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Thread: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    What gear was this run done in.

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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    4th gear.

    Gonna advance the timing this week and hit the dyno on the weekend. Hoping for 155 Whp!

    Has anyone ever actually seen a lighter flywheel generate better numbers on the dyno? I'd get one anyway for drivability, but in terms of power, it's like one of those things they should do on Mythbusters...

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    Sr Member dentinger's Avatar
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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    from wat my friend says, every 1 lb you take off the flywheel, you gain about 2. or something like that.....
    he just got an underdrive pulley for his jetta, so once my header's are installed, we both want to get our cars dyno'd.
    and i want to e-test my car too. just to see if it'll pass with headers and a catback...
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    Member doughboyr6's Avatar
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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    the lightened flywheel has some negative side effecs...check out Mazda3forums for more details

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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    With a lightened fly wheel the engine will rev faster but you'll lose torque at the top end, which may or may not result in HP loss. Reducing the weight is only beneficial to a certain point

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    Sr Member dentinger's Avatar
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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    ya, and from wat i read on M3forums, its also harder to start the car, because of the less rotating mass. also, you have to push more gas when moving from a stop, or something like that.

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    Jr Member theurgy's Avatar
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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    I say your next step is fuel management, and upgraded injectors, timing advance and those lightweight pulleys.

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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    Finally got around to doing the timing advance today! Just got back from a nice long cruise and she's smooth as velvet. With any luck I'll dyno this coming weekend. =)

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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    Very nice mods. I'm interested to see what those dyno results will yield this time..

    2006 Mazda 3 Sport GT 5 speed manual. Titanium Grey. Eibach Pro-Kit. TWN Shift Bushings. 13% Solar Gard HP Tint. Black painted brake calipers (Dupont brush on kit) Love stains in the back. New mod: replaced original Gt bumper with a new one without plate holes. Relocated plate. (Thanks raccoon!)

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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    noob queston here: timing advance??? what is it? any reading recommendation? thanks
    2007 Mazda3 GT-M 6spd, no mod yet , crystal white pearl

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    Jr Member theurgy's Avatar
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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    Taken from MAzdas247.com:

    Ignition Timing Advance (Monzta's Timing Mod)
    Price: $0
    Install: 20-40min (http://**********************/index....5573#msg585573)
    Further Reading: http://www.miata.net/garage/KnowYourCar/S10_Timing.html
    Pros: Take advantage of higher octane, smoother acceleration, more hp/tq, ECU pulls back when engine knocking is detected
    Cons: 1.6L has the sensor in a fixed position, Cost of using higher octane, Possible knocking from 87
    Peak Power Gains: +6whp/3wtq (using 89 octane and timing vs. 87; your mileage may vary)
    What you're basically doing is igniting the fuel mixture a little sooner by moving the slotted crank position sensor to advance the ignition timing. It will still be within factory specs (8 BTDC set at factory according to Service Manual, 10 BTDC according to Service Highlights- that info alone could be why some stock 3s are putting out slightly higher #s than others). This modification only deals with the ignition; the cam is not affected- therefore, the VVT operations/changes will still engage at the same rpms. While 87 octane works with this modification, those who have experienced knocking/pinging use 89 octane to compensate.

    I advise you to reset the ECU so the timing curves/maps can be learned quicker. It will most likely stall just once while trying to find the new idle speed (it won’t stall again while it’s idle hunting the next time you reset the ECU). Some users report a slightly lower idle speed after doing this mod, so don't be surprised if it drops lower than you're used to. You might also want to add some fuel injector cleaner every few tanks if you’re using 89 or higher.

    My observations on different octane after this mod:
    I've tried running 87 and it didn't seem to accelerate as fast on the freeway (ECU possibly retarding back the timing to a "safer" level). Burned through 2 gallons pretty fast though. I feel almost no difference between 89 and 91 for my 3, but both allow me to get better performance and smoother/quicker acceleration at the cost of lower gas mileage compared to the 87.

    From Monzsta, the mod's originator:
    Factory timing is highly conservative, plus the ever-present knock sensor will protect the engine. Worst case scenario is the mod won't show any gains, meaning that the engine is utilizing all the advance it had previous, and the ecm is pulling out the added timing due to spark knock. Being users of this mod ARE reporting gains, it would seem the engine can use more timing. My car hasn't shown any improvement in stock form with 87 vs. 93 octane and it seems to now after advancing the timing, indicating the ecm is finally using the knock sensor to determine what grade of fuel I'm running and adapting it's timing maps to compensate. (as it should if the engine were in a max effort tune from the factory, like a 'Vette's.)

    Timing Advance + 89 octane dyno:
    @3.5k: +2hp, 4tq
    @4.5k: +3hp, 4tq
    @5.5k: +4hp, 4tq
    @6.0k: +5hp, 4tq
    @6.5k: +5hp, 4tq


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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    Quote Originally Posted by Edmonius View Post
    Finally got around to doing the timing advance today! Just got back from a nice long cruise and she's smooth as velvet. With any luck I'll dyno this coming weekend. =)
    any result? and how was the timing advance?

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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    Haven't had time to get to the dyno yet, but it feels good...

    The butt dyno says there's a gain, but I'm dying to find out. Unfortunately for the dyno, but fortunately for me, my springs and swaybar just showed up so I think there'll be one more trip to the shop before I get her on the rollers. =)

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    Sr Member SilentJay's Avatar
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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    Are there actually lighter pullies (sp?) for the 3? My last encounter with under drive pulleys have either rendered the AC useless as it leaves the condenser out of the loop, or it causes under-charge problems with the alternator. Maybe i'm totally on crack...



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    Sr Member 3GFX's Avatar
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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    There are lighter pullies, with all the affects you listed
    - - - - - - | NOW | 08' VW Jetta 2.0T | - - - - - - - | BEFORE | 04' Mazda 3 GT/GFX | - - - - - -

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    Sr Member SilentJay's Avatar
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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    Fantastic. Well, I like my AC, and I like sufficient charge even more, so I guess those are out of the question. Hmm...

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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    Yeah, I'm not a fan of underdrive pullies, pretty much for all the reasons you listed. I've always had good experiences with lightened flywheels though, and since I'll need a new clutch anyway...

    I'll get the car on a dyno again as soon as she gets some springtime lovin'. And maybe a new IM. =)

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    Moderator cwp_sedan's Avatar
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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    I ran an UD pulley on my old Grand Am and it didn't have any ill effects on the charging or cooling system (water pump, crank, alt, etc. were all run off of the belt). If I could would I do it on my 3, probably not.

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    Newbie 2hit6's Avatar
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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    Nice numbers... Planning to take it on the track? Lowing the weight of the car would help alot... Just a thought!

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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    u dug up a thread I was actually searching for! if this guy is pulling 151 WHP than Iam probebly pulling 130 stock ... if that.... faaaak

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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    Quote Originally Posted by mazdas3sporte View Post
    u dug up a thread I was actually searching for! if this guy is pulling 151 WHP than Iam probebly pulling 130 stock ... if that.... faaaak
    lol what are you worried about?

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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    Quote Originally Posted by phil05gx View Post
    lol what are you worried about?
    what do u mean what am i worrying about, ???

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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    Aww, that car is long since dead. Rockin' an MS3 now.

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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    good move up, u lucky u got the current speed 3 , the new MPS is an all around shit car, looks like a toyota matrix... boo

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    Newbie Gen1GT's Avatar
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    Default Re: Mazda 3 Sport GT 151.41 FWHp, 150.01 FWTq

    Quote Originally Posted by MZ3_GS View Post
    With a lightened fly wheel the engine will rev faster but you'll lose torque at the top end, which may or may not result in HP loss. Reducing the weight is only beneficial to a certain point
    Horsepower and torque are directly related. Horsepower is just the rate at which you make torque. Making torque faster is just as good as making more torque. Their relationship is expressed with this formula:

    HP= (Torque X RPM)/5252

    So if your torque is increasing, then so is your horsepower. Also, if your engine speed is increasing, then usually is your power.

    A lightened flywheel is just tricky because there is less rotational interia keeping the engine turning and recipricating when you let off the throttle.

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