InMotion CRD Tuning

brew1 · **Posted:** Sun Mar 02, 2008 11:44 pm

My Rocket Chip Level One tune worked great until we had to replace the TC. Unfortunately it doesn't seem to have the same amount of power after the TC was replaced, seems like the $tealership castrated the ECU. The cheap ba$tard$ wouldn't even replace the tranny pump with the improved model. Guess I'll wait until Rocket Chip attends one of the local VW TDI GTG's in my area and have the ECU reflashed back to the level one tune. Should have my SEGR unit installed by then.

nursecosmo · **Posted:** Mon Mar 03, 2008 12:14 am

brew1 wrote:

My Rocket Chip Level One tune worked great until we had to replace the TC. Unfortunately it doesn't seem to have the same amount of power after the TC was replaced, seems like the $tealership castrated the ECU. The cheap ba$tard$ wouldn't even replace the tranny pump with the improved model. Guess I'll wait until Rocket Chip attends one of the local VW TDI GTG's in my area and have the ECU reflashed back to the level one tune. Should have my SEGR unit installed by then.

Were they able to delete the EGR without CEL?

brew1 · **Posted:** Mon Mar 03, 2008 12:34 am

Jeff won't delete either without spending additional time on further research to know how turning off either effects all the other systems.

geordi · **Posted:** Mon Mar 03, 2008 1:37 am

I highly recommend the SEGR kit, if you want to kill the EGR, its the easiest way. I agree that cutting into the harness is a scary thing, but there are ways to do it without hurting the car, and ensuring success. Primary among these is using Scotchlock connectors from 3M that you can get at Radiotrash. These are similar to the cheap vampire clips that bite through a wire to form a splice, but these are designed for telephone wiring, and permanent install. The scotchlock is some jelly that seals out any incursions of dirt or moisture and protects the connection forever.

DarbyWalters · **Posted:** Mon Mar 03, 2008 9:22 am

I think the SEGR gives as much of a performance boost as most plug ins. The charged air temps are much lower and than means more power. Without the EGR adding inert hot dirty mixtures to the combustion chamber, you get a more powerful mixture which also gives more power and better response.

TdiDave · **Joined:** Sun Sep 25, 2005 8:42 pm **Posts:** 17

SEGR
I have seen this kit that is up for a group buy, would i be best to get that then do the InMotion ?

Threeweight · **Joined:** Mon May 14, 2007 5:57 pm **Posts:** 679

Yep. You will get a nice bump in MPG/power. You will also reduce the likelyhood of a EGR failure (which has been a repeated problem with the US production CRDs).

DarbyWalters · **Posted:** Mon Mar 03, 2008 8:49 pm

After getting the SEGR you might get all the performance (drivability) you want.

geordi · **Posted:** Tue Mar 04, 2008 4:07 am

DarbyWalters wrote:

I think the SEGR gives as much of a performance boost as most plug ins. The charged air temps are much lower and than means more power. Without the EGR adding inert hot dirty mixtures to the combustion chamber, you get a more powerful mixture which also gives more power and better response.

In and of itself, the SEGR is not a performance mod, it will do nothing directly for the fueling or timing. Darby is correct about the intake temps and the air volume being better, but the EGR only operates at part-throttle anyway, not when the max power is being requested. Unfortunately, when the max power is being needed... That is when the genius of the F37 kicks in to over-slip the converter and rev the engine far above it's power band... So instead of putting that NEEDED power onto the pavement... You are using extra fuel to warm up transmission fluid.

What a wonderful design.

What are the odds of buying a TCM from the dealer and having it arrive WITHOUT the F37 code on it?

MTB_TDI · **Posted:** Tue Mar 04, 2008 10:13 am

geordi wrote:

What are the odds of buying a TCM from the dealer and having it arrive WITHOUT the F37 code on it?

I'd like to know the answer to this as well!

DarbyWalters · **Posted:** Tue Mar 04, 2008 1:26 pm

Just to clarify, my point about the SEGR being all some will need is that it gets rid of that inital "stumble/waiting period" that the stock CRD has. It helps with any stop n' go city driving. Up top at WOT, I don't have any problem with the CRD performance...but I do have a 3" catback no muffler setup that might be helping up top.

gmctd · **Posted:** Tue Mar 04, 2008 2:03 pm

A 45RFE 4 speed can become a 545RFE 5 speed by simple TCM reflash to achieve 5 speed shifting - any 45RFE TCM back to '99, out of any Jeep or Dodge, is the same as the '05-'06 545 Jeep or Dodge TCM - only difference is the flashed routines from 4spd to 5spd and the obvious Diesel configuration, which is in flash memory - the 3.7 V6, 4.3 V8, 5.2 V8, and 5.4 Hemi all have the same F37 issues, and the earlier reflashed TCM's will have the official AUTHORIZED SOFTWARE UPDATE upgrade tag on the case - I have reason to s'pect the '07's are not similar, so stick with the '06-back

Now, who ya gonna call? Ghostbusters - cause nobody else is doing TCM rework to firm up the 545, 'lessen the Hemi guys are doing some secret stuff.

griznhoney · **Posted:** Tue Mar 04, 2008 5:10 pm

Getting lost in the post here....so if I do more stop and go, I should go with an SEGR vs. the INMotion? I would want something that was lo-tech and less dealer objectable as I still have some warranty left....thanks for a great post and all the suggestions!

Griz

crd liberty · **Posted:** Tue Mar 04, 2008 5:24 pm

griznhoney wrote:

Getting lost in the post here....so if I do more stop and go, I should go with an SEGR vs. the INMotion? I would want something that was lo-tech and less dealer objectable as I still have some warranty left....thanks for a great post and all the suggestions!

Griz

SEGR will shut off the EGR valve for good, unless you use the bypass
plug, which will put it all back into original confirmation for the trip to
the dealership.
The rest of what you want, is for you to decide.
The SEGR hides but if you have the EHM, which is in anyones sight,
you may want to pull, the hose and stick it back to the CCV for the
dealership visits.
Just the way I do it. You have to decide.

TdiDave · **Joined:** Sun Sep 25, 2005 8:42 pm **Posts:** 17

EHM - what is this?

The main issiues with me is that the wife uses the jeep, and her work is only 3 miles from home. So se constatly complains of it "shutting off" when she takes off from stop. I have let her drive it with the plug on the air box unhooked and stated it was better.

We really like the way it drove at first except for the 50mph shutter this is still not completly gone. After that fix from the dealership, it has drove like a pig.

crd liberty · **Posted:** Tue Mar 04, 2008 5:52 pm

http://www.lostjeeps.com/forum/phpBB3/vie ... highlight=

geordi · **Posted:** Tue Mar 04, 2008 9:01 pm

Stupid double post, I hate crap connectivity.

geordi · **Posted:** Tue Mar 04, 2008 9:04 pm

gmctd wrote:

A 45RFE 4 speed can become a 545RFE 5 speed by simple TCM reflash to achieve 5 speed shifting - any 45RFE TCM back to '99, out of any Jeep or Dodge, is the same as the '05-'06 545 Jeep or Dodge TCM - only difference is the flashed routines from 4spd to 5spd and the obvious Diesel configuration, which is in flash memory - the 3.7 V6, 4.3 V8, 5.2 V8, and 5.4 Hemi all have the same F37 issues, and the earlier reflashed TCM's will have the official AUTHORIZED SOFTWARE UPDATE upgrade tag on the case - I have reason to s'pect the '07's are not similar, so stick with the '06-back

Now, who ya gonna call? Ghostbusters - cause nobody else is doing TCM rework to firm up the 545, 'lessen the Hemi guys are doing some secret stuff.

Please decipher this for me... Do the earlier TCMs have the same crap program that the F37 installed, or do they just have their own versions based on the shift points for that vehicle? The chances of convincing a dealer to re-code the TCM for my Jeep without also updating to the same F37 program... I'm not confident. If all those boneyard TCMs are the same... I'm more than happy to go and pull one. But getting it recoded for the 5-speed will be difficult, I'd think.

Pablo · **Joined:** Thu Feb 02, 2006 10:06 pm **Posts:** 1201

Turbo Tim wrote:

I don't know if InMotion's hands are tied by big Brother for trying to shut off the EGR or not. When I talked to them a while back, I got the impression that the programs they flash in are what they get from overseas.

Interesting, while I was waiting for my Jeep to get the gauge pods, trans cooler and lift pump done I read a trade magazine from SEMA that stated that was the case. The EPA is on the chip tuners case about emissions compliance. Particularly, they are going after "off road" mods. They will allow "race car" mods, but off-road mods for a vehicle whose obvious purpose is on road (i.e. a sports car) is going to get them flagged. I think they may very well be playing the safe side with this.

gmctd · **Posted:** Tue Mar 04, 2008 11:15 pm

If the TCM has the software update tag dated '05, then it likely has F37 - may only apply to the V8's and the CRD - not enuff info to determine that distinction, yet, but I've found only one with the update label from a V8 Jeep GC - one other thing: some engines use the TCM module as the ECM - if it's on the driver's side, it's ECM - passenger side it's TCM, used only with the 45\545RFE multi-speed transmission - check the transmission connector harness end for two 2pin connectors and one large 23pin connector

You're right - a friend at the dealer would help - just hoping someone will break the TCM code in the near future.

InMotion CRD Tuning

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