Me78569

Pcm tells the ecm to defuel as tm looks at trans gear and speed. Thats why the tm rad box taps into the ccd bus.

Common. Read the how to pinned in this section.

Any of the small or stock injector tunes would fit well.

what are your mods if any?

Does it actuallt increase pressure? I don't believe so, it might keep pressure at peak longer, but overall pressure not so sure. The way I understand it the pump is always pumping peak amount, but the solenoid is what control how much to release to the nozzles.

112% should do it to just touch max fuel. 125-130% for steady max fuel

grab any of the mid injector tunes then adjust from there.

injector size is the key info when it comes to the tune. the extra air just means you can throw more fuel at it up top if you like.

man, breaking a 4.0 is not an easy task I've seen some pretty nasty 4.0's run.

Heres the user manual.

Are you keying off for 10 seconds between mode selection? Are you ensuring you are not moving to 3 cyl mode prior to 6 cyl mode? The ecm holds on to the lowest temp mode until key off, you cannot switch between 3 and 6 mode without keying off for 10 seconds.

I dont remember anymore, but i prob ran the cross over cable for the lights on the battery cross over cable

Sorry, I should have been more clear to start, you won't damage ( aka fry) the ecm but the wrong flash for the truck can cause issues with running. Bob is pretty good at getting back to people so I am sure he will get you fixed up.

@AH64ID. Do you have contact info for someone that can help?

You need to talk to smarty and get the right flash for the ecm. It put a early flash on a late truck. Early trucks have crank and cam sensors late only have cam. Call smarty or bob wagner and talk to them

NP, I am not a fan of the smarty, but it does do ecm updates well. Assuming of course the memory on the ecm is not worn out. It is getting more and more common to see the memory on these old ECMS kick the bucket when you try to update. Not to say you shouldn't just that it is possible. If it were me I would give it a go.

I found time last night and this morning to replace the front control arm bushings. pretty easy to do and now the shimmy on break is much less. I think I still need tie rods, but it is coming along.

use the smarty to flash the ecm with the correct programming. no it won't fry, all vp44 ecms are interchangable.

It's kinda nice working on a car that is documented and hacked so much. The e46 platform made use of system similar in purpose to the ccd bus in the 2nd gen, however it was a standard protocol. Each module in the car knows the vin, and mileage and you get issues if you swap used parts around. since my wagon is a drivetrain swapped car it makes sense that things would not be matching. The PO doesn't appear to be computer savy so he just let it be. Minor issues, like high beams not working / check control always on / dsc light on dash/ srs light on. $8 later I bought a obd tool to connect to the computer then downloaded PA Soft 1.4 ( bmw tool) for free. I am able to read module status and errors and reprogram them to know what car they are in. Another 8 dollar for another cable and I am able to read and write to the ecm to update my own ecm flash. I can even read -> adjust -> upload changes So far I have fixed 1. light control module now knows it did not come with bi-xenon lights so bulb check works and high beams work with my retrofitted d2s 5.0's 2. check control now works to tell me bulb out messages and door open messages 3. sunroof module has been resynced to work 4. srs light has been turned off and srs module knows the vehicle 5. all modules now agree on a mileage and a vin ( except abs) things I have changed 1. windows now roll down and up via the unlock and lock buttons on the key fob 2. clutch safety has been disabled on start so you can crank without the clutch being in. 3. key now unlocks all doors on 1st button press rather than having to double press unlock 4. the temp gauge now reads exact temps in the center position rather than a dummy gauge. still left to reprogram 1. abs needs to be programmed using another program. That will enable the dsc to work again 2. dme / ecm needs to be flashed with an updated version Today the mail man is bringing me some suspension bits to cure my wobble on brake and trans bushings.

look at our hosted tunes, the default tune is VERY safe for ANY application and isn't really geared towards being super aggressiv both of these tunes will give a much different feel than the stock tune. This tune is simply the hardest fueling tune ever put out for the quad. If you go WOT it will give you all the fuel.

Car now has D2S 5.0's I am alittle underwhelmed honestly, but the bulbs are pretty old. I forgot how much work it is to build a set lol.

You can leave the quad connected. There are 3 buses on the vp4 trucks j1939 that the quad uses cci bus that the computers talk to each other on sci bus that scan tools use. the scan tool and the quad are reading apps data from different sources. The quad is reading hte ecm output so I would tend to believe that. I am going to guess your wastegate is opening way to soon.

above 30 psi would my guess.full yopen by ~45psi? @dieselautopower any thoughts on when the wastegate should open.

Maybe I would test to see when the wastegate is opening.

also data log the issue and post it so we can look at it.