finally went to the circuit but...

nemex12 · 03-07-2010, 08:27 AM

after some thoughts finally i got the chance of going to the circuit with some other bmws and mini coopers but whn i got to a straight line a mini cooper s accelerated right until it catched up with me, stood by my side like half of a second and then left me behind, i felt so humiliated so i was wondering how should i accelerate to get the most of my engine, i mean i am no expert but i feel my car a little too slow and i guess its my fault as i dont know the proper revs to shift. by the way my car is a z4 si. thanks guys, oh and i almost forgot my car was just lovely on the curves

BMWI6 · 03-07-2010, 08:31 AM

wait you have a 3.0si? If so then a mini should not even touch you on a straight line. What do you mean you don't know when to shift? These cars love to rev high, so you shift maybe 100 rpms before redline when you want to go fast. I guess in the 3.0si its about 6,800rmps? good luck man

3002 tii · 03-07-2010, 10:21 AM

was the mcs supercharged? are you auto or stick? i know you mentioned shift but are you using the step or whatever it's called?

bosstones · 03-07-2010, 10:33 AM

Also, at what point in the straight did the mcs catch up to you? If was closer to coming out of a turn (if there was one) or decent curve, you could've come out in too high of a gear. If they were in a better gear and you were stuck lugging your engine....(?). Also, as Dubbedown mention, was the mcs stock or with a few goodies under the hood?

Either way, nothing to be humiliated over. You're a noob so you're going to make mistakes and won't be the fastest car on the track.

O-cha · 03-07-2010, 10:53 AM

Mini driver was just better, came out of the corner faster.

nemex12 · 03-07-2010, 01:33 PM

mine is a 2.5si = 218 horse power and 0-60 in like 6.4. my car is manual but as i said i dont know when to shift, im shifting like 2000 revs below redline because i dont feel like the car is still accelerating at that point but maybe i should stick in third until higher revs. anyone knows a good webpage where i could get more info about how to take a corner and get out with a good accelerating? ill take bmwi6 advice and shift when im ike 100 revs below red line. thanks guys i know im a noob but i want to be a little faster and some advice would come in handy

MVF4Rrider · 03-08-2010, 10:30 AM

What's the altitude at the track?

nemex12 · 03-12-2010, 05:43 PM

2500 mts over sea level

DarkstarZero · 03-12-2010, 06:57 PM

Make sure your air filter is clean or just swap it with a K&N

nemex12 · 03-13-2010, 11:38 PM

should be clean, mky car barely have 2000 miles on it

aerobod · 03-14-2010, 11:35 AM

Quote:

Originally Posted by nemex12

2500 mts over sea level

At that altitude, you will lose about 25% of your power compared with about 10% on the turbocharged MCS. You should be fairly close to the slightly lighter MCS if you use all of your rev range, though.

nemex12 · 03-16-2010, 11:57 PM

then Will I have to rev almost on red for every shift?or do i have to rev earlier on some shifts? thanks

aerobod · 03-20-2010, 10:57 PM

Quote:

Originally Posted by nemex12

then Will I have to rev almost on red for every shift?or do i have to rev earlier on some shifts? thanks

Close to the redline on each shift is normally the best technique on naturally aspirated BMW engines, but you may have to experiment.

RussRamz · 03-21-2010, 02:31 AM

Quote:

Originally Posted by aerobod

At that altitude, you will lose about 25% of your power compared with about 10% on the turbocharged MCS. You should be fairly close to the slightly lighter MCS if you use all of your rev range, though.

At 2500 feet, power loss on a normally aspirated engine is roughly 7.5% compared to sea level when using standard temperature (+15 C). The turbocharged car would lose nothing.

aerobod · 03-21-2010, 11:57 PM

Quote:

Originally Posted by RussRamz

At 2500 feet, power loss on a normally aspirated engine is roughly 7.5% compared to sea level when using standard temperature (+15 C). The turbocharged car would lose nothing.

That's correct, but the OP quoted 2500 metres (8200 feet), not 2500 feet.

At that altitude the MCS will not be able to fully compensate with a stock engine map. It will lose a lot less power than a NA engine, but still will not be making optimal power compared with sea level.

RussRamz · 03-22-2010, 12:00 PM

Quote:

Originally Posted by aerobod

That's correct, but the OP quoted 2500 metres (8200 feet), not 2500 feet.

Ahh OK, my mistake. I didn't catch the mts abreviation for meters. I thought he meant mountains.

http://www.abbreviations.com/bs.aspx?st=meters&SE=2

03-07-2010, 08:27 AM	#1
nemex12 Captain 114 Rep 973 Posts Drives: e60,z4 Join Date: Mar 2008 Location: florida iTrader: (1)	finally went to the circuit but... after some thoughts finally i got the chance of going to the circuit with some other bmws and mini coopers but whn i got to a straight line a mini cooper s accelerated right until it catched up with me, stood by my side like half of a second and then left me behind, i felt so humiliated so i was wondering how should i accelerate to get the most of my engine, i mean i am no expert but i feel my car a little too slow and i guess its my fault as i dont know the proper revs to shift. by the way my car is a z4 si. thanks guys, oh and i almost forgot my car was just lovely on the curves __________________ if you want perfection buy a mercedes, or marry an accountant
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03-07-2010, 08:31 AM	#2
BMWI6 Major 96 Rep 1,337 Posts Drives: 335is Join Date: Feb 2008 Location: Miami, Fl iTrader: (2)	wait you have a 3.0si? If so then a mini should not even touch you on a straight line. What do you mean you don't know when to shift? These cars love to rev high, so you shift maybe 100 rpms before redline when you want to go fast. I guess in the 3.0si its about 6,800rmps? good luck man __________________ If everything seems under control, then you aren't going fast enough"
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03-07-2010, 10:21 AM	#3
3002 tii Lieutenant General 2280 Rep 12,565 Posts Drives: Z4 M, X5, GX460 Join Date: Apr 2008 Location: CT iTrader: (99) Garage List F15 X5 xDrive35i [8.75] E86 Z4 M [10.00] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.50] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [9.20]	was the mcs supercharged? are you auto or stick? i know you mentioned shift but are you using the step or whatever it's called? __________________ Follow for latest mods
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03-07-2010, 10:33 AM	#4
bosstones Lieutenant Colonel 1154 Rep 1,543 Posts Drives: o_0 Join Date: Mar 2008 Location: Suburbia iTrader: (0)	Also, at what point in the straight did the mcs catch up to you? If was closer to coming out of a turn (if there was one) or decent curve, you could've come out in too high of a gear. If they were in a better gear and you were stuck lugging your engine....(?). Also, as Dubbedown mention, was the mcs stock or with a few goodies under the hood? Either way, nothing to be humiliated over. You're a noob so you're going to make mistakes and won't be the fastest car on the track. __________________ - Jeff bosstones' flickr
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03-07-2010, 10:53 AM	#5
O-cha Brigadier General 218 Rep 4,726 Posts Drives: Mcoupe Join Date: Oct 2007 Location: In front of you iTrader: (2)	Mini driver was just better, came out of the corner faster. __________________
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03-07-2010, 01:33 PM	#6
nemex12 Captain 114 Rep 973 Posts Drives: e60,z4 Join Date: Mar 2008 Location: florida iTrader: (1)	mine is a 2.5si = 218 horse power and 0-60 in like 6.4. my car is manual but as i said i dont know when to shift, im shifting like 2000 revs below redline because i dont feel like the car is still accelerating at that point but maybe i should stick in third until higher revs. anyone knows a good webpage where i could get more info about how to take a corner and get out with a good accelerating? ill take bmwi6 advice and shift when im ike 100 revs below red line. thanks guys i know im a noob but i want to be a little faster and some advice would come in handy __________________ if you want perfection buy a mercedes, or marry an accountant
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03-08-2010, 10:30 AM	#7
MVF4Rrider PCA, BMWCCA 102 Rep 2,058 Posts Drives: 997S, MV Agusta F4, E46 M3 Join Date: Apr 2008 Location: Las Vegas NV iTrader: (0)	What's the altitude at the track? __________________ '08 Carrera S 6MT Guards Red/Black ext leather, Carbon fiber pkg, sport exh, sport chrono +, PASM, Nav, Bose, 19" forged turbos, red tranny tunnel '07 MV Agusta F4 1000 R 1+1, Corse Red/Silver, RG3 race pipes and factory race ECU
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03-12-2010, 05:43 PM	#8
nemex12 Captain 114 Rep 973 Posts Drives: e60,z4 Join Date: Mar 2008 Location: florida iTrader: (1)	2500 mts over sea level __________________ if you want perfection buy a mercedes, or marry an accountant
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03-12-2010, 06:57 PM	#9
DarkstarZero Lieutenant Colonel 1014 Rep 1,720 Posts Drives: Daytona 95 M3, X7 M50, e92 M3, Join Date: Nov 2007 Location: Washington DC iTrader: (6)	Make sure your air filter is clean or just swap it with a K&N __________________ BMW CCA Track Instructor Join to win a M School Day at the Performance Center! Enter Referral ID: 420186
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03-13-2010, 11:38 PM	#10
nemex12 Captain 114 Rep 973 Posts Drives: e60,z4 Join Date: Mar 2008 Location: florida iTrader: (1)	should be clean, mky car barely have 2000 miles on it __________________ if you want perfection buy a mercedes, or marry an accountant
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03-16-2010, 11:57 PM	#12
nemex12 Captain 114 Rep 973 Posts Drives: e60,z4 Join Date: Mar 2008 Location: florida iTrader: (1)	then Will I have to rev almost on red for every shift?or do i have to rev earlier on some shifts? thanks __________________ if you want perfection buy a mercedes, or marry an accountant Last edited by nemex12; 03-17-2010 at 01:13 AM..
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