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Old 11-03-2013, 08:10 PM   #26

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Drives: 2010 Camaro 2SS/RS LS3
Join Date: May 2012
Location: NJ
Posts: 1,732
Some people have all sorts of problems with UDP installs while others have no issues at all. I had mine installed and there were no installation, driveability, or accessory issues. The battery is fine, the alternator is fine, the car starts right up, and the AC is fine. What I think may be contributing to some of the problems is that some people or shops may not be installing it correctly. There is a specific way the pulley is supposed to be mounted and bolted on. It has to be followed precisely. Make sure that whoever does the install knows the procedure and follows it to the letter. The install instructions should come with the pulley. If it doesn't, then find them online and print them out. When you go to the shop, make sure they follow it even if you have to stand over them and watch them do it. If it is done correctly and isn't a rush job, then I'm sure you won't have any problems.

And make sure you get a brand new pulley bolt from the dealer if one doesn't come with the pulley. Do not try to re-use the old bolt.
Nadia (2010 Camaro 2SS/RS LS3) - Vararam CAI - SLP Underdrive Pulley - V-Max TB and Power Wedge - OBX 1-7/8 LTs with HF Cats - OBX 3" Cat-Back - Custom Predator Tune - BER Ported Intake Manifold!!

Esmeralda (03 GT) - UDP, CAI, PP intake manifold/upper plenum/75mm TB, 4.10s, fully rebuilt/upgraded trans w/ Transpak, 2400 stall converter, full O/R exhaust, 04 Cobra tank/dual 255 LPH pumps, Sniper Tune!!

Saving the world...1 hp at a time!!
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Old 11-03-2013, 11:05 PM   #27
LSX Camaro
Master ASE, GM, LSX Tech.
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Drives: 2010 Camaro SS
Join Date: Oct 2012
Location: Laguna Niguel, Ca.
Posts: 692
Fluidampr 25% under drive on accessories other than A/C. The output of the alternator is controlled by the Body Control Module (BCM) and it is all determined by load and need.
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