How to spend $2500 to get performance?

Tiago · Mon, Nov-24-2003, 05:11:20 PM

I'm waiting for BHS fan, evo pullies and GC gizmo, and i have more $2500 to spend on my m3. I only want to increase performance. What should i buy: exhaust system, GruppeM airbox... (i already have remaped ecu)

Ced · Mon, Nov-24-2003, 05:22:28 PM

Quote:

Originally posted by Tiago
I'm waiting for BHS fan, evo pullies and GC gizmo, and i have more $2500 to spend on my m3. I only want to increase performance. What should i buy: exhaust system, GruppeM airbox... (i already have remaped ecu)

what about the 3.91 Differential ratio gearing...

Naka · Mon, Nov-24-2003, 05:26:03 PM

Driving classes my friend. That's good for 3 seconds a lap.

Tiago · Mon, Nov-24-2003, 05:37:50 PM

3.91 Differential ratio gearing = less top end speed

ilitig8 · Mon, Nov-24-2003, 06:08:24 PM

Quote:

Originally posted by Tiago
3.91 Differential ratio gearing = less top end speed

Wrong...unless you have found the magic HP pill that lets your M3 reach the magic 201 mph.

Vandy

Tiago · Mon, Nov-24-2003, 06:33:24 PM

Quote:

Wrong...unless you have found the magic HP pill that lets your M3 reach the magic 201 mph.

This is not my car but the owner is my friend. It have SS system without cat's, sport camshafts, and remaped ecu in dyno by SKN engineer. He spend $3000 only for the remaping of the ecu.

gr8shandini · Mon, Nov-24-2003, 06:51:19 PM

Actually, 310 KPH is only 192 mph. add in the 10% speedo error and your friend's doing about 175. You need about 500 hp or more to hit 200 even in very slick sports cars such as a F575 or 'Vette. The M3 is even draggier, so I don't ever think you'll see one going 200 with an S54.

Tiago · Mon, Nov-24-2003, 06:59:28 PM

... in 6 gear with the 3.91 Differential ratio gearing?

gr8shandini · Mon, Nov-24-2003, 08:36:01 PM

could be wrong, but I think it's about 185 or so with the 3.91 rear end. I think that's plenty fast for me if you had the ponies to back it up, but I wouldn't get it because I have to do alot of commuting and wouldn't like the increased RPM at highway cruise speeds.

Ced · Mon, Nov-24-2003, 08:47:28 PM

Quote:

Originally posted by gr8shandini
could be wrong, but I think it's about 185 or so with the 3.91 rear end. I think that's plenty fast for me if you had the ponies to back it up, but I wouldn't get it because I have to do alot of commuting and wouldn't like the increased RPM at highway cruise speeds.

close... mph= (rpm *26.03)/(gear ratio * diff ratio *336)

(8000*26.03)/(0.83*3.91*336)=190.97

Mon, Nov-24-2003, 05:11:20 PM	#1
Tiago Registered User Join Date: Oct 2003 Age: 31 Posts: 1,330 Reputation: 0 Location: Europe	How to spend $2500 to get performance? I'm waiting for BHS fan, evo pullies and GC gizmo, and i have more $2500 to spend on my m3. I only want to increase performance. What should i buy: exhaust system, GruppeM airbox... (i already have remaped ecu)

Mon, Nov-24-2003, 05:37:50 PM	#4
Tiago Registered User Join Date: Oct 2003 Age: 31 Posts: 1,330 Reputation: 0 Location: Europe	I don't want to lose top end speed. 3.91 Differential ratio gearing = less top end speed

Mon, Nov-24-2003, 06:59:28 PM	#8
Tiago Registered User Join Date: Oct 2003 Age: 31 Posts: 1,330 Reputation: 0 Location: Europe	and which's the speed at 8000rmp ... ... in 6 gear with the 3.91 Differential ratio gearing?

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
2500 to spend...	Marke36	E36 M3 (1992-1999)	12	Mon, Feb-18-2008 06:31:32 AM
How to spend the first $10k on performance mods?	berner	E46 M3 (2001-2006)	45	Tue, Dec-11-2007 09:20:29 PM
Best performance mods?...Looking to spend 5K	USMC///m3	E46 M3 (2001-2006)	60	Mon, Dec-04-2006 10:29:29 AM
Want to spend $2500 in perf. upgrades. Where do i start?	mikea02m3	E46 M3 (2001-2006)	23	Wed, Feb-22-2006 08:21:09 AM
2k to spend on a performance mod???	Straighte8	E46 M3 (2001-2006)	12	Tue, Oct-26-2004 04:16:56 PM

Mon, Nov-24-2003, 05:26:03 PM	#3
Naka Registered User Join Date: Dec 2001 Posts: 208 Reputation: 0 Location: Louisville	Driving classes my friend. That's good for 3 seconds a lap.

Mon, Nov-24-2003, 06:51:19 PM	#7
gr8shandini Registered User Join Date: Aug 2002 Posts: 2,106 Reputation: 0 Location: ABQ	Actually, 310 KPH is only 192 mph. add in the 10% speedo error and your friend's doing about 175. You need about 500 hp or more to hit 200 even in very slick sports cars such as a F575 or 'Vette. The M3 is even draggier, so I don't ever think you'll see one going 200 with an S54.

Mon, Nov-24-2003, 08:36:01 PM	#9
gr8shandini Registered User Join Date: Aug 2002 Posts: 2,106 Reputation: 0 Location: ABQ	could be wrong, but I think it's about 185 or so with the 3.91 rear end. I think that's plenty fast for me if you had the ponies to back it up, but I wouldn't get it because I have to do alot of commuting and wouldn't like the increased RPM at highway cruise speeds.