exhaust mod drives range indicator crazy

Chuck33079 · 08-06-2013, 03:13 PM

Quote:

Originally Posted by Spikuh

I think it calculates the remaining distance based on driving habits of the last few minutes/miles or something to that effect.

I'm sure this is exactly what's happening.

SouthArk370Z · 08-06-2013, 03:48 PM

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?

Unless you put a bunch of washers in there it shouldn't make that much difference. My money is on the guys that are saying your driving habits changed.

I tried the washer trick but it was blowing hot gas on the wiring going to the wheel speed sensors (especially on the left side) so I took the washers out. Had some tees fabricated and installed at the muffler inlets. Also installed some turn downs on the branches (pointed slightly toward the front of the car). The hole for the tee branch is ~3/4" and works well to give me some feedback in the cabin without being too loud outside.

Chuck33079 · 08-06-2013, 03:52 PM

Quote:

Originally Posted by SouthArk370Z

I tried the washer trick but it was blowing hot gas on the wiring going to the wheel speed sensors (especially on the left side)

This couldn't possibly have happened. You're mistaken.

I brought that very point up in one of the threads about the washer leak and one member ranted and raved at me at length that this was a nonissue, it couldn't happen, nothing bad could happen and I was being ridiculous.

SouthArk370Z · 08-06-2013, 04:14 PM

Quote:

Originally Posted by Chuck33079

This couldn't possibly have happened. You're mistaken.

I brought that very point up in one of the threads about the washer leak and one member ranted and raved at me at length that this was a nonissue, it couldn't happen, nothing bad could happen and I was being ridiculous.

I suppose it would have been easy enough to fix (small metal deflectors bolted to the flanges should do the trick) but I decided to go with a more permanent arrangement.

This is not something I would try on a classic car; too much CO.

fuct · 08-06-2013, 05:18 PM

you guys doing the washer mod are missing the intake side as well. you need to go poke a 2 inch hole in your intake filters. its only common knowledge you need to breath more air in since your letting more out with your washers.

jkjk, buy a real exhaust.

Chuck33079 · 08-06-2013, 05:29 PM

In the filters? I thought it was supposed to be after the maf for more power.

fuct · 08-06-2013, 05:37 PM

Quote:

Originally Posted by Chuck33079

In the filters? I thought it was supposed to be after the maf for more power.

danelonson · 08-06-2013, 06:49 PM

Quote:

Originally Posted by SouthArk370Z

Unless you put a bunch of washers in there it shouldn't make that much difference. My money is on the guys that are saying your driving habits changed.

I placed 4 washers on each bolt. Can the hot gases hitting the wheel speed sensors be causing the range indicator to go crazy? I inspect the underbody of the car every so often and verify that the hot gases aren't melting any of wires and don't see any damage being done by this mod.

SouthArk370Z · 08-06-2013, 07:11 PM

Quote:

Originally Posted by danelonson

I placed 4 washers on each bolt. Can the hot gases hitting the wheel speed sensors be causing the range indicator to go crazy? I inspect the underbody of the car every so often and verify that the hot gases aren't melting any of wires and don't see any damage being done by this mod.

I'm not sure how the car computes range. I feel sure that tank level and consumption rate (injectors?) are used but don't know about speed. I'm not even sure how the car determines speed. Does it look at just one wheel (if so, which one?) or does it integrate all four? Info may be in FSM but I'm too lazy to look right now.

Exactly what symptoms are you lumping under "crazy"? The range will change depending on how you are driving the car. Drive harder and the range will drop; drive easy and the range will go up.

As I mentioned earlier, it should be easy to bolt some sheet metal deflectors onto the flange to direct flow away from vital parts.

luigi90210 · 08-06-2013, 07:27 PM

I did the same with my car, no problems with down low. My gas milage went down when I first did it because I was gunning it a lot but now its exactly the same as it was before since I have gotten use to the exhaust.

I never believe the DTE thing since that was never accurate before and it won't be after mods.

Chuck33079 · 08-06-2013, 07:40 PM

The only mods that should effect the distance are injectors or maybe a drastic change in tire size.

Arrvaxx · 08-06-2013, 07:47 PM

Haha. We need a 'you are a **** but funny-rep' option.

Quote:

Originally Posted by kenchan

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

zero · 08-06-2013, 07:52 PM

Quote:

Originally Posted by GaleForce

Because the new exhaust fumes affect your vision and judgement?

High on CO?

03WhiteGT · 08-06-2013, 08:01 PM

LOL @ all you who need to rely on the DTE instead of the dots. When it gets down to two or three dots, I fill up. It’s that easy and guess what,,,,, there's next to zero chance I will ever run out of gas.

Never in my life have I heard of anyone creating an exhaust leak to make the exhaust sound better,,,, until I bought my 370 and started reading the forums. I think it's dumb, but it’s not my car so washer away. And as stated before; creating an exhaust leak post 02 sensor will have no measurable affects on HP/TQ. It's all in your head.

Chuck33079 · 08-06-2013, 08:03 PM

Quote:

Originally Posted by 03WhiteGT

When it gets down to two or three dots, I fill up. It’s that easy and guess what,,,,, there's next to zero chance I will ever run out of gas.

So you haven't been keeping up on the fuel starvation issue?

08-06-2013, 05:18 PM	#20 (permalink)
fuct A True Z Fanatic Join Date: May 2009 Location: Sugar Land Posts: 3,692 Drives: 97' Ranger :) Rep Power: 24	you guys doing the washer mod are missing the intake side as well. you need to go poke a 2 inch hole in your intake filters. its only common knowledge you need to breath more air in since your letting more out with your washers. jkjk, buy a real exhaust. GaleForce likes this.

08-06-2013, 05:29 PM	#21 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	In the filters? I thought it was supposed to be after the maf for more power. GaleForce likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

08-06-2013, 07:40 PM	#26 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	The only mods that should effect the distance are injectors or maybe a drastic change in tire size. fuct likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

08-06-2013, 08:01 PM	#29 (permalink)
03WhiteGT Base Member Join Date: May 2011 Location: Dallas, TX Posts: 31 Drives: 2008 Corvette Rep Power: 14	LOL @ all you who need to rely on the DTE instead of the dots. When it gets down to two or three dots, I fill up. It’s that easy and guess what,,,,, there's next to zero chance I will ever run out of gas. Never in my life have I heard of anyone creating an exhaust leak to make the exhaust sound better,,,, until I bought my 370 and started reading the forums. I think it's dumb, but it’s not my car so washer away. And as stated before; creating an exhaust leak post 02 sensor will have no measurable affects on HP/TQ. It's all in your head. luigi90210 likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Odd noise in 2-3k RPM range	mantella87	Intake/Exhaust	2	04-29-2013 03:06 PM
Does anyone who drives in the winter have the FI exhaust?	kfull	North East Region	4	12-04-2012 03:04 PM
Mid range power	Z370Z011	Engine & Drivetrain	5	10-24-2012 04:26 AM
Any information on early 370z test drives/track drives?	E82TT6	Nissan 370Z General Discussions	1	07-26-2012 09:36 AM
rim width range	AviatorTim	Wheels & Tires	2	11-05-2011 01:56 PM

08-06-2013, 07:27 PM	#25 (permalink)
luigi90210 A True Z Fanatic Join Date: Apr 2012 Location: San Diego CA Posts: 1,103 Drives: Classified Rep Power: 15	I did the same with my car, no problems with down low. My gas milage went down when I first did it because I was gunning it a lot but now its exactly the same as it was before since I have gotten use to the exhaust. I never believe the DTE thing since that was never accurate before and it won't be after mods.