ESS 96mm vs 92mm pulley - BMW M5 Forum and M6 Forums
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post #1 of 28 Old 24th March 2012, 08:20 PM Thread Starter
jselig
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ESS 96mm vs 92mm pulley

Okay so we all know the 92mm pulley gets us about ~8lbs of boost. But without proper cooling the engine will pull timing and knock. So with the advice from a very smart man I have gone back to my 96mm pulley until my meth kit arrives.

But here is what I am wondering. Yes the 92mm pulley makes more boost and more power but does the 96mm pulley bring the power on slightly sooner due to the larger size?
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post #2 of 28 Old 24th March 2012, 08:57 PM
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No, just the opposite. The 92 will start building boost at a lower rpm because its spinning faster.

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post #3 of 28 Old 24th March 2012, 09:08 PM Thread Starter
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post #4 of 28 Old 25th March 2012, 12:01 AM
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Quote:
Originally Posted by jselig View Post
Okay so we all know the 92mm pulley gets us about ~8lbs of boost. But without proper cooling the engine will pull timing and knock. So with the advice from a very smart man I have gone back to my 96mm pulley until my meth kit arrives.

But here is what I am wondering. Yes the 92mm pulley makes more boost and more power but does the 96mm pulley bring the power on slightly sooner due to the larger size?

And you will need larger injectors and a tune too, watermeth will help reduce and elevate knock and cool the extra heat generated by the smaller pulley, but overall you need to get more fuel in there and with 315cc it isnt going to happen at top end. When i installed my bigger pulley even with 50/50 water meth it wasnt running right, it was knocking and it actually felt slower, or less smooth and linear throughout, did lots of dyno runs and remapped the ecu moved to 450cc and job done I know alot of people run with 315cc and bigger pulley but the s62 engine is very resilient to knock and it was only from moving back and forth from 96mm to 92mm and doing lots of dyno runs with monitoring AFR's EGT's and AIT's and other parameters that i found out what was going on. But very wise moving back to the 96mm, it will run alot cooler
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post #5 of 28 Old 25th March 2012, 03:25 PM
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Quote:
Originally Posted by M5_MONSTER View Post

And you will need larger injectors and a tune too, watermeth will help reduce and elevate knock and cool the extra heat generated by the smaller pulley, but overall you need to get more fuel in there and with 315cc it isnt going to happen at top end. When i installed my bigger pulley even with 50/50 water meth it wasnt running right, it was knocking and it actually felt slower, or less smooth and linear throughout, did lots of dyno runs and remapped the ecu moved to 450cc and job done I know alot of people run with 315cc and bigger pulley but the s62 engine is very resilient to knock and it was only from moving back and forth from 96mm to 92mm and doing lots of dyno runs with monitoring AFR's EGT's and AIT's and other parameters that i found out what was going on. But very wise moving back to the 96mm, it will run alot cooler
When you purchase the ESS 550 kit and request the 92mm upgrade what does ESS supply? 92mm pulley and tune only? What about the 450cc injectors? Do they have a tune for the 450cc injectors or only the 315cc?

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post #6 of 28 Old 25th March 2012, 05:00 PM
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Quote:
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When you purchase the ESS 550 kit and request the 92mm upgrade what does ESS supply? 92mm pulley and tune only? What about the 450cc injectors? Do they have a tune for the 450cc injectors or only the 315cc?
ESS sell the kit with the 96mm, if you request the 92mm with smaller belt it invalidates your warranty. They have only two tunes one with headers and one without, they do not have a tune for the larger pulley and they only supply 315cc injectors
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post #7 of 28 Old 25th March 2012, 08:06 PM
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Originally Posted by M5_MONSTER View Post
ESS sell the kit with the 96mm, if you request the 92mm with smaller belt it invalidates your warranty. They have only two tunes one with headers and one without, they do not have a tune for the larger pulley and they only supply 315cc injectors
If you were going to do it all over again with ESS and want the most SAFE 500+whp what would you recommend?

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post #8 of 28 Old 25th March 2012, 09:04 PM
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Quote:
Originally Posted by RUFM5 View Post
When you purchase the ESS 550 kit and request the 92mm upgrade what does ESS supply? 92mm pulley and tune only? What about the 450cc injectors? Do they have a tune for the 450cc injectors or only the 315cc?
If you are getting a water/meth kit, there's no need for larger injectors if you go with the 92mm pulley as long as you run at least a 50/50 mix by weight, not volume. A true 50/50 mix will make your A/F ratio run rich by ~1 pt.

For example, if you're running a 92mm pulley without meth inj and have an A/F ration of 13, with a 50/50 mix meth inj, it will drop to 12. more if you do a higher concentration of meth. Alot of people forget that 50/50 isn't just adding water for cooling, but also meth, which in itself is a fuel. People get thier cars all the time without the meth, then wonder why they lose power when they spray. It's because now thier tune is running rich.

I would recommend a larger capacity fuel pump, or at least a boost-a-pump application for additional safety.

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post #9 of 28 Old 25th March 2012, 10:49 PM
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Originally Posted by RUFM5 View Post
If you were going to do it all over again with ESS and want the most SAFE 500+whp what would you recommend?
If i was going to do it all again then i would do the below:

1. Bigger injectors
2. 92mm Pulley
3. Custom tune
4. CCV Bypass
5. Silcione Hose Intake
6. CNC Plenum Plates
7. Intercooler
8. Watermeth spraying on and after intercooler
9. AIT Relocation too the intercooler after pipe to reduce heat soak
10. Overall better hose clamps and silicone pipes

The ESS kit is not a bad kit, but with anything us humans buy, we think of ways too improve and make the kit better and more safe
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post #10 of 28 Old 26th March 2012, 12:23 AM
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Quote:
Originally Posted by Ransidd View Post
If you are getting a water/meth kit, there's no need for larger injectors if you go with the 92mm pulley as long as you run at least a 50/50 mix by weight, not volume. A true 50/50 mix will make your A/F ratio run rich by ~1 pt.

For example, if you're running a 92mm pulley without meth inj and have an A/F ration of 13, with a 50/50 mix meth inj, it will drop to 12. more if you do a higher concentration of meth. Alot of people forget that 50/50 isn't just adding water for cooling, but also meth, which in itself is a fuel. People get thier cars all the time without the meth, then wonder why they lose power when they spray. It's because now thier tune is running rich.

I would recommend a larger capacity fuel pump, or at least a boost-a-pump application for additional safety.
Why not install larger injectors and get it retuned by say Evolve? Maybe the meth would not be needed if the fuel levels are fine on 8 psi?

Installing a 92mm pulley on a 96mm tune wouldn't be ideal as it seems this is what folks getting the 92mm pulley are doing?

Maybe even getting the ESS 525 kit, add the 92mm pulley, meth 50/50, 450cc injectors and a new Evolve tune?

Shark Injector RACE Version 93 (Tuned By Jim Conforti)
CNS Racing Power Clutch kit - Oversized 10.5 Inch Carbon Metallic disk w/ lightweight Dualmass flywheel(DINAN S3 Design w/ zero gearlash noise)
Supersprint Headers with JETHOT coating (Extreme Sterling)
CNS Racing Cat-Back Exhaust
OZ Racing Superleggera III Bright Silver Wheels 19x9-2.5"lip, 19x10-4"lip - three piece forged.
Evosport Under-Drive Audiophile Pulley Kit
Custom Magnaflow High Flow Metallic CATS (#59926)
Innovative LM1 Wideband Air/Fuel ratio kit
Powerflex Front Thrust Arm and Sway Bar bushings
Cool Ride Thermal Reflective Panel under Air Plenum
Stoptech/SportStop slotted rotors with Axxis Deluxe pads
Bavauto Teflon Stainless steel brake lines
MB Quart Reference RUA213 Component Speakers, 12inch Kicker Subwoofer, RF AMP and XM Radio
Peake R5/FCX(II), Compaq PDA PocketPC OBDII realtime OBDpro Serial Scantool
Euro Clear headlights, 8K Xenon, Predator Angel Eyes Rings, Clear bra, Lamin-x, Euro Smoked tail lights
UFM IATS Relocator
Pro BEL RX65 Radar Detector direct wired and BLINDER Laser Jammer.
AFE Pro Dry S Intake with custom RAM air ducts
UMNITZA sink drain brake cooling grill
Carbon Fiber rear diffuser, front kidney grill and front Hamann look lip spoiler
Hamann DTM rear spoiler
Solargard 5% Tints, Ultimate Cup Holder, Full LED interior lights and exterior blinkers, Clear Bra
CNS Racing 3.62 Differential, suspension and sway bar upgrade
Royal Purple Synchromax.
CNS Racing Oil Separators/10W60
UUC RK6A-L knob
Alutec Strut Bar
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