+11 on the piggyback style!..jdavis96gt said:I've heard of March pullys. They're just the cheap piggyback style. Try eBay, I think I saw some steedas on there yesterday for $120. I'd stay away from piggyback ones. I got my steedas brand new on eBay for $71. Have some patience and a deal will pop up.
Any power "increase" (it's not really an increase, it is just more of the engine's power getting to the rear wheels) from UDPs comes from two areas.How much hp can you expect with steeda or bbk pullys?
Nice. +11cliffyk said:Any power "increase" (it's not really an increase, it is just more of the engine's power getting to the rear wheels) from UDPs comes from two areas.
1) The drive ratio from the crank pulley to the engine accessories is changed so as to reduce the speed of those devices and therefore reduce the amount of power they consume--leaving more engine power to get through to the wheels.
The AC compressor and power steering pump just run at the new lowered speed, howver UDP "kits" typically include replacement water pump and generator pulleys to restore some driven speed to those--both being somewhat critical to proper operation.
2) The altered drive ratios also mean less engine power is required to accelerate ("spin-up") the driven accessories--this accelerative power is then available to the wheels as well.
12 to 15 HP more to the ground is perhaps possible under best case conditions--maybe--with the AC on, and the generator operating near full capacity; however to be realistic the PCM cuts the AC out at WOT anyway and it is unlikely the generator would be working at full load during a WOT run. So think more like an additional 3-5 HP getting to the wheels.
Under normal cruising conditions you may gain a bit of fuel economy, but don't expect too much there either.
All that said I have the Steeda pulleys and did notice improved performance in the lower gears and under hard acceleration, here again though if you are the sort that never "floors it", and always shifts at 3k rpm or less, you will never know they are there...
If its the wrong water pulley, I got the steeda 01-04 water pulley. I'd trade u. Mines brand new.OP, make sure the water pump pulley is the correct one for your model year, pre-2001 models used a "long nose" water pump, 2001+ had a short nose water pump--also I have seen some 2001 early production models with the long-nose water pump, so check to be sure...