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Old 12-31-2010, 09:58 AM   #1
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Viper throttle body in JK

It seems from previous posts that few here are aware of this mod. Basically, it is a direct swap for the stock TB and gives you much better throttle response. I also am getting about 1.5 MPG improvement as well. I am tuning with the SC Flashpaq and have a K&N drop-in in the stock box. it costs about $130 and you can stretch the stock intake tubing over the larger bore Viper TB (no coupler needed) if you use some lube and elbow grease. I got mine here:

0 VIPER THROTTLE BODY FOR YOU VIPER OR 07 TO 2011 JEEP JK'S WITH 3.8 BLACK PN 53032837AB

Before you start flaming...this is no TB spacer mod that does nothing. Also, I don't have access to test equipment or dyno so I'm not claiming any HP gains, though they may exist. However, this mod did more for my 4dr auto than the Flashpaq did at a fraction of the cost. I would imagine even bigger improvements if used with an aftermarket exhaust.

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Old 12-31-2010, 02:56 PM   #2
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Crazy--NOBODY has a comment about this? Can it really be that the OP is the first and only on WF to have used this modification?

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Old 12-31-2010, 04:11 PM   #3
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Any word if this has provided real-world fuel economy gains w/o any other mods? The threads on the other forums are too deep to weed through for real info vs opinion...
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Old 12-31-2010, 04:50 PM   #4
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I read through them all yesterday
  • Some folks say they are getting 1 - 2.5 mpg increase
  • Others say no gain in mpg
  • Most who have it say it makes the throttle more sensative/peppy
  • A few have said the engine runs smoother at idle
  • A couple of owners no longer hunt for 3rd and 4th with the auto going up hills

I'm still on the fence until I see some Dyno numbers.

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Old 12-31-2010, 11:09 PM   #5
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yep, show me the dyno numbers.
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Old 06-25-2011, 12:25 PM   #6
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I happen to be on the phone with QTec this morning getting a few things and asked about this part - I know they don't show it on the web site and didn't have it in stock before, but apparently they do now! You do need the Mopar part number since it isn't on the site yet (Mopar Part No. 53032837AB). They're asking $180 for it. I've heard some good things about this in the forums here and a few other places.
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Old 06-25-2011, 04:17 PM   #7
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Quote:
Originally Posted by trennmaschine
They're asking $180 for it.
I got it for about $140. Q-tec will price match, so just make sure you look at it through the Mopar Supercenter or some such thing first.
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Old 06-25-2011, 04:39 PM   #8
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Mine threw codes with Throttle position and tracking lights going off on slight downhills at freeway speed. I've read about a dozen out of 100 or so have this issue and it didn't matter whether chipped, what year, or how many miles. The only thing that MAY contribute is elevation. I was running this thing in the thin air at 8000 ft, so maybe that's why I had issues. I ended up removing it though I really liked he increased throttle response.
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Old 06-25-2011, 05:45 PM   #9
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Quote:
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Mine threw codes with Throttle position and tracking lights going off on slight downhills at freeway speed. I've read about a dozen out of 100 or so have this issue and it didn't matter whether chipped, what year, or how many miles. The only thing that MAY contribute is elevation. I was running this thing in the thin air at 8000 ft, so maybe that's why I had issues. I ended up removing it though I really liked he increased throttle response.

This is why I haven't done it. I have read many that this has happened to. I was about to buy it the last time this got brought up until I researched it and found the numerous complaints on this problem
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Old 06-25-2011, 07:26 PM   #10
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I've heard the code thing too. There has to be some common denominator. Whatever it is though, I don't have it. No problems for several thousand miles now.
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Old 06-25-2011, 09:56 PM   #11
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This is def a mod I am going to try out, I also have a friend that has a dyno in his shop, I figour for a $180 what the hell might as whell see what happens, iv tryed everything to get more power out of my jk short of a super charger.
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Old 06-25-2011, 11:41 PM   #12
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Quote:
Originally Posted by rics1997 View Post
This is why I haven't done it. I have read many that this has happened to. I was about to buy it the last time this got brought up until I researched it and found the numerous complaints on this problem
My feelings exactly.
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Old 06-26-2011, 02:50 AM   #13
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Wouldn't this void the warranty as well as not pass emissions testing in California?
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Old 06-26-2011, 03:43 AM   #14
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I live in Alberta Canada lol no air care out here and if I have problems I'll take it off and replace the stock tb, the stealership wont honor there warrenty with mine cuz of all my other mods anyways, which is kinda a joke!!!! But hell if I get a bit more power for a cheap price what the hell worth a try
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Old 06-26-2011, 08:21 AM   #15
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Quote:
Originally Posted by Thracks
Wouldn't this void the warranty as well as not pass emissions testing in California?
Why would that be so? It wouldn't seem any worse than an after market air intake.
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Old 06-26-2011, 12:25 PM   #16
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My jeep does the 'code thing' when coasting downhill but the same thing happens to my ford pickup.
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Old 06-26-2011, 02:16 PM   #17
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The only concern I had about the conversation with QTec was that they said the opening on this was 72mm (I thought I read in the Mopar site that it was 65mm). QTec also specified it was from a 2008 Viper. I didn't see the same spec on the Mopar site (or in other threads here), so maybe there is a difference depending upon which TB you get.

Thin air notwithstanding, there must be a common denominator for the code-throwing (as Mike points out), so it would be worth hearing from anyone on the forum who has made this mod about the specific codes being reported and under what conditions.

Ric - what other "numerous problems" have you read about using this mod (other than throwing a code)?

Mike - I will definitely price-match QTec for this, since I saw the link you posted in another thread with the Mopar site (need to look that link up again) and did make a note of the $140 price there.
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Old 06-26-2011, 02:20 PM   #18
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My jeep does the 'code thing' when coasting downhill but the same thing happens to my ford pickup.
The only thing common is a CAI. Jeep is an auto, fffffffford is astick. Jeep has VTB.
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Old 06-26-2011, 02:25 PM   #19
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Price update - Found this... 0 VIPER THROTTLE BODY FOR YOU VIPER OR 07 TO 2011 JEEP JK'S WITH 3.8 BLACK PN 53032837AB They do spec it as an 08 Viper with 72mm opening...
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Old 06-26-2011, 02:26 PM   #20
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I read code P2173......high air flow.
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Old 06-26-2011, 02:31 PM   #21
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Quote:
Originally Posted by nvkid
The only thing common is a CAI. Jeep is an auto, fffffffford is astick. Jeep has VTB.
Mine has a CAI, though it is a manual trans. No codes. Nothing at all.
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Old 06-26-2011, 02:46 PM   #22
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No problems coming down a long hill ???
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Old 06-26-2011, 03:27 PM   #23
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Quote:
Originally Posted by nvkid
No problems coming down a long hill ???
No problems, no codes, nothing. Jeep idles and revs more smoothly. No downsides I'm aware of.
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Old 06-26-2011, 03:44 PM   #24
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Old 06-26-2011, 08:40 PM   #25
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Mike - I'm ordering one. I'll try and get the price-match from QTec ($129.00 - based on the above link). If they don't match it, I'll order it from Mopar Supercenter.
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Old 06-26-2011, 10:43 PM   #26
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Next, try a little louder muffler. You`ll like it.
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Old 06-26-2011, 10:44 PM   #27
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Next, try a little louder muffler. You`ll like it.
Caution, your mpg might drop.
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Old 07-30-2011, 11:38 PM   #28
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I am so Happy this worked! After I talked to my local Jeep dealer and got a $500 quote for a Throttle Body,and 2 weeks after my Intake Gasket was done. I decided to see what I had for after Market Throttle Bodies. I came across this post. I thought about it and I have the Jet Stage 2 Chip and a K&N Filter. I ordered up the the 08 Viper Throttle Body. I checked out the Spectre Performance site and talking with them the coupler size was a little weird. I decided I was going to buy a 3" to 2.5" and a 3" to 4" After I recieved everything I feel like I need a gasket to go between the throttle body and the intake(that I did not order). I found that there was too much restriction with a throttle body spacer. So, I need to cut my own. Next, the coupler worked better with the 3" to 2.5". I do however think that I am going to try to pick up a snorkel kit or cold air kit. I think it might fit better.

I have NO problems with throwing codes yet after 100 miles, but I will keep everyone up to speed on that. This Viper Throttle Body seems to have better throttle response and I also seem to get a wider range of power.
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Old 08-29-2011, 06:56 PM   #29
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So, after driving on the new throttle body I am still getting some ETC lights here and there. I am going to experiment with changing my grade of gas and pulling my jet performance chip. The goal is no codes.
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Old 10-09-2011, 07:50 PM   #30
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So, after driving on the new throttle body I am still getting some ETC lights here and there. I am going to experiment with changing my grade of gas and pulling my jet performance chip. The goal is no codes.
Have any updates for us?

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