First dyno run ever, what gear?

cryptz · 09-23-2014, 11:52 AM

I am going to have my awd 435 (at 8 speed) dynoed on Friday. I have never been to a dyno. my intent is to verify the vr tune I have is operating at safe A/F ratio and also of course find out the power.

what gear should I pull? also anything else I should know going into it blind?

I thought you are supposed to do a pull in whatever gear is the closest to 1:1 not sure if that is right though because from what I am reading that is 6th gear which is higher then I would normally expect..

Krelle · 09-23-2014, 11:59 AM

Quote:

Originally Posted by cryptz

I am going to have my awd 435 (at 8 speed) dynoed on Friday. I have never been to a dyno. my intent is to verify the vr tune I have is operating at safe A/F ratio and also of course find out the power.

what gear should I pull? also anything else I should know going into it blind?

I thought you are supposed to do a pull in whatever gear is the closest to 1:1 not sure if that is right though because from what I am reading that is 6th gear which is higher then I would normally expect..

Spot on. It is 6th when you have the 8AT
/Krelle

brav0 · 09-23-2014, 01:21 PM

Can you post dyno graph with vr tune please? Also, your mods if any. I am considering that tune but would like to see the real gains

M-terkait · 09-23-2014, 02:08 PM

6th pulls till 160( 266kmph) which is too long and will make intake overheat...
i guess 5th or 4th are best. even tho they aren't 1:1

cryptz · 09-23-2014, 02:59 PM

ok so is it 6th 5th or 4th, and would that impact the final numbers?

i have a vrtune and afe intake, no other mods at the moment, but yes i will post.

Buckeyes · 09-23-2014, 03:32 PM

I heard 5th gear is the answer.

Jeff@TopGearSolutions · 09-23-2014, 03:45 PM

I would stay on the side of conservative and just do a 5th gear pull. You may find a bit more torque in a higher gear but it's really trivial stuff.

cryptz · 09-24-2014, 06:49 AM

what about a/f readings? I was shopping for downpipes yesterday and I see some offer extra bungs for wideband and egt gauges. without this extra bung can they read my a/f properly.

they phrased it like this:

"We do have an awd dyno jet. We also have a air fuel wideband monitor..."

not sure if it is possible that they hook to the obd2 port or just go in the tailpipe. otherwise I am thinking I would need an extra bung in an aftermarket downpipe.

09-23-2014, 11:52 AM	#1
cryptz Lieutenant 169 Rep 435 Posts Drives: 2015 m4 Join Date: Jun 2014 Location: pottstown pa iTrader: (1)	First dyno run ever, what gear? I am going to have my awd 435 (at 8 speed) dynoed on Friday. I have never been to a dyno. my intent is to verify the vr tune I have is operating at safe A/F ratio and also of course find out the power. what gear should I pull? also anything else I should know going into it blind? I thought you are supposed to do a pull in whatever gear is the closest to 1:1 not sure if that is right though because from what I am reading that is 6th gear which is higher then I would normally expect..
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09-23-2014, 01:21 PM	#3
brav0 New Member 0 Rep 8 Posts Drives: 2013 BMW 335i xDrive Join Date: Aug 2014 Location: Toronto, Canada iTrader: (0)	Can you post dyno graph with vr tune please? Also, your mods if any. I am considering that tune but would like to see the real gains
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09-23-2014, 02:08 PM	#4
M-terkait Major 209 Rep 1,252 Posts Drives: F30 335i 3/13 Join Date: Mar 2013 Location: Kuwait iTrader: (0)	6th pulls till 160( 266kmph) which is too long and will make intake overheat... i guess 5th or 4th are best. even tho they aren't 1:1 __________________ Docrace 6266
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09-23-2014, 02:59 PM	#5
cryptz Lieutenant 169 Rep 435 Posts Drives: 2015 m4 Join Date: Jun 2014 Location: pottstown pa iTrader: (1)	ok so is it 6th 5th or 4th, and would that impact the final numbers? i have a vrtune and afe intake, no other mods at the moment, but yes i will post.
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09-23-2014, 03:32 PM	#6
Buckeyes Captain 353 Rep 939 Posts Drives: 2013 335i M Sport Join Date: Jan 2013 Location: Atlanta iTrader: (2)	I heard 5th gear is the answer.
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09-23-2014, 03:45 PM	#7
Jeff@TopGearSolutions 3441 Rep 79,212 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	I would stay on the side of conservative and just do a 5th gear pull. You may find a bit more torque in a higher gear but it's really trivial stuff.
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09-24-2014, 06:49 AM	#8
cryptz Lieutenant 169 Rep 435 Posts Drives: 2015 m4 Join Date: Jun 2014 Location: pottstown pa iTrader: (1)	what about a/f readings? I was shopping for downpipes yesterday and I see some offer extra bungs for wideband and egt gauges. without this extra bung can they read my a/f properly. they phrased it like this: "We do have an awd dyno jet. We also have a air fuel wideband monitor..." not sure if it is possible that they hook to the obd2 port or just go in the tailpipe. otherwise I am thinking I would need an extra bung in an aftermarket downpipe.
	Appreciate 0 Quote