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Thread: Underdrive Pulleys, who's got em? Worth the $$??

  1. #11
    Join Date
    Mar 2011
    Location
    Beaverton, OR
    Posts
    965
    Quote Originally Posted by 3ZHPGUY View Post
    I've got the Turner's and will say it was the best addition I ever made. I've owned my ZHP since 12-23-2006 @ 28,090 miles. The Turner Pulley's were installed on 3/7/2009 @ 64,725 miles. Best mpg before was 29.36069 and after (on the way to the 2013 ZHP reunion) 32.07311. The performance upgrade is significantly noticeable and today @ 137,250+ I have only had one issue with the power steering pump that cured itself and may not be related.

    (added) Turner makes 2 sets, one for high end stereo, one for max power. I have max power.

    One interesting fact: a few years ago, I took a Dinan ZHP for a test drive from EAG with my Son (27) and Son-in-Law (29). The car had a Dinan CAI, Throttle Body & Stage 3 software. During and after the test drive, it was the general consenses, hands down between the three of us, that mine would have undoubtedly left that thing in the dust, was far more responsive, and had significantly more pull
    Great info, I appreciate the feedback. Odd how your experience is drastically different than the others, but if it's working on your car then I guess that's money well spent! So you have the 3 pulley "power" kit which comes with the extra alternator pulley correct? Maybe that's the difference? But 32+ mpg?? That's way more than even the factory spec, which we all know is high to begin with. What are you feeding that thing?!
    2009 BMW 550i M-Sport


    BMW CCA Member . SAT (S2TBA) . RPI V3 Ram Air Scoop . Gloss black kidneys & 550i badge . HID fogs . LED halos . LED license plate kit . Black aluminum ///M pedals . Body color (A68) roof & trunk spoilers . K&N . Charcoal filter delete .

    Build Date: 10/9/08
    VIN# WBANW53589CT55595
    Platinum Gray Metallic A68

    2004 330i ZHP - Dead
    2001 330i Sport - Sold
    2004 330i ZHP - Sold
    1999 E36 M3 - Sold

  2. #12
    Join Date
    Jan 1970
    Location
    Huntsville, AL
    Posts
    3,946
    Quote Originally Posted by Cadeez View Post
    Great info, I appreciate the feedback. Odd how your experience is drastically different than the others, but if it's working on your car then I guess that's money well spent! So you have the 3 pulley "power" kit which comes with the extra alternator pulley correct? Maybe that's the difference? But 32+ mpg?? That's way more than even the factory spec, which we all know is high to begin with. What are you feeding that thing?!
    Yes, that is correct, I am using this 3 pulley set. http://www.turnermotorsport.com/BMW-...r-pulleys.aspx As for the food: mainly V-Power and the MAX mpg was just after I installed new NGK plugs but, before I changed out the my Dinan CAI filter.

    Dinan; Hign Flow Intake System, & Strut Tower Brace
    Turner Motorsports; Underdrive Power Pulleys
    Koni Sport, Bridgestone; Potenza RE-11, Coby Wheel
    Stewart High Performance Water Pump
    Hawk High Performance Street 5.0 Brake Pads
    Brembo Rotor

    The purposeful face of a formidable athlete:

    The spine-tingling 330i Performance Package.

    Purchased CPO on 12/23/2006 with 28,090 miles

  3. #13
    Join Date
    Feb 2014
    Location
    Picton, ON
    Posts
    6,025
    Quote Originally Posted by 3ZHPGUY View Post
    No problem, Peter. I have every tank of gas logged for well over 100,000 miles. When I was in Ohio, I could get a pretty good calculation of before and after however; now that I'm in the back hills of Southern Middle Tennessee, it's way too much fun, to keep my foot out of it, to calculate mileage. Let me know if you need the data I have.

    guy
    thanks, guy! i'm always interested in MPGs but i am constantly calculating what i'm getting so i have a delta point for my car already. my best tank so far has been 33.x mpg, although that was in the summer.


    Quote Originally Posted by Cadeez View Post
    Great info, I appreciate the feedback. Odd how your experience is drastically different than the others, but if it's working on your car then I guess that's money well spent! So you have the 3 pulley "power" kit which comes with the extra alternator pulley correct? Maybe that's the difference? But 32+ mpg?? That's way more than even the factory spec, which we all know is high to begin with. What are you feeding that thing?!
    LOL. i think driving style and roads you are driving play a key part... for example, i live in the sticks, so the majority of my driving is around 50mph, and 75mph when i'm on the highway. i do very little stop 'n go... however i do a lot of trips to 6800rpm. i typically average about 30mpg in the summer and 25mpg in the winter.

    peter
    peter

    2009 BMW 335i M Sport 6MT

    2015 VW Golf TSI Comfortline 5MT

    2007 BMW X3 3.0si M Sport 6MT

  4. #14
    Join Date
    Mar 2011
    Location
    Beaverton, OR
    Posts
    965
    Quote Originally Posted by 3ZHPGUY View Post
    Yes, that is correct, I am using this 3 pulley set. http://www.turnermotorsport.com/BMW-...r-pulleys.aspx As for the food: mainly V-Power and the MAX mpg was just after I installed new NGK plugs but, before I changed out the my Dinan CAI filter.
    Rock n Roll, thanks again!
    2009 BMW 550i M-Sport


    BMW CCA Member . SAT (S2TBA) . RPI V3 Ram Air Scoop . Gloss black kidneys & 550i badge . HID fogs . LED halos . LED license plate kit . Black aluminum ///M pedals . Body color (A68) roof & trunk spoilers . K&N . Charcoal filter delete .

    Build Date: 10/9/08
    VIN# WBANW53589CT55595
    Platinum Gray Metallic A68

    2004 330i ZHP - Dead
    2001 330i Sport - Sold
    2004 330i ZHP - Sold
    1999 E36 M3 - Sold

  5. #15
    Join Date
    Jan 1970
    Location
    32.8 N, 117.3 W
    Posts
    7,616
    I have the TMS set. I can't really say if they do anything on the butt dyno since my car has so many other mods, but if you have money burning a hole in your pocket then get them as they actually do give you some power on the real dyno.

  6. #16
    Join Date
    Jan 1970
    Location
    Southern California
    Posts
    16,641
    Guy that is awesome. I have the set from Turner as well.
    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

  7. #17
    Join Date
    Mar 2011
    Location
    Beaverton, OR
    Posts
    965
    Quote Originally Posted by Hermes View Post
    I have the TMS set. I can't really say if they do anything on the butt dyno since my car has so many other mods, but if you have money burning a hole in your pocket then get them as they actually do give you some power on the real dyno.
    I wouldn't say I have $$ burning holes in anything haha, I'm just looking for a little more oomf on the cheap, better gas mileage wouldn't be bad either. There's not a lot of performance/hp mods to do to these cars without getting serious like cams, full exhaust or superchargers, so I'm trying to squeeze out all the hp I can with the $$ I do have, this seemed like a decent option. General consensus of this thread is no noticeable power increase, which is to be expected I guess. Which puts these pulleys in the same realm as a CAI as far as price and performance goes...parts look great and have proven dyno power, but no noticable power increase.
    2009 BMW 550i M-Sport


    BMW CCA Member . SAT (S2TBA) . RPI V3 Ram Air Scoop . Gloss black kidneys & 550i badge . HID fogs . LED halos . LED license plate kit . Black aluminum ///M pedals . Body color (A68) roof & trunk spoilers . K&N . Charcoal filter delete .

    Build Date: 10/9/08
    VIN# WBANW53589CT55595
    Platinum Gray Metallic A68

    2004 330i ZHP - Dead
    2001 330i Sport - Sold
    2004 330i ZHP - Sold
    1999 E36 M3 - Sold

  8. #18
    Join Date
    Jan 1970
    Location
    Southern California
    Posts
    16,641
    That's my whole mod story... bunch of little things that hopefully add up. Pulleys, Intake, Dinan Throttle Body, Exhaust, Tune, eventually Stewart Water Pump (waiting to be installed), etc.
    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

  9. #19
    Join Date
    Oct 2011
    Location
    Silicon Valley
    Posts
    1,630
    My experience is in between. They provided a noticeable, but small difference and the difference is biggest at higher RPMs. The ZHP has the Evosport 3-pulley set (alternator pulley had to be modified to fit Bosch alternator with oval plug) and E36 has UUC 2-pulley set. I dynoed the ZHP before and after. Doing underdrive pulleys plus Shark Injector gave me +9 RWHP (peak WHP, not peak difference). Since the Shark was advertised as delivering +4HP alone, I guess the pulleys offered +5HP.

    Later I dynoed with pulleys, intake, Shark, VANOS seal refresh, and lightweight wheels and the total boost was +19 RWHP. The dyno guy had moved his dyno from his shop garage to a truck (portable dyno). He claimed it was the same physical dyno but to me it still makes the before and after results hard to compare. Also my car was a little low on HP when I got it (like 189.5HP when I expected it should have been 195).

    So it comes down to whether +5HP is worth $200 to you. If I were doing it all over again, I would do front swaybar, stickier tires, lighter wheels, and some track days or autocross events before getting the pulleys, but I'd still get them.

    Edit: Actually I'd get a shorter diff (like 3.46) before getting pulleys. I heard that's a much better bang for the buck and can be found as low as $250 online for a used one. But it will probably your gas mileage worse. And for power/$ I heard (but have not tried) headers are a much better deal than the pulleys. But hard to keep headers on a street-legal E46 in California.

  10. #20
    Join Date
    Mar 2011
    Location
    Beaverton, OR
    Posts
    965
    Quote Originally Posted by johnrando View Post
    That's my whole mod story... bunch of little things that hopefully add up. Pulleys, Intake, Dinan Throttle Body, Exhaust, Tune, eventually Stewart Water Pump (waiting to be installed), etc.
    Glad I'm not alone! But I've got quite a ways to go to even get to where you are. How does a different water pump add hp/performance??

    Quote Originally Posted by LivesNearCostco View Post
    My experience is in between. They provided a noticeable, but small difference and the difference is biggest at higher RPMs. The ZHP has the Evosport 3-pulley set (alternator pulley had to be modified to fit Bosch alternator with oval plug) and E36 has UUC 2-pulley set. I dynoed the ZHP before and after. Doing underdrive pulleys plus Shark Injector gave me +9 RWHP (peak WHP, not peak difference). Since the Shark was advertised as delivering +4HP alone, I guess the pulleys offered +5HP.

    Later I dynoed with pulleys, intake, Shark, VANOS seal refresh, and lightweight wheels and the total boost was +19 RWHP. The dyno guy had moved his dyno from his shop garage to a truck (portable dyno). He claimed it was the same physical dyno but to me it still makes the before and after results hard to compare. Also my car was a little low on HP when I got it (like 189.5HP when I expected it should have been 195).

    So it comes down to whether +5HP is worth $200 to you. If I were doing it all over again, I would do front swaybar, stickier tires, lighter wheels, and some track days or autocross events before getting the pulleys, but I'd still get them.

    Edit: Actually I'd get a shorter diff (like 3.46) before getting pulleys. I heard that's a much better bang for the buck and can be found as low as $250 online for a used one. But it will probably your gas mileage worse. And for power/$ I heard (but have not tried) headers are a much better deal than the pulleys. But hard to keep headers on a street-legal E46 in California.
    Great info, thanks Costco! I in fact live very close to a Costco myself haha
    2009 BMW 550i M-Sport


    BMW CCA Member . SAT (S2TBA) . RPI V3 Ram Air Scoop . Gloss black kidneys & 550i badge . HID fogs . LED halos . LED license plate kit . Black aluminum ///M pedals . Body color (A68) roof & trunk spoilers . K&N . Charcoal filter delete .

    Build Date: 10/9/08
    VIN# WBANW53589CT55595
    Platinum Gray Metallic A68

    2004 330i ZHP - Dead
    2001 330i Sport - Sold
    2004 330i ZHP - Sold
    1999 E36 M3 - Sold

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