exhaust mod drives range indicator crazy

danelonson · 08-06-2013, 06:36 AM

I have been running with the washers mod for the last 4 months and love the sound however, i have noticed that the mile range indicator under the led lights got allot less accurate. Before the washer mod it was somewhat accurate now it's way off. Sometimes goes down then up i can't rely on it anymore. My question is why does the exhaust leak cause this?

GaleForce · 08-06-2013, 07:00 AM

Because the new exhaust fumes affect your vision and judgement?

Sh0velMan · 08-06-2013, 07:04 AM

Quote:

Originally Posted by danelonson

I have been running with the washers mod for the last 4 months and love the sound however, i have noticed that the mile range indicator under the led lights got allot less accurate. Before the washer mod it was somewhat accurate now it's way off. Sometimes goes down then up i can't rely on it anymore. My question is why does the exhaust leak cause this?

It's not the exhaust, it's the driver.

Chuck33079 · 08-06-2013, 07:41 AM

Quote:

Originally Posted by danelonson

IMy question is why does the exhaust leak cause this?

It doesn't. You're putting your foot in it more to hear your exhaust leak and that's why your range display is going nuts. If you drive the way you used to, it will behave like it used to. Coorelation does not equal causation.

kenchan · 08-06-2013, 07:47 AM

Quote:

Originally Posted by danelonson

Sometimes goes down then up i can't rely on it anymore.

did you add fuel? cause then, it goes up usually... then comes down later.

danelonson · 08-06-2013, 08:55 AM

To be honest i feel like I'm driving the same and not faster to hear the exhaust. Can it be that since i lost bottom end power I'm giving more gas to compensate for the loss in torque?

Chuck33079 · 08-06-2013, 08:56 AM

No, there's no way the exhaust leak has any measurable effect on mpg.

Spikuh · 08-06-2013, 08:57 AM

Quote:

Originally Posted by danelonson

To be honest i feel like I'm driving the same and not faster to hear the exhaust. Can it be that since i lost bottom end power I'm giving more gas to compensate for the loss in torque?

It is purely your driving habits.

That is all.

Elan · 08-06-2013, 09:57 AM

When has that indicator ever been accurate? I recall jumping from 60ish down to 30 within 10 minutes.

kenchan · 08-06-2013, 10:10 AM

i can still see the scratch.

Spikuh · 08-06-2013, 10:40 AM

Quote:

Originally Posted by Elan

When has that indicator ever been accurate? I recall jumping from 60ish down to 30 within 10 minutes.

It is very accurate if you have good throttle control, but that's the thing....you have to have good control.

Elan · 08-06-2013, 12:16 PM

Quote:

Originally Posted by kenchan

i can still see the scratch.

Scratch? I don't know what you're talking about!

Quote:

Originally Posted by Spikuh

It is very accurate if you have good throttle control, but that's the thing....you have to have good control.

Really? When I turn off my car, it will say about 124 miles. A few hours later, turn it back on and its down to maybe 90. It just doesn't seem that accurate to me. I don't rely on it because gaugology-101 tells me not to trust it. I just fill up when I have about 3 dots left. Hasn't failed me yet!

Chuck33079 · 08-06-2013, 12:19 PM

Quote:

Originally Posted by Elan

Really? When I turn off my car, it will say about 124 miles. A few hours later, turn it back on and its down to maybe 90. It just doesn't seem that accurate to me.

Is the car cooling off enough to be back in the cold start enrichment part of the map? That would explain the difference.

I don't rely on mine since it's way off with larger than stock injectors. I just use the trip meter every time I fill up. When I was stock, though, the range indicator was fairly accurate.

Elan · 08-06-2013, 01:24 PM

Quote:

Originally Posted by Chuck33079

Is the car cooling off enough to be back in the cold start enrichment part of the map? That would explain the difference.

I don't rely on mine since it's way off with larger than stock injectors. I just use the trip meter every time I fill up. When I was stock, though, the range indicator was fairly accurate.

Hmm could be. I need to start using the trip meter too. Good idea.

Spikuh · 08-06-2013, 02:12 PM

Quote:

Originally Posted by Elan

Really? When I turn off my car, it will say about 124 miles. A few hours later, turn it back on and its down to maybe 90. It just doesn't seem that accurate to me. I don't rely on it because gaugology-101 tells me not to trust it. I just fill up when I have about 3 dots left. Hasn't failed me yet!

I have noticed the same thing, but it always jumps back up once I start moving again. I think it calculates the remaining distance based on driving habits of the last few minutes/miles or something to that effect. I have nothing to back that assertion up beyond what I have observed, but it seems to work along those lines. This seems to make it easy to manipulate by doing crazy throttle changes or a lot of stop/start, but for longer trips where you are moving at a more constant speed, it's pretty spot on.

08-06-2013, 06:36 AM	#1 (permalink)
danelonson Base Member Join Date: Apr 2012 Location: Florida Posts: 82 Drives: 12 370z 7AT Sport Rep Power: 14	exhaust mod drives range indicator crazy I have been running with the washers mod for the last 4 months and love the sound however, i have noticed that the mile range indicator under the led lights got allot less accurate. Before the washer mod it was somewhat accurate now it's way off. Sometimes goes down then up i can't rely on it anymore. My question is why does the exhaust leak cause this?

08-06-2013, 07:00 AM	#2 (permalink)
GaleForce A True Z Fanatic Join Date: Aug 2011 Location: Ontario, Canada Posts: 21,749 Drives: Varis Arising II Rep Power: 51865	Because the new exhaust fumes affect your vision and judgement? fuct, kenchan, JARblue and 2 others like this. __________________ >>>GaleForce's Build<<< >>>FaceBook @3GsCustoms<<<>>>Instagram @GaleForce370z<<< Varis Kamikaze-Z

08-06-2013, 08:56 AM	#7 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	No, there's no way the exhaust leak has any measurable effect on mpg. DEpointfive0 likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

08-06-2013, 09:57 AM	#9 (permalink)
Elan Track Member Join Date: May 2013 Location: Alpharetta, GA Posts: 906 Drives: Airplanes Rep Power: 17	When has that indicator ever been accurate? I recall jumping from 60ish down to 30 within 10 minutes. __________________ 2009 370Z NISMO #477 \| AAM Competition Short Tails \| AAM Competition HFCs \| K&N Typhoon CAI \| Kenwood DPX300U \| Rockford Fosgate PRIME R300-4 \| Rockford Fosgate Punch P165 \| Rockford Fosgate Punch P300-12 \| Polk Audio db1001 \| 15% Tints \| GTR Start Button \|

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08-06-2013, 08:55 AM	#6 (permalink)
danelonson Base Member Join Date: Apr 2012 Location: Florida Posts: 82 Drives: 12 370z 7AT Sport Rep Power: 14	To be honest i feel like I'm driving the same and not faster to hear the exhaust. Can it be that since i lost bottom end power I'm giving more gas to compensate for the loss in torque?

08-06-2013, 10:10 AM	#10 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	i can still see the scratch.