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  #85  
Old 03-04-2012, 09:04 AM
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Re: How To: Install a new EGR

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Originally Posted by brentwoodkris View Post
Between doing the SRT8 CAI, K&N, and EGR, I gained at least 1mpg in city. Which is a marked percentage increase over my standard 10.5mpg city. Basically a 10% improvement. I don't do much highway driving, so can't speak for that, but for the money I spent, it was well spent.
How did you calculate this?
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  #86  
Old 03-04-2012, 01:19 PM
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Re: How To: Install a new EGR

Did the old fashioned pen/paper method between each fill-up. I consistently use the Jeep for back/forth to campus city driving only and the occassional grocery shopping so consumption is very consistent. I've been monitoring things like IAT with my new Scangauge which is markedly better than the old resonator stock one as well.

Also, even though the Jeep itself only calculates MPG for the last 30 miles avg., it's always consistently higher by at least 1mpg than it was before...
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  #87  
Old 03-04-2012, 08:46 PM
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Re: How To: Install a new EGR

I would agree that exhaust does nothing and same with most intakes; just noise makers. I noiticed a smoother idle with the new EGR, and 1 mpg better hwy, but not any change in the way it runs. The biggest improvement believe it or not was running seafoan in the oil for 35 miles before changing it, and also in the gas tank. It really has notable improvment in pickup, especially when floored and is much quieter and smoother. I use good inhector cleaner every 5k, but seafoam did the trick.
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  #88  
Old 03-04-2012, 08:56 PM
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Re: How To: Install a new EGR

Seafoam in the oil? I've used it in gas before, but using it in the oil would freak me out. Especially with the crazy MDS system.
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  #89  
Old 03-04-2012, 09:31 PM
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Re: How To: Install a new EGR

Well I did the seafoam in all three and put it in the oil for about 300 miles the mds worked just fine, my jeep ran great with the new oil and I picked up better mpg a little. So after doing this I dicided to not do the EGR and will wait until I get codes with . I did reset the computer after doing all the cleaning and putting in the new oil. So I think unless you are throwing codes do a good seafoam.
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  #90  
Old 03-04-2012, 09:47 PM
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Re: How To: Install a new EGR

I'm a fan of preventative maintenance. Did the EGR because it's bound to fail on me sooner or later, likely when I wouldn't have the time or money to do it. So i just went ahead and did it. Now if only I could find time to install my BT catch can...(I spent all weekend de-winterizing the bike to actually get some decent mpg on the road for a change)
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  #91  
Old 03-04-2012, 11:59 PM
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Re: How To: Install a new EGR

Intakes do make a difference, not just noise makers. K&N has proven this by dyno's on their website. And a free flowing exhaust only makes sense that it would make an improvement also
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  #92  
Old 03-05-2012, 07:13 PM
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Re: How To: Install a new EGR

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Intakes do make a difference, not just noise makers. K&N has proven this by dyno's on their website. And a free flowing exhaust only makes sense that it would make an improvement also
Mr Marlboro will tell you cigarettes don't cause cancer as well.
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Old 03-05-2012, 08:05 PM
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Re: How To: Install a new EGR

They show that smoking is a leading cause of cancer on all of their products. And why would they be used on as many vehicles as they are of they did nothing?....

Anyway, this thread is for EGR. Little off topic ha
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  #94  
Old 03-06-2012, 08:27 PM
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Re: How To: Install a new EGR

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Originally Posted by 05WK View Post
...Anyway, this thread is for EGR. Little off topic ha
K&N CAI (and others) do not show significant hp increases at the rpm's I normally drive (1,500-3,000 rpm). I just use a K&N drop-in because I can clean it anytime I want. It's a minimum cost covenience mod; any performance increase is a no-cost bonus.



Back to topic: The EGR's on these HEMI's seem to go awry around 45-50K miles. If you have a gauge reader, you can monitor commanded and actual EGR position (i.e., EGR error) to see if it is on its way out. That's an OBD-II PID I believe. Lacking that, you'll eventually get a DTC.
I watch these parameters on 1 of my DashDAQ XL screens. It's holding up after 30K miles. The EGR is closed at closed throttle and at least half of the time in MDS mode.
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  #95  
Old 03-12-2012, 02:25 PM
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Re: How To: Install a new EGR

Quote:
Originally Posted by Walt View Post
K&N CAI (and others) do not show significant hp increases at the rpm's I normally drive (1,500-3,000 rpm). I just use a K&N drop-in because I can clean it anytime I want. It's a minimum cost covenience mod; any performance increase is a no-cost bonus.



Back to topic: The EGR's on these HEMI's seem to go awry around 45-50K miles. If you have a gauge reader, you can monitor commanded and actual EGR position (i.e., EGR error) to see if it is on its way out. That's an OBD-II PID I believe. Lacking that, you'll eventually get a DTC.
I watch these parameters on 1 of my DashDAQ XL screens. It's holding up after 30K miles. The EGR is closed at closed throttle and at least half of the time in MDS mode.
That is why I did mine, after reading your post early on. I dont wait for something to break before it gives a code, and $40 and 20 minutes is worth it.
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  #96  
Old 03-13-2012, 01:32 PM
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Re: How To: Install a new EGR

Well I got a dash hawk to watch EGR command and error, what are good commands that it is working right? If I do get a EGR valve is the one on rock auto the Airtex Wells a good one to get or the standard brand.

Thanks

Chriswk
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