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  • underdrive pulleys from zzp...

    did a search and found that a few people have them, how do you like them? do you have any problems with the battery charging or the engine running hotter?? looking these to be one of my next mods just curious thanks...

    merlin
    2002 Firebird<br />2003 Yamaha YZF 600R

  • #2
    I've heard +4-5whp with the waterpump pulley alone.

    I also don't think the tiny little alt pulley is worth much unless you want to overdrive it... it also requires an impact wrench to change unlike the simple waterpump [img]smile.gif[/img]
    2002 5-spd NBM Camaro
    Details: www.1lev6.com

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    • #3
      My car doesn't seem to run any warmer than usual. As far as HP gains, I don't know. Based on sound principle, so I bought it. If someone switched it out on me for a stocker, I probably wouldn't notice it performancewise.

      Ah hell, save your money. Do big expensive N/A mods, or juice or blow it.

      Sorry, you didn't ask for all that. :D
      <b>1998 Firebird 3800 Series II, A4</b><br />Direct-Flo Lid,K&N Filter,DEE TB Spacer,TPS-TEC,ZZP Mini-AFC,Raised and Cutout Airbox 7mm,BMR STB & Boxed LCAs,KYB AGX Shocks,Drilled/Slotted Rotors,180* Thermo,2.5\" Catco Cat,Dynomax 2.75\" custom catback,Kumho Ecstas/245,Jet Stage 2,3.42,Edge Racing 2870 Stall,B&M Tranny Cooler,B&M Deep Tranny Pan,LSD,AAM Girdle,1LE DS,NX Wet Kit,MSD DIS-4,MSD Blaster Coil Packs,Taylor Spiro Pro 8mm Wires,NGK TR6\'S gapped .045,ZZP UD WP Pulley,SLP Fan Switch,TT II\'s<br />N/A: 15.6342 @ 88.44 (On stock converter. Strugglin\' to beat it.)<br />Nitrous 50 Shot: 14.7463 @ 93.49

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