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Thread: '04 AW/Blk coupe project (engine replacement first)

  1. #41
    Join Date
    Nov 2017
    Location
    Irvine, CA
    Posts
    100
    I took the car out for a drive tonight. I forgot how smooth ZHPs are. And, I forgot how much better the fuel economy is compared to my e46m3. I was trying to run down the fuel so I can get a fresh tank, but after about 120 miles (90% highway) I think I only used about 1/3 tank. I also put some Lucas ethanol treatment and Techron additive in the tank before I left for the drive.From where I started the fuel gauge showed a hair under half, I decided to just fill up. So 1/2 tank old stuff and 1/2 tank new stuff in it now.

    First impressions:
    - Smooth. The engine was smooth through the rev range (I didn't go above 5k during this drive, I'm chicken -jk), the transmission shifting through the gears was smooth too.
    - Quiet. It's noticeably more quiet than my m3 (only mod is euro headers and euro sec 1). This is nice for DD and long highway cruises. Still has the characteristic inline-6 bass-y tone, much more than the old 330i I had. I like it, not intrusive, not silent.
    - Fuel economy. Already noted above, but man, I'm impressed.
    - Dampers need to be changed. At 99,xxx, they're due. But on smooth pavement it's smooth and comfortable. I'll have a set of Koni yellows in a few months. My wallet needs a break.
    - The Michelin PS4S are awesome tires. Good feedback and quiet. The sidewalls are softer (just like PSS) than some others like the RE-11's, but they're really comfortable.
    - Steering ratio of the ZHP rack is noticeably quicker than my non ZCP m3. This is something I'll have to consider for the m3.
    - I really like the dynamic headlights. They're great for highway on-ramps!
    - The car sits lower than my m3 (stock springs) by about 1/2" - 2/3". Makes me consider getting some Dinan springs for the m3 (they only drop about 1/2").
    - The car could benefit from some larger sway bars.
    - Adding a strut bar could help sharpen feel slightly.
    - I might have to retrofit heated seats. I use them each the time I drive the m3, helps with my lower back.


    Overall, I'm quite happy with the project and the outcome

    A funny thing happened on the drive. While on the highway I noticed something fly up and over my hood. I didn't know what it was. It looked like a piece of paper or something, but I didn't notice anything in the roadway or fly off of the cars in front of me. I figured oh well, glad it didn't hit my windshield or the paint. When I get home, I figured out what it was...



    Damn BMW, of all things to fall apart. lol. I can't imagine a Porsche crest failing like this.

    After I wiped down the interior I noticed how clean the interior really was. The ashtray and sunglass console has minimal marks on it.


  2. #42
    Join Date
    Nov 2016
    Location
    Charlotte, NC
    Posts
    2,373
    Awesome update and damn that's the nicest OE ash tray I've ever seen on an E46!

    To your notes:

    Dampers - if you want to really maintain/enhance that smoothness, then go with the Koni FSD/Special Active over the Yellows. It's amazing how much they soak up bumps and are no slouch in the handling department. Can't beat them for a DD.
    https://www.tirerack.com/suspension/tests/koni_fsd.jsp

    Sway bars - a simple OEM upgrade is the Z4M front bar (27mm compared to the 23.5mm ZHP bar). It also has the same angle on the mounting points, whereas the M3 bar (26mm coupe, 27mm vert) fits, but has straight tabs that put the non-m end links to their max twist, sometimes causing bind. I have the Z4M front and a non-m vert/xi rear bar (20.5mm vs 18.5mm ZHP) and it works out well. I think I have a few sets of adjustable sways in the garage too that I haven't tried...

    PS4S - hell yes, amazing tire. I've found that they're really sensitive to pressures - 32psi cold is perfect for me. Right now I have mine at 33psi cold and they get up to 37psi while driving, which is enough to make them slightly harsh and reduce the confident grip feeling.

    Adaptive headlights - my favorite aspect of our coupie bois. You'll be giggling the first time you cruise down some winding rural roads at night!

    Kamikaze roundel - lol

  3. #43
    Join Date
    Feb 2013
    Location
    Austin TX
    Posts
    5,261
    Good job, Will. Glad to hear the coupe is back to business. I may need to try those Michelins some day.

    Haha ... that silly roundel.
    2005 IR / black / 6MT
    146,000 miles

  4. #44
    Join Date
    Jan 1970
    Location
    Southern California
    Posts
    16,632
    +1

    Sent from my SM-G955U using Tapatalk
    Randeaux/Rando/John/jr - '06 Cic ZHP; Southern California
    "ZHP or not, I still like you"


    ZHP Performance Package, Cold Weather Package, Leather, Jet Black/Black/BlackCube, NAV
    ESS Stage 1 Twin Screw Supercharger, Sprint Booster, BMW Perf Intake, Magnaflow Exhaust, Dinan TB & STEP S/W, Ground Control Coilovers, UCC Sway Bars, Apex EC-7 18x8.5 ET38
    Dynavin D99+, Hardwire V1 (w/V1 Connection), BSW Stage 1 Speakers, Kicker Amp/Subwoofer
    BMW Performance Strut Brace, Orion V2 Angel Eyes, No-holes License Plate, SMG Paddle Shift Mod, Besian VANOS, Gold DISA, Fan Delete, M3 Side Mirrors
    Note: Actual car no longer resembles signature picture

  5. #45
    Join Date
    Nov 2017
    Location
    Irvine, CA
    Posts
    100
    Quote Originally Posted by ZHPizza View Post
    Awesome update and damn that's the nicest OE ash tray I've ever seen on an E46!

    To your notes:

    Dampers - if you want to really maintain/enhance that smoothness, then go with the Koni FSD/Special Active over the Yellows. It's amazing how much they soak up bumps and are no slouch in the handling department. Can't beat them for a DD.
    https://www.tirerack.com/suspension/tests/koni_fsd.jsp
    FSD/Special Active are a real consideration, seems like people who have them really like them. I'll have to read some more reviews, especially after owners have had them a few years and after some miles. I have the Yellows on my m3 and installed a set on the 330i that my brother has now. I remember they were buttery on the 330, nice and taut but nicely damped. One option was to just take the Yellows from the 330i since I did this project to replace the '01 330i that my brother has - he could use a nicer e46, and a ZHP.

    Quote Originally Posted by ZHPizza View Post
    Sway bars - a simple OEM upgrade is the Z4M front bar (27mm compared to the 23.5mm ZHP bar). It also has the same angle on the mounting points, whereas the M3 bar (26mm coupe, 27mm vert) fits, but has straight tabs that put the non-m end links to their max twist, sometimes causing bind. I have the Z4M front and a non-m vert/xi rear bar (20.5mm vs 18.5mm ZHP) and it works out well. I think I have a few sets of adjustable sways in the garage too that I haven't tried...
    Seems like the Z4M/CiC (Xi) bar is the way to go, I'll definitely look for a set. But initial search appears the Z4M fronts are a difficult find (for a reasonable price).

    Quote Originally Posted by ZHPizza View Post
    PS4S - hell yes, amazing tire. I've found that they're really sensitive to pressures - 32psi cold is perfect for me. Right now I have mine at 33psi cold and they get up to 37psi while driving, which is enough to make them slightly harsh and reduce the confident grip feeling.
    I love these PS4S! I was in love with the PSS and am already in love with these. I'll have to play around with the pressures, but currently running 32/38. Seems like I might try 33 front and drop the rears down to 35 or 36.

    Quote Originally Posted by ZHPizza View Post
    Adaptive headlights - my favorite aspect of our coupie bois. You'll be giggling the first time you cruise down some winding rural roads at night!
    I just took the car out for a drive at night to try the adaptive headlights lol! Took it to some windy roads... man, I really like them now. I wonder if anyone retrofit them on the pre-facelift cars (thinking for the m3).

    Quote Originally Posted by ZHPizza View Post
    Kamikaze roundel - lol
    Roundels seems to be flying off of my cars lately. When I rear-ended someone in my m3 recently, of all things the left front wheel emblem flew off of the plastic retainer. Similar failure in the adhesive. lol.


    Quote Originally Posted by fredo View Post
    Good job, Will. Glad to hear the coupe is back to business. I may need to try those Michelins some day.

    Haha ... that silly roundel.
    Thanks, Fredo. Grab a set when Costco has the $70 rebate and the 1-penny installation. As long as you're not looking for a stiff sidewall (they're not sloppy by any means, just more compliant imo) then they're hard to beat. I think they have really good wet traction too, if weather is a factor for you.

    Quote Originally Posted by johnrando View Post
    +1

    Sent from my SM-G955U using Tapatalk

    Thanks, John.

    People on this forum helped give me that extra motivation to pick up a wrench when I felt like just sitting on my ass with a beer - the beer tasted so much better after some wrenching! The various updates - however big or small - to members' project threads are really cool to me, and quite motivating. Good to see people keeping these (and other) cars on the road. This forum has a different feel to it, more civil and collegial imo.

  6. #46
    Join Date
    Sep 2018
    Location
    Austin, Tx
    Posts
    69
    Great work and documentation!
    '09 HP2S, '12GSA, '00 332iT (S54 Swapped), '00 323iT, '03 325iT, '04 ZHP IR/6MT Sedan

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