Sometimes feels like there's no pull at all at higher RPMs - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)

radiantm3 · 03-20-2009, 12:41 PM

Is this common for turbo cars? It might just be me.

If I accelerate hard right from the start, the car pulls very hard all the way into the upper rpms. You can feel it die down up top, but it's pretty linear. But I noticed when I drive normally and then push the gas down hard at around 3000-4000rpms in 2nd gear, It's like there's no torque at all. It feels random sometimes. And I noticed the same thing in both my 135 and 335 so I don't think there's something wrong with both cars. The 135i has the Dinan stage 2 as well. Thoughts? Enlighten me?

My guess would be that my body is associating the gobs of torque in the low end with accelerating fast so when I don't feel it, the car feels slow.

peppebmw · 03-20-2009, 01:00 PM

I have experienced this as well. I thought something was wrong with my car. Feels a little better with JB+.

gnpower · 03-20-2009, 01:01 PM

Plenty of pull with mine. Maybe you are getting used to the power?

Judge · 03-20-2009, 01:13 PM

I run a stock 135i and find it delivers the most power when downshifting from 4th to 3rd or 3rd to 2nd. Of course the downshifting sends the rpms into the stratosphere but that is the point, right?

Addict...Nah Im A Junkie! · 03-20-2009, 02:21 PM

Do you have your traction control turned on or off? If off, fully off or just the 1 second push off?

radiantm3 · 03-20-2009, 02:46 PM

Quote:

Originally Posted by Addict...Nah Im A Junkie!

Do you have your traction control turned on or off? If off, fully off or just the 1 second push off?

It's on, but I don't think it's a TC issue. Wouldn't I see the light flash? And I don't feel any cut in power.

SpeedballTrix · 03-21-2009, 11:32 AM

Quote:

Originally Posted by gnpower

Plenty of pull with mine. Maybe you are getting used to the power?

QFT

When I first got my 135 I almost never pushed it because it felt so fast.
Within a month or two I found myself struggling not to throw mods at it because I can squeeze every ounce of acceleration out of her and still want more. The 135 just eats up speed and asks for more.
I'm not saying the car isn't fast, I'm just saying it's so easy to drive fast (unlike a 350z or S2000, in my experience) that you get used to it very quickly and find yourself confident to find the edge and dance on it.

BForbes · 03-21-2009, 11:42 AM

You folks got really use to that power quickly!

M3R1 · 03-21-2009, 11:57 AM

Quote:

Originally Posted by gnpower

Plenty of pull with mine. Maybe you are getting used to the power?

arok · 03-21-2009, 11:59 AM

well here's why you guys feel it "losing out" at the top end
From BMW:
Nominal output hp/rpm 300/5800
Max. torque lb-ft/rpm 300/1400-5000

our max torque drops off at 5k... so you no longer feel the same "pull"... I've read somewhere that the track guys here shift before redline by a few hundred RPM b/c that puts you in the best part of the powerband of the next gear...

for me, the car is fast enough... i can break speed limits before I can look for cops lol...

BForbes · 03-21-2009, 12:39 PM

^^Makes sense. I wonder if that was done for engine longetivy and reliablity. Or, it could've been done to save the //M cars embarassment. :-)

radiantm3 · 03-21-2009, 04:31 PM

Quote:

Originally Posted by SpeedballTrix

QFT

When I first got my 135 I almost never pushed it because it felt so fast.
Within a month or two I found myself struggling not to throw mods at it because I can squeeze every ounce of acceleration out of her and still want more. The 135 just eats up speed and asks for more.
I'm not saying the car isn't fast, I'm just saying it's so easy to drive fast (unlike a 350z or S2000, in my experience) that you get used to it very quickly and find yourself confident to find the edge and dance on it.

Yea I could just be used to it. It could also be the fact that the Dinan upgrade is tuned to reduce boost as you get into the higher RPMs. I'm not saying the car doesn't feel fast. There's just a significant difference between the lower RPMs and the higher in the first couple gears. All that torque in the lower RPMs feels like it disappears and the car "feels" slow after that point.

arok · 03-21-2009, 04:45 PM

Quote:

Originally Posted by BForbes

^^Makes sense. I wonder if that was done for engine longetivy and reliablity. Or, it could've been done to save the //M cars embarassment. :-)

I think it was for daily drive-ability. torque down low makes it easy to drive around in traffic, stop&go and etc...

white911 · 03-21-2009, 05:52 PM

Read the Dinan site, it is designed to reduce boost at higher RPMs. Any responsible tuner should approach their program with some degree of caution. Some add a tune on top of the Dinan to defeat that longevity feature. It seems that the higher boost near red line raise cylinder temperatures beyond acceptable limits. On the track the car has plenty of pull without approaching redline. There is really no need to run it up to redline. When I get a chance I will take some data (stock configuration) comparing segment times. Right now my focus is on the Porsche, so it could be a while.

Mega Man · 03-21-2009, 06:45 PM

I agree with the OP, and majority of the rest of the posts. I thought maybe I was getting used to it. I remember the HP/TQ graphs from the brochure; the sudden drop off.

Whatever the case, two things are certain: a stock 135i doesn't feel as fast months after you've bought it from the first time you "punched it," and there is a sudden loss of torque a little after 5k RPM.

imported_mega · 03-21-2009, 07:14 PM

jb3 will fix it

it's the tune that's doing it

infinitekid2002 · 03-22-2009, 12:35 AM

one word...Procede

rcracer_tx · 03-22-2009, 12:48 AM

Quote:

Originally Posted by imported_mega

jb3 will fix it

it's the tune that's doing it

More power= more fun

03-20-2009, 12:41 PM	#1
radiantm3 AWD...training wheels for RWD Drives: 11 E92 M3, 13 F25 X3 xdrive35i Join Date: Sep 2008 Location: Fremont, CA Posts: 3,140 iTrader: (5) Garage List 2011 E92 M3 [4.73] 2013 BMW X3 xdrive35 [4.50]	Sometimes feels like there's no pull at all at higher RPMs Is this common for turbo cars? It might just be me. If I accelerate hard right from the start, the car pulls very hard all the way into the upper rpms. You can feel it die down up top, but it's pretty linear. But I noticed when I drive normally and then push the gas down hard at around 3000-4000rpms in 2nd gear, It's like there's no torque at all. It feels random sometimes. And I noticed the same thing in both my 135 and 335 so I don't think there's something wrong with both cars. The 135i has the Dinan stage 2 as well. Thoughts? Enlighten me? My guess would be that my body is associating the gobs of torque in the low end with accelerating fast so when I don't feel it, the car feels slow. __________________ 2011.5 E92 M3 6MT / 45,000+ miles / 3400lbs with no driver, half tank / M3 GTS Aero, Rear Seat Delete, Half Cage • Schroth 6 Point Harness • Recaro Profi • 18" BBS FI / 18" TE37SL Black Edition • Ohlins RT • Vorshlag Camber Plates • Brembo 380GT • Endless Pads • Akrapovic Evo • RD Sport Sways • ESS Tune • Supercharger Delete (1:42 @ Laguna Seca, 2:09 @ Thunderhill, 1:56 @ Infineon)
	Tweet

03-20-2009, 01:00 PM	#2
peppebmw Lieutenant Drives: 2010 Audi S4 - Imola Yellow Join Date: Nov 2007 Location: middle of CT Posts: 406 iTrader: (1)	I have experienced this as well. I thought something was wrong with my car. Feels a little better with JB+. __________________

03-20-2009, 01:01 PM	#3
gnpower Lieutenant Drives: BMW ///M Sport 135i Join Date: May 2008 Location: Red Sox Nation Posts: 475 iTrader: (0)	Plenty of pull with mine. Maybe you are getting used to the power? __________________ ///M 135i

03-20-2009, 02:21 PM	#5
Addict...Nah Im A Junkie! Captain Drives: 09 135i, 98 M rdstr Join Date: Sep 2008 Location: NY Posts: 786 iTrader: (0)	Do you have your traction control turned on or off? If off, fully off or just the 1 second push off? __________________ '09 135i 6MT : Space Grey/Black ette : Cold Weather Package : Sport Package : Glacier Silver Aluminum Trim : iPod and USB : Nav : HD radio : Premium hi-fi system

03-21-2009, 11:42 AM	#8
BForbes Moderator Drives: BSM 135i/AW E90 M3 Join Date: Feb 2007 Location: Orlando, FL Posts: 4,233 iTrader: (0)	You folks got really use to that power quickly! __________________ - 04 Honda S2000(gone)

03-20-2009, 01:13 PM	#4
Judge First Lieutenant Drives: 135i Join Date: Dec 2008 Location: FL Posts: 370 iTrader: (0)	I run a stock 135i and find it delivers the most power when downshifting from 4th to 3rd or 3rd to 2nd. Of course the downshifting sends the rpms into the stratosphere but that is the point, right?

03-21-2009, 11:59 AM	#10
arok Captain Drives: BMW 135i Join Date: Jan 2009 Location: San Mateo, CA Posts: 957 iTrader: (1)	well here's why you guys feel it "losing out" at the top end From BMW: Nominal output hp/rpm 300/5800 Max. torque lb-ft/rpm 300/1400-5000 our max torque drops off at 5k... so you no longer feel the same "pull"... I've read somewhere that the track guys here shift before redline by a few hundred RPM b/c that puts you in the best part of the powerband of the next gear... for me, the car is fast enough... i can break speed limits before I can look for cops lol... __________________

03-21-2009, 12:39 PM	#11
BForbes Moderator Drives: BSM 135i/AW E90 M3 Join Date: Feb 2007 Location: Orlando, FL Posts: 4,233 iTrader: (0)	^^Makes sense. I wonder if that was done for engine longetivy and reliablity. Or, it could've been done to save the //M cars embarassment. :-) __________________ - 04 Honda S2000(gone)

03-21-2009, 05:52 PM	#14
white911 First Lieutenant Drives: 135I - white/coral red - sport Join Date: Dec 2007 Location: California, MD Posts: 352 iTrader: (0)	Read the Dinan site, it is designed to reduce boost at higher RPMs. Any responsible tuner should approach their program with some degree of caution. Some add a tune on top of the Dinan to defeat that longevity feature. It seems that the higher boost near red line raise cylinder temperatures beyond acceptable limits. On the track the car has plenty of pull without approaching redline. There is really no need to run it up to redline. When I get a chance I will take some data (stock configuration) comparing segment times. Right now my focus is on the Porsche, so it could be a while. __________________ Alan 08 135I (AW/Coral Red - delivered 3/15/08 -- 13 Audi S4, 83 SC (trackster), 90 C2 (Sally's Carrera), 04 Avalanche Blingmobile

03-21-2009, 06:45 PM	#15
Mega Man エアーマンが倒せない Drives: 2009 135i Join Date: Oct 2008 Location: SoCal Posts: 1,934 iTrader: (6) Garage List 2009 135i [0.00]	I agree with the OP, and majority of the rest of the posts. I thought maybe I was getting used to it. I remember the HP/TQ graphs from the brochure; the sudden drop off. Whatever the case, two things are certain: a stock 135i doesn't feel as fast months after you've bought it from the first time you "punched it," and there is a sudden loss of torque a little after 5k RPM. __________________ 1ADDICT \| Black Shadowline Grills \| KW V2 \| CP-E Tow-Hook Plate \| CP-E Catback Exhaust \| Tow-Hook \| Evolution Racewerks Intercooler \| ER Charge Pipe \| HKS SQV IV \| ER Intercooler Shroud \| BMS Oil Catch Can \| COBB Access Port \|

03-21-2009, 07:14 PM	#16
imported_mega Lieutenant Colonel Drives: various bmw's Join Date: Jul 2007 Location: neverland Posts: 1,983 iTrader: (0)	jb3 will fix it it's the tune that's doing it __________________ You only need two tools in life - WD-40 and Duct Tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape. Gone but not forgotten.. 1974 2002, 1987 325ic, 1987 325is 1995 M3, 2001 X5, 2007 MCS R56

03-22-2009, 12:35 AM	#17
infinitekid2002 Creepin while ya sleepin Drives: Like a Bat out of Hell Join Date: Nov 2007 Location: City of Angels Posts: 3,189 iTrader: (4) Garage List 2008 135i [3.59]	one word...Procede __________________

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search