Hello there and welcome to the BMW Car Club of America.

If you are a BMW CCA member, please log in and introduce yourself in our Member Introductions section.

Next Step for additional performance

Discussion in 'E46 M3 (2001-2006)' started by EEM3, Apr 29, 2008.

    EEM3 guest

    Post Count: 7
    Likes Received:0
    I have 2001 M3 with the following modifications:
    Borla Cat Back exhaust, Delsa carbon fiber intake and an Autobahn Superchip.
    The car is running pretty good, but I want to take it a step further. Any suggestion keeping the car naturally aspirated ??

    Dr Obnxs guest

    Post Count: 122
    Likes Received:1
    Typically

    for N/A cars, most improvements are pretty marginal unless you port the head. I don't know if that results in good gains for your car or not, but short of that, all you can do is

    On the intake side....
    Filter/intake assembly.
    Throttle Body (bodies?)
    Ported intake manifold

    On the exhaust side
    Cat back system
    Exhaust header.
    High flow cats.

    On the head itself
    Cams
    Larger valves
    Porting/polishing

    ECU tuning

    After that, is time for a supercharger or turbo kit.

    Matt

    Musikpro guest

    Post Count: 38
    Likes Received:0
    Out of curiosity...

    What is an autobahn superchip (I know what the autobahn is, and I assume the superchip is some sort of software upgrade). But what does it do?

    Dr Obnxs guest

    Post Count: 122
    Likes Received:1
    Chips

    change timing, fuel maps, shift points (for automatics) and the like to make the engine bias the engine management computer a bit more towards performance.

    Matt

    ps, on my list I forgot to mention boring the block to increase displacement!

    EEM3 guest

    Post Count: 7
    Likes Received:0
    It is basically what you stated, a software tunning upgrade. It remaps ignition timing and fuelling. I was very happy when it was installed in my car a couple of years ago, the change in performance was noticeable.

    This is their website, ( a few years ago in their brochure they mentioned autobahn superchip, or maybe that was the way they advertise here in the caribbean).

    http://www.superchips.co.uk/superchips.php

    EEM3 guest

    Post Count: 7
    Likes Received:0
    I have in mind, to change to a full header with a borla x-pipe and free flow cats,. But I am not sure if it will be too much exhaust and the motor tend to empty.

    Dr Obnxs guest

    Post Count: 122
    Likes Received:1
    Work with a good shop that knows what they are doing...

    too big an exhaust will kill scavaging and you will loose power. Work with someone who has been down this path before with your engine, that way he (or she) will be able to let you know what to expect and you won't waste money and be dissapointed.

    But do a bit of calculations on this. All the bolt ons add up fast, and a very conservative blower set up can seem like it costs more (cause you pay at once) when it may be the cheaper way to go, all things considered.

    Matt

    mdheller guest

    Post Count: 32
    Likes Received:0
    Limited slip...

    You could think about doing a limited slip differential. I have mine from dinan, I can't say how much power I get from it because I traded in my stock e46 m3 for a stage 3 dinan car with the lsd already done but it should increase torque and let you get over 60mph before you shift into third.

    EEM3 guest

    Post Count: 7
    Likes Received:0
    Thanks...
    I am trying to get quotes here for a 4:10 diff, but they are around $2,500. So I am giving a lot of thought to go straight to a supercharger kit and stop cutting corners.

    My car is running great, actualy I have'nt lost a race to any normally aspirated car, (including Carreras, Mustangs and 350Z) and even some 335i. But a few extra horses would sure be nice...

    mdheller guest

    Post Count: 32
    Likes Received:0
    "My car is running great, actualy I have'nt lost a race to any normally aspirated car, (including Carreras, Mustangs and 350Z) and even some 335i. But a few extra horses would sure be nice..."

    You probably should blow most of those cars away stock, like the mustangs and the 350Z. The carreras are a diff story depending on what gear you start the race in. In my stock
    E46 I ran into a Carrera on the interstate and he whooped on me from 80+. As far as the 335i is concerned, if they put a chip in that you will almost definitely lose the race. I'm running a Dinan S3-R and I ran into a guy running 14.5 lbs of boost in a 335i who was a tiny bit faster than me in a straight line. The stock Dinan Vortec supercharger only runs 5.5 psi though so I know I could always crank up the boost if I had an ego problem and I really just had to win. Just to give you an idea, I've got the dinan S3-r which consists of S3-R supercharger, intercooler, chip, throtle bodies, Limited slip, full dinan exhaust, and some other stuff like brakes and suspension and they are still faster than I am.

    If you decide to do the blower, I'd love to hear about which set-up you end up with. I bought this car straight from the dealship as is and got one hell of a deal on it, but if I had to do it all over again, I might think about getting a supercharger/intercooler kit fom a different company for a whole lot cheaper than the 17k price tag that the dinan kits come with...

    M3Driver guest

    Post Count: 619
    Likes Received:3
    Gears; best bang for the buck out there. Check out the 3.91 gears at Dinan.

    leonelm3 guest

    Post Count: 4
    Likes Received:0
    my 2 cents

    I agree with mdheller,

    That DINAN kit is awesome but HPF are the KINGS on E46 M3 power right now with there turbo kit.

    just do your math.
    I could have bought the HPF TURBO kit flat out as aposed to modding the hell out of my E46 M3 the way I did.
    -CARBONIO / DELSA CF CAI
    - POWER PULLEY SET
    - Xendo BBK FRONT & REAR
    - UUC STG2 LWFW W/ MULTI-PUCK CERAMIC CLUTCH
    - UUC SSK & DSSR
    - KONI SPORT ADJ SHOCKS
    - TEIN S LOWERING SPRINGS
    - DINAN THROTTLE BODIES
    - DINAN FREE FLOWING EXHAUST
    - EIBACH SWAY BAR KIT
    - TMS SUB FREAM REINFORCEMENT KIT
    - POLYURETHANE COMPLETE E46 M3 BUSHING KIT
    - POWER AGENCY FRONT TOWER BRACE
    - CF ENGINE COVER
    - BAV AUTO HP IGNITION WIRES
    - AND NOW AN AA GEN2 STG3 SC

    Not to mention all the cosmetic shtuff . the sound system does not count because i did not cut much corners
    but with the Time and Money Invested, I could have simply saved my money, sent the car to HPF and would have gotten a true unfucwitable BEAST
    • Member

    campygoob

    Post Count: 2
    Likes Received:0
    Best Upgrade!

    HPDE! High Performance Driver's Education. This will make you a better driver and you can take it to your next car. ~$400-$500 for a 2 day event.

    Fred

    Rascasse guest

    Post Count: 5
    Likes Received:0
    Veloce Performance does some good ECU work for the E46 and E92 M3

    Skip guest

    Post Count: 15
    Likes Received:0
    looking for consensus

    Can someone enlighten me and tell me who HPF are and if others agree they are "the kings on E46 M3 power"?

    Skip guest

    Post Count: 15
    Likes Received:0
    PS

    I'm also interested in what Dino Rascasse has recommended. Judging from his stable he's in a unique position to give advice on performance! Anymore info or advise on Veloce Performance?

    1996 328ti guest

    Post Count: 96
    Likes Received:2
    Old thread, but have you done any driving schools?
    I think that is the best mod anyone can do.

    Skip guest

    Post Count: 15
    Likes Received:0
    Thanks. I did see the original post you quote... but I'm looking for some consensus among owners precisely because we have at least three different opinions posted here. Also, I should have mentioned what my purpose for modifications would be.... my M3 is a ragtop so I can't track it. All I want is performance improvements for street use.

    I do like the simplicity of the three mods you mention, but wonder why you say the car is running "pretty good", which isn't a great review. My car already runs better than pretty good :D

    Skip guest

    Post Count: 15
    Likes Received:0
    PS

    I do want to go to the BMW driving school where I can use their cars and get some good training. I've been through advanced rider training for motorcycles but would enjoy and benefit from an auto driving school to be sure. Maybe in the spring if I can convince myself it's a good use of 5 large that could also go to mods or CSL wheels.
    • Member

    CRKrieger

    Post Count: 1,616
    Likes Received:20
    Why don't you go to OUR driving schools where you can use YOUR car and get some good training?

Share This Page