Negative consequences are a slower spinning water pump and firmer steering. There's nothing else to it. That's the issue with producing a car for the generally lazy and non enthusiastic population.
Campieri
Negative consequences are a slower spinning water pump and firmer steering. There's nothing else to it. That's the issue with producing a car for the generally lazy and non enthusiastic population.
Porsche 944 Turbo Build
One ride and you'll understand why most rocket scientists are German.
My ZHP Build 2004-2014 RIP
Boss
Well, if you had the potential to have to repair these under warranty, and let's say the difference was 90% reliability vs. 80%, you might take the 90% as a manufacturer. As a performance person you might say the 10% less is worth it. So yes, from what I read, technically there are negative consequences, but it's what you feel the risk/reward is. I don't think that's been quantified.Originally Posted by zj96sc
Randeaux/Rando/John/jr - '06 Cic ZHP; Southern California
"ZHP or not, I still like you"
ZHP Performance Package, Cold Weather Package, Leather, Jet Black/Black/BlackCube, NAV, Anthracite Black "my individual" interior trim
ESS Stage 1 Twin Screw Supercharger, Sprint Booster, BMW Perf Intake, Magnaflow Exhaust, Dinan TB & STEP S/W, UCC Sway Bars, Apex EC-7 18x8.5 ET38
Suspension: AST 44100 dampers, Bimmerworld front adjustable end links, Swift springs (8K front, 10K rear), Vorshlag camber plates
Dynavin D99+, Hardwire V1 (w/V1 Connection), BSW Stage 1 Speakers, Kicker Amp/Subwoofer
BMW Performance Strut Brace, Orion V2 Angel Eyes, No-holes License Plate, SMG Paddle Shift Mod, Besian VANOS, Gold DISA, Fan Delete, M3 Side Mirrors
Note: Actual car no longer resembles signature picture
Boss
I don't think there are necessarily negative consequences. I think there is a calculable potential for negative consequences. There's a difference.
Someone can take the information that is out there and decide that the increased potential is acceptable to them, where BMW would not find it acceptable.
-Be yourself; everyone else is already taken.
ZHP Pre-Ride Briefing
2005 ZHP, Alcantara, Silver Cube, Nav, Sharked, BMW Perf Intake, BMW Perf CF Strut Brace, CF Valve/Fuel Rail Covers,
Shadowline Grills, CF Splitters, Fog Light Inserts, Euro-mirrors, CDV Delete, Beisan vanos, GAS DISA, BP Coded
Wiseguy
I installed under drive pulleys on my old 97 Chevy 4x4 years ago. It slowed down the alternator to much and had to remove them. That truck had dual electric cooling fans and while running the under drive pulleys the fans pulled so much amperage it killed the battery.
Curious if slowing down the water pump on a BMW that has cooling issues is a good idea or not? Wouldn't it be better to do the mechanical fan to electric fan swap?
BAV Stage 1 - BlueBus - UltraGauge - V1 - Orion V4's - ARC-8's - Brembo 996
TTFS Engine/SMG Tune/CSL 255 - SGT Headers/Sect 1/SCZA - Evolve Eventuri
VIS XTS CF Hood - CF Lip/Console/Diffuser - OE CSL Trunk - BWS 500S 9k/11k
Messaggero
has anyone installed the ECS under drive pulleys? pros / cons
Enforcer
Assuming everyone is talking about the ECS WaterPump pulley; The pulley is overdriven, meaning the pump spins faster then OEM.
There are no issues with running Pulleys. On M54B30's only the waterpump and power steering pulleys are under driven.
There is no difference in underdriving the waterpump when it comes to temp since our electric thermostat will compensate and keep things cool.
Enforcer
It sure was!
I may have the RE pulleys for sale soon. Let me know if anyone is interested.
Big Earner
i'm interested in the RE pulleys. how is the install?
--Wes--
04 330i ZHP Oxford Green/Natural Brown
04 330Ci ZHP Silvergrey/Alcantara (RIP)
Big Earner
Why are you selling them?
-Chris-
2003 ZHP Sedan - Jet Black on Sand - SOLD
Big Earner
i think he's looking to sell his car, so probably parting out.
--Wes--
04 330i ZHP Oxford Green/Natural Brown
04 330Ci ZHP Silvergrey/Alcantara (RIP)
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