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Old 05-25-2013, 12:41 AM   #37
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What I Drive: 2004 Silver zx5 Svt

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Originally Posted by CotyM View Post
I was looking around (bored) on CFM and I ran into "underdrive pulleys" are these any good?

Are gains worth it? I run a 200w amp with 100w TDP for a sub (not mega bass, but provides a good sound which is all I wanted) with no capacitor. Would I have any problems with the alternator? I drive mostly highway miles mixed day/night with sometimes up to 20mins in traffic at a time. I'm aware that a tune can edit the idle and I do plan to bring it to 1000.. but I don't want to go about 1200...

Also while looking for info I saw the old ones did not have a vibration damper but they looked allot different then these ones... Is there anyone that can tell me if the new ones have a damper and if not if it's that big of a deal for the ZETEC?

Remember this is my DD and I'm looking to improve some HP and if I can keep some mpgs but not so much that I have a vibrating pig. I'm mostly only interested in these to cut down on the A/C drag...

Also what's the deal with off road pipes being upwards of $200? that's more than a good cat for a bone stock ZETEC
You wont see much gain with the pulleys maybe 1-3hp iirc. Best way to cut off A/C drag is to just turn it off lol you cant have it on at the track anyway. Now I am not sound system expert but I believe its in your best interest to have a capacitor to prevent damage to the alternator. Trust me they are no fun to change when they die they are almost impossible to get out. If you have the stock motor mounts on the car you shouldn't feel much difference in added vibration from raising the idle to 1000, I think you will have more noise then anything else. Just a side note don't get polly motor mounts unless your committed to driving a "vibrating pig" everyday.
Can I Haz turbo?
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