an aftermarket single pipe for section 2 so a 3 inch cat could be dropped in. The only issues is that far back the cats may be rendered ineffective as the heat may not be as high that far back to burn efficiently. I know that Proefi has a module that mimics sensors so u don't throw any lights. It may only work with their system not sure. Click image for larger version

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Old 01-19-2013, 07:44 AM   #34
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I personally wouldn't run a big turbo car with cats but I thought I recall Jim Pac's car (Og HPF #001!) having cats in it.
I believe you are correct good sir...and Jim's car ran without issue!
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Old 01-19-2013, 08:55 AM   #35
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Well, I'll msot likely run without cats when I get the kit. Easy way to pass in the programmable O2 sensor.
http://forum.e46fanatics.com/showthr...aders+no+light

I do love the smell of a car running catless. That's one sexy smell.
But, I have plenty of time to decide, thanks for the concern though, I will in fact, keep in the mind melted mess. Honestly kinda scares me. lol
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Old 01-19-2013, 12:16 PM   #36
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Well, I'll msot likely run without cats when I get the kit. Easy way to pass in the programmable O2 sensor.
http://forum.e46fanatics.com/showthr...aders+no+light

I do love the smell of a car running catless. That's one sexy smell.
But, I have plenty of time to decide, thanks for the concern though, I will in fact, keep in the mind melted mess. Honestly kinda scares me. lol
That might work for headers but not for most of the turbos. For example the HPF kit as mentioned before because it throws other codes which will fail u such as over retarded cam, crank trigger, no MAF etc...
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Old 01-19-2013, 12:18 PM   #37
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That might work for headers but not for most of the turbos. For example the HPF kit as mentioned before because it throws other codes which will fail u such as over retarded cam, crank trigger, no MAF etc...
I wasn't talking about the other codes, I was talking about the PSI kit, and going catless. Which that fix would allow me to pass inspection. As their kit will pass all tests, if it's catted. So fi I want to remove the cats, I get the LC-1.. program it, and I'll pass.
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Old 01-19-2013, 12:19 PM   #38
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I believe you are correct good sir...and Jim's car ran without issue!
From what I understand he needed to pass a visual tech inspection for a certain class he ran in. I know some emissions tests include visual inspections.
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Old 01-19-2013, 12:22 PM   #39
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I wasn't talking about the other codes, I was talking about the PSI kit, and going catless. Which that fix would allow me to pass inspection. As their kit will pass all tests, if it's catted. So fi I want to remove the cats, I get the LC-1.. program it, and I'll pass.
This sounds like that will work... Although the Proefi apparently can run without any codes with there sensor module I'm not sure how well it works though.
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Old 01-19-2013, 01:12 PM   #40
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Well, I decided to pass on the HPF M3 I wanted.. I'm not just looking for a clean to one play with or a bit, THEN bring the car to Max.PSI and have them install a nice kit.
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