Dyno Question

The Nerd · 04-08-2015, 11:32 AM

Call me an alarmist.....but I'm having my car dynoed again on Friday, and I wanted to know how exactly they connect to your car (electronically speaking) when they get readings such as air/fuel, etc, etc. I ask because I have both the MPPK and now the Dinan tune, and I don't want ANYTHING screwing with the electronics of my car now that I have both a flash and piggyback tune working in tandem.

I know tuned cars are dynoed all the time, so I'm sure its a non-issue. But can someone put me at ease regarding the way they hook up to the car electronically to do the pulls?

Thanks!

Mike_L · 04-08-2015, 11:58 AM

Depends how they're measuring air fuel. Most dyno shops will just stick a probe in the tailpipe and not connect to the car at all. RPM measurements can either be done under the hood through the coil wires (sorta like the old inductive pickup on the plug wires) or through the OBD2 plug.

BEAR-AvHistory · 04-08-2015, 12:40 PM

Take an hex key or whatever fits the plastic engine cover hold down bolts to loosen it. Inductive pickup needs access to the coil wires.

If an auto its a good plan to block the throttle pedal to prevent kick down. Find out what gear 1:1 is & run the test in that gear. Be sure all the nannies are switched off. Auto run in full sport mode, sport+ with paddle shifting.

Damon44 · 04-08-2015, 12:54 PM

Quote:

Originally Posted by The Nerd

Call me an alarmist.....but I'm having my car dynoed again on Friday, and I wanted to know how exactly they connect to your car (electronically speaking) when they get readings such as air/fuel, etc, etc. I ask because I have both the MPPK and now the Dinan tune, and I don't want ANYTHING screwing with the electronics of my car now that I have both a flash and piggyback tune working in tandem.

I know tuned cars are dynoed all the time, so I'm sure its a non-issue. But can someone put me at ease regarding the way they hook up to the car electronically to do the pulls?

Thanks!

You and I have the same engine and identical tunes. I am eagerly anticipating the results of your assessment.
Quite a big investment in our N55s.
Every time I ask the Dinan specialist just how much horsepower I have, they tell me to just enjoy the car.
Not a very precise response.
Is it costing you a lot for them to run the evaluation?

The Nerd · 04-08-2015, 01:02 PM

Quote:

Originally Posted by Damon44

Quote:

Originally Posted by The Nerd

Call me an alarmist.....but I'm having my car dynoed again on Friday, and I wanted to know how exactly they connect to your car (electronically speaking) when they get readings such as air/fuel, etc, etc. I ask because I have both the MPPK and now the Dinan tune, and I don't want ANYTHING screwing with the electronics of my car now that I have both a flash and piggyback tune working in tandem.

I know tuned cars are dynoed all the time, so I'm sure its a non-issue. But can someone put me at ease regarding the way they hook up to the car electronically to do the pulls?

Thanks!

You and I have the same engine and identical tunes. I am eagerly anticipating the results of your assessment.
Quite a big investment in our N55s.
Every time I ask the Dinan specialist just how much horsepower I have, they tell me to just enjoy the car.
Not a very precise response.
Is it costing you a lot for them to run the evaluation?

No, about $120. I think the car feels more aggressive (then again, it's been horrendous weather until recently and I haven't really opened up much prior to Dinan install....my point is, my car would have felt fast no matter what after 4 months of feathering the throttle).

I'll be sure to fill you in.

The Nerd · 04-08-2015, 09:46 PM

So is there ANY danger of having my flash or Dinan piggyback tune "erased" or altered if someone at the dyno facility hooks something up wrong?

Mike_L · 04-08-2015, 10:43 PM

Absolutely none. They can't write anything to any computer. Only way you'd lose anything would be if they fried the entire computer, and in that case you have a lot more to worry about than just the tune or Dinantronics.

The Nerd · 04-09-2015, 05:22 PM

Quote:

Originally Posted by BEAR-AvHistory

Take an hex key or whatever fits the plastic engine cover hold down bolts to loosen it. Inductive pickup needs access to the coil wires.

If an auto its a good plan to block the throttle pedal to prevent kick down. Find out what gear 1:1 is & run the test in that gear. Be sure all the nannies are switched off. Auto run in full sport mode, sport+ with paddle shifting.

So in the 8AT, what is the ideal 1:1 gear for a dyno pull?

Thescout13 · 04-09-2015, 05:57 PM

Quote:

Originally Posted by The Nerd

Quote:

Originally Posted by BEAR-AvHistory

Take an hex key or whatever fits the plastic engine cover hold down bolts to loosen it. Inductive pickup needs access to the coil wires.

If an auto its a good plan to block the throttle pedal to prevent kick down. Find out what gear 1:1 is & run the test in that gear. Be sure all the nannies are switched off. Auto run in full sport mode, sport+ with paddle shifting.

So in the 8AT, what is the ideal 1:1 gear for a dyno pull?

I'm almost positive it's 6th gear but 5th seems to be what everyone does...

FC4 · 04-09-2015, 06:00 PM

An AT will hit the speed limiter before redline in 6th gear.

Thescout13 · 04-09-2015, 06:24 PM

Quote:

Originally Posted by FC4

An AT will hit the speed limiter before redline in 6th gear.

It will hit 155 in 6th? Dayum! Go us

Mike_L · 04-09-2015, 06:40 PM

Quote:

Originally Posted by Thescout13

It will hit 155 in 6th? Dayum! Go us

If you didn't get M-Sport and performance tires, the car is limited to 130.

Thescout13 · 04-09-2015, 06:49 PM

Quote:

Originally Posted by Mike_L

Quote:

Originally Posted by Thescout13

It will hit 155 in 6th? Dayum! Go us

If you didn't get M-Sport and performance tires, the car is limited to 130.

Yeh I knew that. I'm guessing you were referring to that. But if you have the higher limiter than do it in 6th

rajahfl · 04-14-2015, 08:01 PM

I am also interested in the results of the The Nerd's tune. I have a 2014 335i with MPPK and MPE. I'm considering getting the Dinantronics Stage 1 ECU upgrade that should take me up to 364-hp & 430-ft/lb of torque with my MPPK.

But, I talked to a guy at Dinan this morning and he told me that the Dinantronics Stage 2 ECU upgrade for the F30 335i is imminent, like less than a week away. He wouldn't confirm but he said with the right parts we could be looking at 380-hp & 460-ft/lb of torque with MPPK.

04-08-2015, 11:32 AM	#1
The Nerd Major 428 Rep 1,108 Posts Drives: 22 M3 Comp xDrive Join Date: Apr 2013 Location: Ohio iTrader: (0)	Dyno Question Call me an alarmist.....but I'm having my car dynoed again on Friday, and I wanted to know how exactly they connect to your car (electronically speaking) when they get readings such as air/fuel, etc, etc. I ask because I have both the MPPK and now the Dinan tune, and I don't want ANYTHING screwing with the electronics of my car now that I have both a flash and piggyback tune working in tandem. I know tuned cars are dynoed all the time, so I'm sure its a non-issue. But can someone put me at ease regarding the way they hook up to the car electronically to do the pulls? Thanks!
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04-08-2015, 11:58 AM	#2
Mike_L Banned 284 Rep 1,961 Posts Drives: 2015 335xi GT M-Sport MPPK Join Date: Jun 2013 Location: New York City iTrader: (2)	Depends how they're measuring air fuel. Most dyno shops will just stick a probe in the tailpipe and not connect to the car at all. RPM measurements can either be done under the hood through the coil wires (sorta like the old inductive pickup on the plug wires) or through the OBD2 plug.
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04-08-2015, 12:40 PM	#3
BEAR-AvHistory 2020 Z4 M40i - 2022 M4C Convt 3129 Rep 5,264 Posts Drives: 2020 Z4 M40i - 2022 M4C Convrt Join Date: Jun 2011 Location: Raleigh, NC - OIB, NC iTrader: (0) Garage List 1965 COBRA (FFR rep ... [8.57] 2023 Jeep Wrangler ... [9.50] 2009 Yamaha V-Star [0.00] Cars 2-BMW, 2-FORD, ... [0.00] 2023 Ford Expeditio ... [0.00] 2020 Z4 M40i [10.00] 2022 BMW M4C [7.25] 1998 FORD Ranger 4X4 [0.00]	Take an hex key or whatever fits the plastic engine cover hold down bolts to loosen it. Inductive pickup needs access to the coil wires. If an auto its a good plan to block the throttle pedal to prevent kick down. Find out what gear 1:1 is & run the test in that gear. Be sure all the nannies are switched off. Auto run in full sport mode, sport+ with paddle shifting. __________________ Kevin Dravit Gray, Black Leather, Moonlight Roof, Red Calipers 2022 M4C - 2020 Z4 M40i - 2023 FORD Expedition XLT Max 4X4 400BHP - 2009 V-Star - 1998 Ranger 4X4 5MT - 1965 Cobra (R) 5MT - 2023 Jeep Wrangler Sport S 6MT
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04-08-2015, 09:46 PM	#6
The Nerd Major 428 Rep 1,108 Posts Drives: 22 M3 Comp xDrive Join Date: Apr 2013 Location: Ohio iTrader: (0)	So is there ANY danger of having my flash or Dinan piggyback tune "erased" or altered if someone at the dyno facility hooks something up wrong?
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04-08-2015, 10:43 PM	#7
Mike_L Banned 284 Rep 1,961 Posts Drives: 2015 335xi GT M-Sport MPPK Join Date: Jun 2013 Location: New York City iTrader: (2)	Absolutely none. They can't write anything to any computer. Only way you'd lose anything would be if they fried the entire computer, and in that case you have a lot more to worry about than just the tune or Dinantronics.
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04-09-2015, 06:00 PM	#10
FC4 Brigadier General 2681 Rep 3,406 Posts Drives: Yes Join Date: May 2014 Location: US iTrader: (0)	An AT will hit the speed limiter before redline in 6th gear.
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04-14-2015, 08:01 PM	#14
rajahfl Private 39 Rep 60 Posts Drives: 2020 M8 GC Join Date: Mar 2015 Location: Florida iTrader: (0)	I am also interested in the results of the The Nerd's tune. I have a 2014 335i with MPPK and MPE. I'm considering getting the Dinantronics Stage 1 ECU upgrade that should take me up to 364-hp & 430-ft/lb of torque with my MPPK. But, I talked to a guy at Dinan this morning and he told me that the Dinantronics Stage 2 ECU upgrade for the F30 335i is imminent, like less than a week away. He wouldn't confirm but he said with the right parts we could be looking at 380-hp & 460-ft/lb of torque with MPPK.
	Appreciate 0 Quote