Dyno question

Simmons-Racing · 03-06-2014, 07:49 AM

What gear should I use with a 135i?

Simmons

Stohlen · 03-06-2014, 08:23 AM

5th = 1:1 gear ratio.

Simmons-Racing · 03-06-2014, 08:53 AM

Quote:

Originally Posted by Stohlen

5th = 1:1 gear ratio.

OK thanks.

I am going today.

Simmons

Dmacc · 03-06-2014, 11:37 AM

Are you dct? If so 5th, if not 4th.

foghat · 03-06-2014, 11:46 AM

4th on a manual seems to be what most do on theses cars.

Simmons-Racing · 03-06-2014, 03:11 PM

It is a manual trans. We did the pull in 5th gear (160 mph)

We didn't have time to pull everything off to get a rpm signal, so I didn't get any TQ numbers.

It made 277 whp stock
and 338 whp with stage 1 Cobb tune.

Simmons

Allen@MOTIV · 03-06-2014, 03:15 PM

DCT cars should run in 5th gear and AT/MT cars should be done in 4th gear.

There isn't really an issue with dynoing a 6 speed trans in 5th gear but the wheel speeds of a 5th gear pull are VERY high and pose more of a safety risk.

mike@x-ph.com · 03-06-2014, 08:32 PM

Quote:

Originally Posted by Simmons-Racing

It is a manual trans. We did the pull in 5th gear (160 mph)

We didn't have time to pull everything off to get a rpm signal, so I didn't get any TQ numbers.

It made 277 whp stock
and 338 whp with stage 1 Cobb tune.

Simmons

60 whp gain !!
good stuff

foghat · 03-06-2014, 10:11 PM

What kind of dyno?

Simmons-Racing · 03-07-2014, 06:06 AM

Quote:

Originally Posted by foghat

What kind of dyno?

Dynojet

Simmons

MuNkY6913 · 03-11-2014, 08:12 PM

Quote:

Originally Posted by Simmons-Racing

It is a manual trans. We did the pull in 5th gear (160 mph)

We didn't have time to pull everything off to get a rpm signal, so I didn't get any TQ numbers.

It made 277 whp stock
and 338 whp with stage 1 Cobb tune.

Simmons

Do you only have the tune? Exhaust or intake mods?

Simmons-Racing · 03-11-2014, 09:43 PM

Quote:

Originally Posted by MuNkY6913

Do you only have the tune? Exhaust or intake mods?

Drop in filter, and Berk axle back.

Simmons

MuNkY6913 · 03-11-2014, 10:25 PM

Quote:

Originally Posted by Simmons-Racing

Quote:

Originally Posted by MuNkY6913

Do you only have the tune? Exhaust or intake mods?

Drop in filter, and Berk axle back.

Simmons

My first dyno runs were done in 4th. I'm really curious what difference 5th would make. With the injen intake and berk race axleback in the stock map of jb4 it was around 280 hp and 290tq. In map 5(auto tuning) it was 342 hp and 370 tq at 15psi. A year later same dyno with cat-less downpipes and giant intercooler and new charge pipe, in map 5 it was 385 hp and 427 tq at 16.5 psi. I had bad misfires then and since have sorted them out. Can't wait to see what she does this year. I really need to ask him if he'd be ok with the speeds involved with 5th gear. It was a dynomite dyno and that seems about close to the numbers you got. Interesting thought about 5th gear.

Stohlen · 03-12-2014, 09:50 AM

Quote:

Originally Posted by MuNkY6913

My first dyno runs were done in 4th. I'm really curious what difference 5th would make. With the injen intake and berk race axleback in the stock map of jb4 it was around 280 hp and 290tq. In map 5(auto tuning) it was 342 hp and 370 tq at 15psi. A year later same dyno with cat-less downpipes and giant intercooler and new charge pipe, in map 5 it was 385 hp and 427 tq at 16.5 psi. I had bad misfires then and since have sorted them out. Can't wait to see what she does this year. I really need to ask him if he'd be ok with the speeds involved with 5th gear. It was a dynomite dyno and that seems about close to the numbers you got. Interesting thought about 5th gear.

Assuming the calculation were done properly, the difference would be negligible.

MuNkY6913 · 03-12-2014, 11:24 AM

I was thinking about that this morning. Probably not worth the added danger of spinning the tires that fast.

Simmons-Racing · 03-12-2014, 11:30 AM

Quote:

Originally Posted by MuNkY6913

I was thinking about that this morning. Probably not worth the added danger of spinning the tires that fast.

I agree, next time we are going to use 4th.

Plus I had my snow tires on it

Simmons

MuNkY6913 · 03-12-2014, 11:32 AM

Quote:

Originally Posted by Simmons-Racing

Quote:

Originally Posted by MuNkY6913

I was thinking about that this morning. Probably not worth the added danger of spinning the tires that fast.

I agree, next time we are going to use 4th.

Plus I had my snow tires on it

Simmons

Hahaha. Marshmallows spinning at 150 mph. No thanks. Lol.

03-06-2014, 07:49 AM	#1
Simmons-Racing Private First Class 7 Rep 172 Posts Drives: 2010 135i Join Date: Jan 2014 Location: PA iTrader: (5)	Dyno question What gear should I use with a 135i? Simmons __________________ 2011 D/S Pro Solo National Champion 2014 Mustang GT 2013 BRZ for STX Sponsored by JSC Speed, Moto-East, Raceseng
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03-06-2014, 08:23 AM	#2
Stohlen Major 64 Rep 1,267 Posts Drives: AW 135i Join Date: Aug 2012 Location: Waterford, Mi iTrader: (2) Garage List 2008 BMW 135i [5.66]	5th = 1:1 gear ratio. __________________ Build thread: http://www.1addicts.com/forums/showthread.php?t=748935
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03-06-2014, 11:37 AM	#4
Dmacc Colonel 200 Rep 2,799 Posts Drives: 2011 BMW 1M Join Date: Mar 2010 Location: So Cal iTrader: (1)	Are you dct? If so 5th, if not 4th. __________________ thanks to MGallop
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03-06-2014, 11:46 AM	#5
foghat Captain 59 Rep 913 Posts Drives: 2008 135i Join Date: Jun 2009 Location: Great White North iTrader: (1)	4th on a manual seems to be what most do on theses cars.
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03-06-2014, 03:11 PM	#6
Simmons-Racing Private First Class 7 Rep 172 Posts Drives: 2010 135i Join Date: Jan 2014 Location: PA iTrader: (5)	It is a manual trans. We did the pull in 5th gear (160 mph) We didn't have time to pull everything off to get a rpm signal, so I didn't get any TQ numbers. It made 277 whp stock and 338 whp with stage 1 Cobb tune. Simmons __________________ 2011 D/S Pro Solo National Champion 2014 Mustang GT 2013 BRZ for STX Sponsored by JSC Speed, Moto-East, Raceseng
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03-06-2014, 03:15 PM	#7
Allen@MOTIV 38 Rep 634 Posts Drives: 135i Join Date: Jun 2013 Location: VA iTrader: (0)	DCT cars should run in 5th gear and AT/MT cars should be done in 4th gear. There isn't really an issue with dynoing a 6 speed trans in 5th gear but the wheel speeds of a 5th gear pull are VERY high and pose more of a safety risk.
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03-06-2014, 10:11 PM	#9
foghat Captain 59 Rep 913 Posts Drives: 2008 135i Join Date: Jun 2009 Location: Great White North iTrader: (1)	What kind of dyno?
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03-12-2014, 11:24 AM	#15
MuNkY6913 The Crowing 111 Rep 2,005 Posts Drives: BMW 135i Join Date: Feb 2010 Location: State College, PA iTrader: (4) Garage List 2009 135i [8.00]	I was thinking about that this morning. Probably not worth the added danger of spinning the tires that fast. __________________ 2009 135i : BMS JB4 G5 ISO,CXRacing FMIC Kit,Injen Cold Air Intake,Evolution Raceworks Charge Pipe,Walboro Inline Fuel Pump, E85 BMS Backend Flash w/ 60% E85,BMS Meth injection (trunkmount),BMS dual meth nozzles,Spec stage 2+ clutch w/ steel SWFW,BMS Catless Downpipes,Berk Tech Race Axleback
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