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Thread: The life of Ryan's 2003 ZHP

  1. #181
    Join Date
    Nov 2014
    Location
    Portland, OR
    Posts
    9,283
    Nice work getting it in there and sorry about the misfire issue. Headers sound like a nightmare to me, but I do envy those who go that route.

  2. #182
    Join Date
    Jun 2012
    Location
    Socal
    Posts
    1,197
    nice. yeah I still have mines sitting in a shed. i'll get to it eventually. have to swaintech coat it first.

  3. #183
    Join Date
    May 2012
    Location
    Northern Michigan
    Posts
    491
    My misfire isn't fixed, but I've mitigated it by tuning the DME to NOT shut down cylinders when a misfire is detected. So now I only get a quick SES flash at about 6250 RPM when it does occasionally misfire and its very non intrusive. I really can't feel it happening, the only reason I know something happened is the quick flash of the SES light when it does.

    In other news, I installed an M3 front sway bar. Here's the M3 bar (26mm) compared to the stock ZHP front bar (23.5mm):



    Notice the ends of the bar have a slightly different angle to them. The M3 bar bolts in fine, but the end link is a little tweaked:





    I don't think it will be a problem, worse case they probably wear out faster, but I might install a set of adjustable end links from Turner anyway at some point.

    Turn-in is much improved, the car feels so nimble. And its flatter in the corners, obviously. But what surprised me is how much the car feels like it wants to "dig in" through corners now, its quite fun! I'm very much looking forward to memorial day weekend at Gingerman raceway.

    Also gave her a spring cleaning. Clay and sealant.

    2003 BMW 330i ZHP
    ESS Twin Screw Stage 2 - Wavetrac - Headers - Borla - BMW Performance
    Turner Motorsports - Powerflex - Hawk Performance

    Build thread: http://www.zhpmafia.com/forums/showt...yan-s-2003-ZHP
    Wheelwell: 2003 BMW 3 Series
    Fuelly: 2003 BMW 330i

  4. #184
    Join Date
    Dec 2016
    Location
    Greensboro, NC
    Posts
    3,552
    Those wheels look really good.

    I paired my 26mmM3 front sway with E36 M3 end links. Theyíre a little shorter (Iím lowered slightly) felt stronger to me, and seem to have taken the sharp angle out of the lower ball joint. I just didnít want to futz around with adjustable links, and ~20months later have no indication of them being an issue.
    Emma - 2005 BMW 330ci ZHP 6MT Estorilblau Individual

    Sportline 8s 18x8.5F - 18x9.5R | APEX ARC-8 18x8.5 Square | aFe Intake | 135i Brembo F/R Calipers | 26mm Front/20mm Rear Sway Bars | Z4 Mirror
    M3 Dead Pedal | Lexus ES300 Yellow Fog Light Retrofit | Koni Yellows/H&R Springs | Llumar CTX 40% | Coby Tri-Stitch Wheel & Boots

    Awaiting Install: M3 Wing Mirrors

  5. #185
    Join Date
    May 2012
    Location
    Northern Michigan
    Posts
    491
    Its been a boring winter, so not much has changed around here, except I'm really getting pumped about this upcoming track season, and I'll tell you why.

    Back in October, I finally, at long last, got the car out on the track for the first time after fixing my issues with the ESS tune that caused the throttle to be unpredictable and non-linear on track. And it was glorious! I can't believe how much easier the car is to drive! I shaved 6 seconds of my previous times at Gingerman, from 1:53.x to nearly breaking through 1:47.x. I really had a great time, the car performed great.



    But just look at that body roll. This is turn 3 at Gingerman and you can see that the M3 front sway bar is still no match for a car with full interior, 200tw Hankook RS4's, and factory original springs and dampers (with 145k miles!). With the car making power the way I want, its time to focus on suspension.

    My current plans are to pay homage to the Spec E46 class with regard to suspension and rolling hardware. So that means 255/40/17 on 17x9 wheels (check), stock rotors and calipers with pads and lines of choice (check), poly control arm bushings (check), steel sway bars with size of choice, and MCS single adjustable non-remote reservoir shocks. This is a tried and true track setup and I can build it in a way that allows it to evolve with me as I get more experience as a driver or if I decide to start stepping up to slicks for track days.

    Based on some research I've decided to try to use a "more bar, less spring" strategy in order to combat the body roll on track. So I ordered up the Turner Spec E46 sway bar set with 30mm front and 21mm rear bar



    The true Spec E46 specifications calls for 750/850# springs front/rear, but this is where I'm going to break with the spec for now. I still daily this car in the summer. From everything I hear, the MCS dampers do a phenomenal job with higher rate springs, allowing the car to be very compliant on the street despite higher spring rates. The other nice thing about MCS is that they are very friendly to spring rate changes, meaning I can make changes there without necessarily needing a re-valve. Given this freedom, and feeling conservative, I'm going to go a little softer with a 550/650# spring for now. And if its still too soft, its an easy and fairly inexpensive swap to bump up to the 750/850s. Another thing to consider after talking to Wyatt at MCS (who is also a ZHP owner, very cool!) is that in full street trim my car is heavier than a true Spec E46 racer (about 3300# compared to the spec limit 2850#) which means that on my car, those stiffer spring rates probably wouldn't' feel as stiff since there is more weight for them to support. So I'll keep that in mind after I get a few hundred miles or so on the new spring/damper setup, and if I want to ratchet things up, I can.

    Until then, I've got to wait for my favorite brown truck to show up, and I'll have some wrenching to do
    2003 BMW 330i ZHP
    ESS Twin Screw Stage 2 - Wavetrac - Headers - Borla - BMW Performance
    Turner Motorsports - Powerflex - Hawk Performance

    Build thread: http://www.zhpmafia.com/forums/showt...yan-s-2003-ZHP
    Wheelwell: 2003 BMW 3 Series
    Fuelly: 2003 BMW 330i

  6. #186
    Join Date
    Jun 2012
    Location
    Socal
    Posts
    1,197
    Can't wait to hear your review on your suspension set up. I ran the same 550/650 (although with AST 4100) and the turner bars. Honestly, on perfectly flat roads with minor bumps here and there, it was perfect. But if I'm in areas with a lot more rough roads, it was too stiff. Since I don't track at all anymore, I dropped my spring rate down even more since then. But I still wanna do MCS doubles down the line. I just felt like I didn't have enough adjustments at times with singles. Maybe I should keep those springs I listed for sale to try on the MCS before selling it.

  7. #187
    Join Date
    Jan 1970
    Location
    Southern California
    Posts
    17,180
    GL, keep us posted!

    Sent from my SM-G988U 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

  8. #188
    Join Date
    May 2012
    Location
    Northern Michigan
    Posts
    491
    Despite more time on my hands due to stay-at-home orders and time off from work, I've struggled to get motivated to work out in the garage. Partly due to the lack of good whether; its been cold. But having these show up has helped:





    Overall the installation was quite straightforward. Started with the fronts.







    And then tackled the rears







    With the turner rear shock reinforcement plates



    Things worth noting: The sway bar mounts on the MCS coilovers are about 1.5" lower than the stock struts



    So shorter sway bar end links are required. I installed a set from Turner that are about 1.2" shorter than stock, and everything fits nicely, the sway bar is nice and level.

    There's a ton of adjustability with the MCS coilovers. This is how high I have the front springs on the coilover body and can't imagine going much lower:



    I would love to report on how it rides and drives, but we had snow last night so I'll have to wait until the roads clear again, ugg.

    On another topic, the rugged look of my cupholder and center console has been bugging me. The original coating from the factory has gotten scratched over the years and is flaking off. I attempted to do this the cheap way by ordering up the alleged matched paint from SEM. This is how the cupholder turned out:



    it took a lot of prep work, and sanding, and even then there's still some scratches I can see. Also if you look closely the black color is a slight shade darker than the stock coating. So, I consider that a fail, and I sucked it up and ordered up new console and cupholder. These have gotten expensive recently, but its the only thing keeping my interior from looking flawlessly brand new.

    I held off installing the Turner sway bars for now. I wanted to see how the car drove after changing only the springs and dampers. So the sway swill go on next, along with the Turner monoball RTABs.
    2003 BMW 330i ZHP
    ESS Twin Screw Stage 2 - Wavetrac - Headers - Borla - BMW Performance
    Turner Motorsports - Powerflex - Hawk Performance

    Build thread: http://www.zhpmafia.com/forums/showt...yan-s-2003-ZHP
    Wheelwell: 2003 BMW 3 Series
    Fuelly: 2003 BMW 330i

  9. #189
    Join Date
    Mar 2014
    Location
    Denver, CO
    Posts
    763
    Nice updates!!!
    -Jeff

    '16 Outback 3.6R | Sold: '03 ZHP

    "There is a straight six engine at the front, a manual gear box in the middle, and drive goes to the back. That's page one, chapter one from the petrolsexual handbook." - Jeremy Clarkson

  10. #190
    Join Date
    Jun 2012
    Location
    Socal
    Posts
    1,197
    Damn, I've been waiting on your review of the suspension lol At least it's on now. I guess once you put on the sways, it'll be a more comparable review since I have the same sways. I have the same camber plates as well, but I'm planning to sell that to go with turner's street plates. Making my car more street compliant I guess.

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