Stage 2+ Shift Points

scalbert · 01-20-2006, 09:40 AM

I have seen this asked before so here it is. I did this last year with my Stage 2- but here it is revised (sort of) for Stage 2+ on 100 octane. I doubt the octane level would change it much if any as you are not looking at absolute numbers, just relative.

1 - 2 Redline (7k revs or close to it)
2 - 3 6250 RPM
3 - 4 5875 RPM

This is based on the following dyno chart for the relative numbers and the following data:

Dyno Plot

Pie4Foo · 01-20-2006, 09:58 AM

scalbert · 01-20-2006, 10:01 AM

Since the gearing advantage is reduced after the shift you need to calculate what the theoretical torque would be. I use the gearing reduction ratio to calculate the effective torque at the RPM point the revs would drop to after the shift.

Pie4Foo · 01-20-2006, 10:19 AM

Silver Dollar > Commerce.

Or so I hear.

scalbert · 01-20-2006, 10:30 AM

Commerce is certainly closer and a nicer track. But it does seem most run a little quicker at Silver Dollar. It is just that 2.5 hour drive that gets me. I can be at Atlanta Dragway in a little over an hour.

One nice thing about Silver Dollar is the lack of crowds.

Godfather | Jay · 01-20-2006, 10:47 AM

scalbert · 01-20-2006, 10:48 AM

Godfather | Jay · 01-20-2006, 10:57 AM

bertworks(dan@jhm) · 01-20-2006, 12:17 PM

im hoping my ride will be in the 12s in a couple weeks.

01-20-2006, 09:40 AM	#1
scalbert Junior Member Account #: 83037 Join Date: Oct 2004 Posts: 772	Stage 2+ Shift Points I have seen this asked before so here it is. I did this last year with my Stage 2- but here it is revised (sort of) for Stage 2+ on 100 octane. I doubt the octane level would change it much if any as you are not looking at absolute numbers, just relative. 1 - 2 Redline (7k revs or close to it) 2 - 3 6250 RPM 3 - 4 5875 RPM This is based on the following dyno chart for the relative numbers and the following data: Dyno Plot

01-20-2006, 09:58 AM	#2
Pie4Foo AudiWorld Senior Member Account #: 57452 Join Date: Jun 2003 Posts: 1,628	What does Effective Torque represent? Calculated/estimated figures based on the post-shift RPMs? __________________ Car for driving in circles: Lotus Exige Car for driving to the airport: AWE/GIAC Stage 3 S4 Car for the weekday: Hertz rental

01-20-2006, 10:01 AM	#3
scalbert Junior Member Account #: 83037 Join Date: Oct 2004 Posts: 772	The effective torque after the shift... Since the gearing advantage is reduced after the shift you need to calculate what the theoretical torque would be. I use the gearing reduction ratio to calculate the effective torque at the RPM point the revs would drop to after the shift.

01-20-2006, 10:19 AM	#4
Pie4Foo AudiWorld Senior Member Account #: 57452 Join Date: Jun 2003 Posts: 1,628	Nice! Now take it to the track and get 12's. :) Silver Dollar > Commerce. Or so I hear. __________________ Car for driving in circles: Lotus Exige Car for driving to the airport: AWE/GIAC Stage 3 S4 Car for the weekday: Hertz rental

01-20-2006, 10:30 AM	#5
scalbert Junior Member Account #: 83037 Join Date: Oct 2004 Posts: 772	I hope 12's are possible, they should be with the right conditions. Commerce is certainly closer and a nicer track. But it does seem most run a little quicker at Silver Dollar. It is just that 2.5 hour drive that gets me. I can be at Atlanta Dragway in a little over an hour. One nice thing about Silver Dollar is the lack of crowds.

01-20-2006, 10:47 AM	#6
Godfather \| Jay AudiWorld Super User Account #: 99226 Join Date: Oct 2005 Posts: 3,268	what chip? __________________ "Sleeper" - a B5 S4 Tribute "Stages: A Mod Addiction" Piano Black Beltline Trim Install * Clear corner DIY tips ER IC install pics/notes * DIY camera mount My stage 3+ mod list * More vids: 0-60, drag strip, etc

01-20-2006, 10:48 AM	#7
scalbert Junior Member Account #: 83037 Join Date: Oct 2004 Posts: 772	GIAC X

01-20-2006, 10:57 AM	#8
Godfather \| Jay AudiWorld Super User Account #: 99226 Join Date: Oct 2005 Posts: 3,268	thanks. BTW, nice post. __________________ "Sleeper" - a B5 S4 Tribute "Stages: A Mod Addiction" Piano Black Beltline Trim Install * Clear corner DIY tips ER IC install pics/notes * DIY camera mount My stage 3+ mod list * More vids: 0-60, drag strip, etc

01-20-2006, 12:17 PM	#9
bertworks(dan@jhm) AudiWorld Senior Member Account #: 99112 Join Date: Oct 2005 Posts: 1,140	great post : ), i usualy shift a little higher but im gonna try those numbers out im hoping my ride will be in the 12s in a couple weeks. __________________ 2000 s4 jhm/vast stg gt 2001.5 a6 4.2(in work)

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