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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Clutch Upgrade? SPEC 2+ or 3+



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      09-26-2016, 12:21 AM   #1
sebasupreme
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Clutch Upgrade? SPEC 2+ or 3+

Hello, need to get a new clutch asap, my clutch is slipping, wondering if I should go with a SPEC Stage 2+ / Factory Flywheel or a SPEC Stage 3+ Factory Flywheel with the mods I have.

If someone could please explain the difference between a Stage 2+ vs 3+? and if I would be okay using a Factory Flywheel or should I upgrade to an Alum Flywheel?

Website I'm ordering the clutch from:

http://www.extremeturbosystems.com/S...utch-Kits.html

My mods:

Cobb V3 AccessPORT
BMS Stage 2 JB4 (G5 ISO) (Map 7) (E50)
Fuel It! Stage 2 Low Pressure Fuel Pump
Injen Cold Air Intake
Evolution Racewerkz Charge Pipe
VRSF Lower Charge Pipe Upgrade
VRSF 7” Front Mount Intercooler
VRSF Catless Downpipes

Soon to come:

Pure Stage 2 Turbo
Pure High Flow Inlet Pipe
Pure Diverter Upgrade
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      09-26-2016, 12:50 AM   #2
hassmaschine
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Wrong forum...
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      09-26-2016, 09:41 AM   #3
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We don't make enough power to entertain upgraded clutches....
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      09-26-2016, 10:36 AM   #4
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3+ its only a bit more expensive and holds alot more. Driveability is about the same or so I have read. I DD my 3+ and it's fine.
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      09-26-2016, 10:51 AM   #5
Jeff@TopGearSolutions
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Quote:
Originally Posted by sebasupreme View Post
Hello, need to get a new clutch asap, my clutch is slipping, wondering if I should go with a SPEC Stage 2+ / Factory Flywheel or a SPEC Stage 3+ Factory Flywheel with the mods I have.

If someone could please explain the difference between a Stage 2+ vs 3+? and if I would be okay using a Factory Flywheel or should I upgrade to an Alum Flywheel?

Website I'm ordering the clutch from:

http://www.extremeturbosystems.com/S...utch-Kits.html

My mods:

Cobb V3 AccessPORT
BMS Stage 2 JB4 (G5 ISO) (Map 7) (E50)
Fuel It! Stage 2 Low Pressure Fuel Pump
Injen Cold Air Intake
Evolution Racewerkz Charge Pipe
VRSF Lower Charge Pipe Upgrade
VRSF 7” Front Mount Intercooler
VRSF Catless Downpipes

Soon to come:

Pure Stage 2 Turbo
Pure High Flow Inlet Pipe
Pure Diverter Upgrade
Really depends on how much torque you're making and how all out you'll be running the stage 2 turbo's.

The Spec lineup is under-rated. So 545 torque for the 2+ is conservative from them.

If you plan on making over 600 TQ then 3+ would be the answer.

Also I wouldn't get the clutch from there, they don't even offer it with the Steel flywheel which is the one you want to have less flywheel rattle. The aluminum flywheel rattles like crazy and the factory flywheel can't handle the power. Looks like ETS needs to update their site to cater to this platforms needs.
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      09-26-2016, 11:00 AM   #6
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Quote:
Originally Posted by Jeff@TopGearSolutions View Post
Really depends on how much torque you're making and how all out you'll be running the stage 2 turbo's.

The Spec lineup is under-rated. So 545 torque for the 2+ is conservative from them.

If you plan on making over 600 TQ then 3+ would be the answer.

Also I wouldn't get the clutch from there, they don't even offer it with the Steel flywheel which is the one you want to have less flywheel rattle. The aluminum flywheel rattles like crazy and the factory flywheel can't handle the power. Looks like ETS needs to update their site to cater to this platforms needs.
it's also tq at the flywheel iirc. So the 2+ at 545 is more like ~480 ft lbs of tq at the wheels. Hence why the 3+ is the only one that makes sense with upgraded turbos imo. That being said people seem to have them hold past their rating how long who knows.
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      09-26-2016, 11:08 AM   #7
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Quote:
Originally Posted by Torgus View Post
it's also tq at the flywheel iirc. So the 2+ at 545 is more like ~480 ft lbs of tq at the wheels. Hence why the 3+ is the only one that makes sense with upgraded turbos imo. That being said people seem to have them hold past their rating how long who knows.
Correct and yea the rating is very under-rated.

Vishnu was one of the first to put the 2+ on their single turbo without a hitch. Put on 45K miles and dozens and dozens of launches at the track with slicks.

I'd always push for the 2+ unless you want to make gobs of torque down low, like over 600.
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      09-26-2016, 11:21 PM   #8
sebasupreme
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Quote:
Originally Posted by Jeff@TopGearSolutions View Post
Correct and yea the rating is very under-rated.

Vishnu was one of the first to put the 2+ on their single turbo without a hitch. Put on 45K miles and dozens and dozens of launches at the track with slicks.

I'd always push for the 2+ unless you want to make gobs of torque down low, like over 600.
I was honestly just looking to do a Pure Stage 2 with a Stage 2 LPFP with minimum E50 in the tank would the SPEC Stage 2+ SMFW be okay?
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      09-27-2016, 05:00 PM   #9
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Quote:
Originally Posted by sebasupreme View Post
I was honestly just looking to do a Pure Stage 2 with a Stage 2 LPFP with minimum E50 in the tank would the SPEC Stage 2+ SMFW be okay?
If you tune for under 600TQ, yes.
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      10-14-2016, 09:42 PM   #10
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Quote:
Originally Posted by Jeff@TopGearSolutions View Post
If you tune for under 600TQ, yes.
Idk how much I would tune for but I would try to max the turbo out, looks like I'm gonna go with the Stage 3+, Hows the feel of this clutch? I daily drive my car that's why I'm asking, is it soft like OEM just grabs harder? thanks
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      10-15-2016, 08:20 AM   #11
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Quote:
Originally Posted by sebasupreme View Post
Idk how much I would tune for but I would try to max the turbo out, looks like I'm gonna go with the Stage 3+, Hows the feel of this clutch? I daily drive my car that's why I'm asking, is it soft like OEM just grabs harder? thanks
It is heavier but you can easily DD it.
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      10-15-2016, 11:20 AM   #12
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Quote:
Originally Posted by sebasupreme View Post
Idk how much I would tune for but I would try to max the turbo out, looks like I'm gonna go with the Stage 3+, Hows the feel of this clutch? I daily drive my car that's why I'm asking, is it soft like OEM just grabs harder? thanks
Quote:
Originally Posted by Torgus View Post
It is heavier but you can easily DD it.
This!

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      10-15-2016, 05:57 PM   #13
sebasupreme
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Quote:
Originally Posted by Torgus View Post
It is heavier but you can easily DD it.
Quote:
Originally Posted by Jeff@TopGearSolutions View Post
This!

awesome guys thanks
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