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    E46 M3 S54 headers

    How do they perform. Any data on this?


    Thanks
    Click here to enlargeClick here to enlarge

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    1 out of 1 members liked this post. Yes Reputation No
    According to the info. I've seen for these headers, the primary tubes are listed at 1 7/8", that is (IMO) way too large for an NA E46...possibly even too large for a S/C application as well. Based on the recent disappointing dyno results that we've conducted on a couple of Epic header (which have large primaries as well) equipped NA cars...I would steer clear from either of these headers for an NA application.

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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by stosh1 Click here to enlarge
    According to the info. I've seen for these headers, the primary tubes are listed at 1 7/8", that is (IMO) way too large for an NA E46...possibly even too large for a S/C application as well. Based on the recent disappointing dyno results that we've conducted on a couple of Epic header (which have large primaries as well) equipped NA cars...I would steer clear from either of these headers for an NA application.
    We have not done any testing with these headers on an NA car because they were not designed for it. We have sold a few sets to guys that were NA but I don't have any data from them. I do agree that 1 7/8" is too big for a fairly stock NA car.

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    Thanks for the info guys. stosh1 which headers have you tested?
    Click here to enlargeClick here to enlarge

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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by GG///M3 Click here to enlarge
    Thanks for the info guys. stosh1 which headers have you tested?
    Pick one...we've dyno'd pretty much every header currently on the market.

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    Would these RMS headers be better than lets say the SS V1?

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    Click here to enlarge Originally Posted by stosh1 Click here to enlarge
    Pick one...we've dyno'd pretty much every header currently on the market.
    I'll list a few.

    Bimmerworld Pacesetter headers

    Status Gruppe Headers

    AP headers

    Fabspeed Headers

    SS headers.

    AA headers.

    I would love to see a thread with all this info. Also whats ur take on 200 cell cats vs 400 cell cats. I'm concerned about nasty fumes without cats, so for cats are a must.

    Thanks.

    Sticky maybe you can name this thread the Headers thread for S54's?
    Click here to enlargeClick here to enlarge

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    Click here to enlarge Originally Posted by curiouz_g Click here to enlarge
    Would these RMS headers be better than lets say the SS V1?
    Yeah, if we had 400cu.in+ engines!Click here to enlarge


    Click here to enlarge Originally Posted by GG///M3 Click here to enlarge
    I'll list a few.

    Bimmerworld Pacesetter headers

    Status Gruppe Headers

    AP headers

    Fabspeed Headers

    SS headers.

    AA headers.

    I would love to see a thread with all this info. Also whats ur take on 200 cell cats vs 400 cell cats. I'm concerned about nasty fumes without cats, so for cats are a must.

    Thanks.

    Sticky maybe you can name this thread the Headers thread for S54's?
    All of the headers that you listed are functional identical enough (dare I say that some on that list are even produced in the same factory), that all will be within 1-2HP of each other. I believe that the AP headers are still manufactured from 316SS (more heat/corrosion resistant), while the others IIRC are 304SS...for our purposes the 304SS should be sufficient for just about every application. The only header that makes slightly more power are the SS V1's.

    200 cell CAT's will flow slightly better than 400 cell CAT's (we're talking maybe 3-5HP), and will eliminate practically any "nasty" fumes. I've run 100 cell CAT's (which flow even better), and they still eliminate that 'gas' smell. Hell, even going catless (if you're tuned correctly), there won't be any noticeable fumes...but that opens up a whole 'nother potential legal can of worms.Click here to enlarge

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    Click here to enlarge Originally Posted by stosh1 Click here to enlarge
    Yeah, if we had 400cu.in+ engines!Click here to enlarge




    All of the headers that you listed are functional identical enough (dare I say that some on that list are even produced in the same factory), that all will be within 1-2HP of each other. I believe that the AP headers are still manufactured from 316SS (more heat/corrosion resistant), while the others IIRC are 304SS...for our purposes the 304SS should be sufficient for just about every application. The only header that makes slightly more power are the SS V1's.

    200 cell CAT's will flow slightly better than 400 cell CAT's (we're talking maybe 3-5HP), and will eliminate practically any "nasty" fumes. I've run 100 cell CAT's (which flow even better), and they still eliminate that 'gas' smell. Hell, even going catless (if you're tuned correctly), there won't be any noticeable fumes...but that opens up a whole 'nother potential legal can of worms.Click here to enlarge

    I have the kid in the car at times, so I want the least amount of fumes. What did the Euro specs cars run in terms of cats cell rating?
    Click here to enlargeClick here to enlarge

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    Click here to enlarge Originally Posted by GG///M3 Click here to enlarge
    I have the kid in the car at times, so I want the least amount of fumes. What did the Euro specs cars run in terms of cats cell rating?
    There's been alot of controversy over the CPSI rating of Euro CAT's, but I believe the general consensus is that they are 200 cell.

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    Click here to enlarge Originally Posted by stosh1 Click here to enlarge
    Yeah, if we had 400cu.in+ engines!Click here to enlarge
    How about 9lbs of boost Click here to enlarge Just trying to figure out if its a worthwhile swap from M3an one headers to RMS ones. If its anything less than 10whp, I probably wont do it since I'm lazy hah

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    Click here to enlarge Originally Posted by stosh1 Click here to enlarge
    There's been alot of controversy over the CPSI rating of Euro CAT's, but I believe the general consensus is that they are 200 cell.
    Interesting. I may have found a set of AP headers new locally for a great deal, so I may jump on them very soon.

    What kind of results have you seen with them?
    Click here to enlargeClick here to enlarge

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    Click here to enlarge Originally Posted by GG///M3 Click here to enlarge
    Sticky maybe you can name this thread the Headers thread for S54's?
    Sure.

    There are also Euro headers for sale in the classifieds if you want a cheap solution that works well.

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
    : http://www.boostaddict.com/showthrea...r-kit-for-sale

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    Good thread I'm looking for a set of headers eventually...

    Basically all of the headers out there make the same power. The only ones that I've seen that make a little more are the SS stepped headers.

    I believe the SS stepped v1 headers you must use their section 1 as well... I'm pretty sure they revised that though with the SS V2 stepped headers and you are able to use whatever section 1 you want.
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    Click here to enlarge Originally Posted by GG///M3 Click here to enlarge
    Interesting. I may have found a set of AP headers new locally for a great deal, so I may jump on them very soon.

    What kind of results have you seen with them?
    Get the defoulers out of the exhaust flow and you're golden with that set.

    From someone who went from JVT-R's to SS v1's - the V1 headers are indeed fantastic. They change the exhaust note quite a bit over traditional euro headers but the power increase is worth it.

    Norm noticed this as well going from OE Euro to SS v1's.

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    Click here to enlarge Originally Posted by MisterEm Click here to enlarge
    Get the defoulers out of the exhaust flow and you're golden with that set.

    From someone who went from JVT-R's to SS v1's - the V1 headers are indeed fantastic. They change the exhaust note quite a bit over traditional euro headers but the power increase is worth it.

    Norm noticed this as well going from OE Euro to SS v1's.
    What are defoulers?
    Click here to enlargeClick here to enlarge

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    Click here to enlarge Originally Posted by GG///M3 Click here to enlarge
    What are defoulers?
    Turn the header upside down and look into the collector.

    You will see the defoulers sticking into the exhaust stream where the 2nd oxygen sensor bung connects. AP and Fabspeed included these into the design.

    They impede flow and are a lame attempt at minimizing fault codes after header installs for those running the old US software.

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    Click here to enlarge Originally Posted by MisterEm Click here to enlarge
    Turn the header upside down and look into the collector.

    You will see the defoulers sticking into the exhaust stream where the 2nd oxygen sensor bung connects. AP and Fabspeed included these into the design.

    They impede flow and are a lame attempt at minimizing fault codes after header installs for those running the old US software.
    Interesting. Do the Status Gruppe headers have the same issue? The more I read the more I see a lot of people love the SSv1 headers.
    Click here to enlargeClick here to enlarge

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    Click here to enlarge Originally Posted by GG///M3 Click here to enlarge
    Interesting. Do the Status Gruppe headers have the same issue? The more I read the more I see a lot of people love the SSv1 headers.
    Not sure if they do, but you can have them removed for a small fee. Most folks don't care and bolt them on up.

    Send a set of V1's over for a White Lightning treatment prior to install and you will never need to touch your headers again.

    Take it from the guy who's done 3 header installs on jackstands. There is a reason a shop charges 7+ hours for the job.

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    Here is some better data with JVT-R headers, and 200 cell cats. And another run with SS v1 headers with 200 cell cats. Same tune ran at 5,800 ft elevation.

    Car was falling on its face at 7,000 rpm due to a failing fuel pump - same tank of 91 (e10) gas for both runs.

    Click here to enlarge

    Only negative with the V1's is the exhaust note, IMO. I preferred the sound from the smaller primary headers.

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    Click here to enlarge Originally Posted by MisterEm Click here to enlarge
    Here is some better data with JVT-R headers, and 200 cell cats. And another run with SS v1 headers with 200 cell cats. Same tune ran at 5,800 ft elevation.

    Car was falling on its face at 7,000 rpm due to a failing fuel pump - same tank of 91 (e10) gas for both runs.

    http://www.bimmerboost.com/images/im.../pM6vlw9-1.jpg

    Only negative with the V1's is the exhaust note, IMO. I preferred the sound from the smaller primary headers.
    Very good info. I just don't see sending nearly 2500 bucks for the SSv1's. I found a set of AP's locally new for very very cheap compared to SS. I also found a set of cams. Both can be had for less then just the SSv1's. You are correct about most headers performing about the same, but those darn SSv1's flow very very well. It seems like a set of power pulleys, and intake elbow would easily over come the power advantage over the SS headers while still being cheaper. The thing thats killing me is that there is a group buy on the SSV1's for 1869 shipped. Which is what 400 bucks off or something like that? Have you had the car tuned yet?
    Click here to enlargeClick here to enlarge

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    Can't blame you on the price. I was spoiled with mine.

    I got lucky and picked up these V1's used on E46fanatics with the S-pipe for $1700. Had the headers shipped to Swaintech for the White Lightning treatment and the S-Pipe to Jack at Custom Performance and to add a pair of HJS 200c cats. Coating is still very solid after two installs and several drops to the garage floor.

    The E36 style exhaust studs used for the JVT-R's are too long for the fat primaries of the V1's on one of the studs for cylinder 6. Figured that out after having the whole job just about buttoned up... that is the only reason I had to take them off.

    Click here to enlarge

    Took a picture during the overflow tank replacement here is what it looks like now after some abuse, an OCC fluid spill (oops), and a couple install/reinstallations.
    Click here to enlarge

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    Very nice. I like the coating. Does the stock heat shield not cover the headers anymore on the SSv1's?
    Click here to enlargeClick here to enlarge

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    Plenty of room to install the shield if you want. I chose to leave it off since the V1's are now coated.

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    Click here to enlarge Originally Posted by MisterEm Click here to enlarge
    Plenty of room to install the shield if you want. I chose to leave it off since the V1's are now coated.
    Well it looks like I missed out on a deal of euro headers, but it looks like I'll be picking up a set of AP headers. I almost want to buy the V1's but I can't see myself paying that much for headers then a set of cats when thats nearly the price of a used sc kit.
    Click here to enlargeClick here to enlarge

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