i have a 46RE tranny in my truck and i'm interested in purchasing a J-hook but every one that i've found says it is for a 47RE tranny. does it really matter or doesn't it. and if there is one for a 46RE tranny i'd appreciate knowing where i can find it. and another thing is does anyone have one on their truck? if so how do you like it. well thats all for now i'll update as time goes on.

thanks

 

You are talking about a j-hook for the wastegate right?

 

What exactly are you looking for??? The only J-hook I know of goes on the turbo and not the tranny. The J-hook is used to hold the wastegate shut longer to get more boost.........doesn't matter what type of tranny!!


~Nick

 

As I understand it, the J-hook is used on trucks equipped with automatic transmissions or the standard output engines because the turbo wastegate has a hard line running to the vacumn controller. The HO trucks use a different turbo that has a hose connecting the two which allows the use of the boost-fooler or restrictor to control boost.
I put one on mine and it works well, if you don't run a chip, it'll cause the "check engine light" to come on and indicate an overboost condition.

 

The J-Hook is only needed for automatic equipped trucks from 2001 onward and upward.
All previous automatic trucks don't have a hardline wastegate,
and manual tranny trucks never needed the J-Hook.

(not sure on 2003 on up manual tranny trucks though?)


phox

 

yes i am talking about a j hook for the waste gate. and i know that it is for the turbo but in catalogs and such it says for automatic trucks with a 47RE tranny and mine is a 46RE so i was just wondering if i mattered.

 

What year is your truck? The J hook is for the HY-35.

 

How do you have a 46RE hooked to a Diesel?
No way would it be able to handle the torque, even with a stock Diesel engine.

Ok, according to your profile (signature isn't filled in by the way), you have a 2002 2500.

You do indeed have a 47RE transmission, unless you have an 8 cyl gas engine under the hood.


phox

 

How do you know it is a 46. I have never heard of that. could you be mistaken?

 

He is.
46RE is the automatic transmission that comes attached to the Dodge 1500's, and possibly Dakotas/Durangos.

V10's and Diesels have the 47RE up till mid 2003 when the 48RE made it's debut.

phox

 

I was just trying to be nice

 

ok sorry everyone. actually no i'm not. this guy i know works on transmissions and i took my truck over to his house to find out what tranny i have and he looked under my truck and then got back up and said that is was a 46RE so now i feel stupid but you are all saying that my tranny is a 47RE. if so i need to know? but my truck is a 2002 2500 to answer your ? AAmeeting. so now that clears that up i appreciate everyone's input.

thank you
andrew

 

Yep you have the 47RE in yours. The J-hook as of right now will not benefit you until you get a chip or box that has a boost fooler built in. That way you can get more boost but it won't throw a code and de-fuel your truck.

So to sum it up, get a chip first and then throw on the J-hook.........and trust me you will be all grins!!

~Nick

 

I own a 2002 2500 diesel, auto (47RE). I have the J-hook, and boost fooler to go along with my Superchips programmer.

As I understand it (and I don't claim to be an expert) you need 2 things for more power. More fuel and more air/boost to help burn that fuel without raising EGT to a dangerous level (and maybe more timing to aid the process too).

The fuel boxes that plug in under the hood (such as an edge EZ) typically come with a boost fooler, and add more fuel, which causes more boost.

My Superchips does not plug in under the hood, it reflashes the ECM via the OBDII port. The J-hook is only needed on 2001 and 2002 diesel automatic tranny trucks. I added the J-hook to delay the opening of the wastegate (more boost) then added the electronic boost fooler that plugs into the MAP sensor so the ECM does not see the increased boost and set a code or defuel the engine. Normally, the J-hook would increase boost, then the ECM would sense the higher boost and set a code (although it may not necessarily light the check engine light), and the truck would "defuel" to lower the boost . The boost fooler does not allow the "overboost" signal to get through to the ECM.

So, the J-hook mechanically raises boost (or more correctly allows higher boost levels) then the boost fooler doesn't let the ECM "see" the higher boost levels. Both of these are good to lower EGT - not necessarily for more power.

If you add more fuel (such as the Superchips does) that adds power, but it also adds heat. You need more air to reduce the heat, to allow the added fuel to be safely burned.

I read a post on this forum that made a lot of sense about diesel engines.

More fuel = more power = higher EGT
More air allows more fuel to be burned at lower EGT.

Someone corect me if I'm wrong. Sorry for rambling...