Reply
 
Thread Tools Search this Thread Display Modes
 
Old 08-04-2013, 09:24 AM   #1
2 Rivet Member
 
Austin , Texas
Join Date: Oct 2009
Posts: 38
RennTech Modification Questions

Noticed that some owners have opted to modify their Interstate with a RennTech modification that boosts the power of the vehicle.

Any thoughts on this modification?

Pros and cons?
__________________

__________________
RavenDog is offline   Reply With Quote
Old 08-04-2013, 09:42 AM   #2
3 Rivet Member
 
2011 Interstate Coach
Tulsa , Oklahoma
Join Date: Aug 2011
Posts: 132
Our I3500 got the Renntech upgrade at mile 5000. I have no complaints at all. The performance is very good, but not radical. We may have lost .5mpg but it is well worth the performance gains. Our present mpg number are 19.0-19.5. The power gains at 62-75mph, give you the power to pass another vehicle comfortably. I felt the power curve in that range was a bit flat. Don't misinterpret me, at those speeds, I am not trying to seek out vehicles to pass but there were situations that called for it.
I would suggest the upgrade. All pros, no cons.
Road Jager
__________________

__________________
Road Jager
Living On Tulsa Time
RoadJager is offline   Reply With Quote
Old 08-04-2013, 02:00 PM   #3
2 Rivet Member
 
Austin , Texas
Join Date: Oct 2009
Posts: 38
Do the ECU adjustments affect the warranty?

From what I understand, each time the dealer or whomever tunes the Interstate, the ECU needs to be sent back to RennTech for reprogramming. However, it's a free reprogram, except for the mailing charges. Is this correct?
__________________
RavenDog is offline   Reply With Quote
Old 08-04-2013, 06:08 PM   #4
3 Rivet Member
 
2011 Interstate Coach
Tulsa , Oklahoma
Join Date: Aug 2011
Posts: 132
That is something you should ask Renntech. They are very approachable.
Road Jager
__________________
Road Jager
Living On Tulsa Time
RoadJager is offline   Reply With Quote
Old 08-05-2013, 06:40 PM   #5
Rivet Master
 
73shark's Avatar
 
2011 Interstate Coach
Overland Park , Kansas
Join Date: Aug 2011
Posts: 2,748
Don't know about Mercedes but Chevy will void powertrain warranty if they discover a tune or remnants of one.
__________________
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.

PM me for sale info on my 2011. SOLD!
Upfitted Transit 350 sitting in driveway.
73shark is offline   Reply With Quote
Old 08-05-2013, 08:47 PM   #6
4 Rivet Member
 
Teamaron's Avatar
 
Currently Looking...
2014 Interstate Ext. Coach
Boca Raton , Florida
Join Date: Jul 2011
Posts: 308
Being down in Florida I had ours tuned at Renntech in palm beach.

Ours is a 2010 on a 2008 chassis which I believe only made about 154 hp. Versus the newer ones which make 180 hp.

To us it was a big improvement. Much more getup and go. And definitely agree better highway passing power.

Also lost about 1 mpg in fuel consumption.

I don't think the ECU has to be reprogrammed after service. According to service center they only use ECU to read vehicle, not reprogram it. And Renntech agrees. But they would reprogram if need at no additional cost.

One thing with ours is that due to the older year they were not able to remove speed limiter although they said they could work on it. But to us going over 80 is really not that important or safe and comfortable.
__________________
Teamaron is offline   Reply With Quote
Old 08-06-2013, 06:42 AM   #7
Figment of My Imagination
 
Protagonist's Avatar
 
2012 Interstate Coach
From All Over , More Than Anywhere Else
Join Date: Dec 2011
Posts: 10,299
Quote:
Originally Posted by 73shark View Post
Don't know about Mercedes but Chevy will void powertrain warranty if they discover a tune or remnants of one.
Chances are, Mercedes will NOT void the warranty. The reason I say this is, Mercedes Benz of Baton Rouge is both an authorized Sprinter dealer AND an authorized Renntech dealer!

Since finding this out, I'm giving serious consideration to having MBoBR give my Interstate the Renntech treatment next time it's in for scheduled maintenance.
__________________
WBCCI #1105
TAC LA-4

My Google-Fu is strong today.
Protagonist is offline   Reply With Quote
Old 08-06-2013, 11:35 AM   #8
Rivet Master
 
73shark's Avatar
 
2011 Interstate Coach
Overland Park , Kansas
Join Date: Aug 2011
Posts: 2,748
Interesting to know. Let us know what you learn.

Speaking of scheduled maintenance, where can I find what's in the A and B maintenance? Looked thru the Sprinter books but couldn't seem to find anything.

On another thread, someone stated that the Airstream web page had access to all of the installed equipment manuals. After about an hour of searching it, I couldn't find anything. Do you know where it is?
__________________
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.

PM me for sale info on my 2011. SOLD!
Upfitted Transit 350 sitting in driveway.
73shark is offline   Reply With Quote
Old 08-06-2013, 11:44 AM   #9
Figment of My Imagination
 
Protagonist's Avatar
 
2012 Interstate Coach
From All Over , More Than Anywhere Else
Join Date: Dec 2011
Posts: 10,299
Quote:
Originally Posted by 73shark View Post
Speaking of scheduled maintenance, where can I find what's in the A and B maintenance? Looked thru the Sprinter books but couldn't seem to find anything.
Schedule A is "Oil Service Plus" in the Sprinter Maintenance Booklet. Schedule B is "Maintenance Service" in the booklet. Listing begins on Page 10 of the booklet.

Quote:
On another thread, someone stated that the Airstream web page had access to all of the installed equipment manuals. After about an hour of searching it, I couldn't find anything. Do you know where it is?
I wish! Never have found some of them, like the one for the sliding stepÖ
They do have PDF versions of many of the various Airstream manuals, but not installed component manuals that I can find.
__________________
WBCCI #1105
TAC LA-4

My Google-Fu is strong today.
Protagonist is offline   Reply With Quote
Old 08-07-2013, 09:11 AM   #10
Newbie
 
joemikeb's Avatar
 
2013 Interstate Coach
Fort Worth , Texas
Join Date: May 2013
Posts: 289
My question about the Renntech module is whether or not the vehicle will pass the Texas vehicle inspection with it installed. I had one vehicle fail inspection because the cover on the air filter had been replaced with the identical part from another GM product. The wrong brand name was painted on the cover!
__________________
Make errors ó otherwise the Great Spirit realizes
you have finished your purpose on earth.

ó Navajo saying
joemikeb is offline   Reply With Quote
Old 08-07-2013, 12:27 PM   #11
3 Rivet Member
 
2011 Interstate Coach
Tulsa , Oklahoma
Join Date: Aug 2011
Posts: 132
Quote:
Originally Posted by joemikeb View Post
My question about the Renntech module is whether or not the vehicle will pass the Texas vehicle inspection with it installed. I had one vehicle fail inspection because the cover on the air filter had been replaced with the identical part from another GM product. The wrong brand name was painted on the cover!
It is not a module. It is a software upgrade. It should not effect the emissions testing in Texas.
Road Jager
__________________
Road Jager
Living On Tulsa Time
RoadJager is offline   Reply With Quote
Old 08-07-2013, 12:29 PM   #12
3 Rivet Member
 
2011 Interstate Coach
Tulsa , Oklahoma
Join Date: Aug 2011
Posts: 132
Quote:
Originally Posted by Protagonist View Post
Chances are, Mercedes will NOT void the warranty. The reason I say this is, Mercedes Benz of Baton Rouge is both an authorized Sprinter dealer AND an authorized Renntech dealer!

Since finding this out, I'm giving serious consideration to having MBoBR give my Interstate the Renntech treatment next time it's in for scheduled maintenance.
Protag,
Get it done, money well spent. I have never regretted it or had ANY issues with it.
Road Jager
__________________
Road Jager
Living On Tulsa Time
RoadJager is offline   Reply With Quote
Old 08-15-2013, 09:19 PM   #13
3 Rivet Member
 
Jeff64's Avatar
 
2014 Interstate Ext. Coach
Springfield , Missouri
Join Date: Aug 2013
Posts: 113
Images: 1
Can anyone tell me the difference between this software upgrade and the two channel tuning module that the sprinter store is offering? Has anyone had any experience with the tuning module?

Jeff
__________________

__________________
Jeff64 is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 06:25 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.