1jz E36 BMW frankensteining

[Mitevo7]

Hi All,

Finally got my 1JZ converted E46ci running on the road, car is filthy and need massive cleaning in and out. Got some question on the idling RPM. I am using Dakota Tachometer Signal Interface to run the RPM cluster on stock E46 instrument cluster, we successfully mate all the wires (pretty easy) and RPM is running smoothly at any throttle input, however, i am detecting the RPM seems read abit low on idling, engine remains stable at idling though.

At cold start, RPM start of at 1.1k and slowly return to 550 rpm at warm state. Is that the correct reading or the signal interface somehow reads lower ?

Thanks,
Ken

 

[Izso]

Hi All,

Finally got my 1JZ converted E46ci running on the road, car is filthy and need massive cleaning in and out. Got some question on the idling RPM. I am using Dakota Tachometer Signal Interface to run the RPM cluster on stock E46 instrument cluster, we successfully mate all the wires (pretty easy) and RPM is running smoothly at any throttle input, however, i am detecting the RPM seems read abit low on idling, engine remains stable at idling though.

At cold start, RPM start of at 1.1k and slowly return to 550 rpm at warm state. Is that the correct reading or the signal interface somehow reads lower ?

Thanks,
Ken

I don't have any point of reference but I think 550 rpm is a little on the low side. I'd need to ask a mech friend how he did the 2jz + stock e46 meter cluster merge. Let me get back to you.

 

[Mitevo7]

I don't have any point of reference but I think 550 rpm is a little on the low side. I'd need to ask a mech friend how he did the 2jz + stock e46 meter cluster merge. Let me get back to you.

The engine is not vibrating or near stall scenario, my mech told me the signal just read a little low. Revving it and idling everything seems perfect.

What cluster are you using ?

Thanks,
Ken

 

[Izso]

The engine is not vibrating or near stall scenario, my mech told me the signal just read a little low. Revving it and idling everything seems perfect.

What cluster are you using ?

Thanks,
Ken

Mines the 36, not 46. Meaning I don't have a canbus. My meter runs off a speed sensor in the diff and that also controls the trip meter. The RPM reads off the 1JZ sensor fine. Water temp doesn't work though.

Ok my friend replied, on the 46 it was using the links ECU and that has a canbus interface so it hooked up with the meter cluster very easily.

 

[Mitevo7]

Mines the 36, not 46. Meaning I don't have a canbus. My meter runs off a speed sensor in the diff and that also controls the trip meter. The RPM reads off the 1JZ sensor fine. Water temp doesn't work though.

Ok my friend replied, on the 46 it was using the links ECU and that has a canbus interface so it hooked up with the meter cluster very easily.

My mechanic is using Dakota Universal Tachometer Signal Interface to read the RPM signal, i read from somewhere if my cluster is from a 4cyl BMW engine, the RPM signal may off by a little compared to a 6cyl. Should i try off with a 6cyl BMW E46 cluster ?

Thanks,
Ken

 

[Izso]

My mechanic is using Dakota Universal Tachometer Signal Interface to read the RPM signal, i read from somewhere if my cluster is from a 4cyl BMW engine, the RPM signal may off by a little compared to a 6cyl. Should i try off with a 6cyl BMW E46 cluster ?

Thanks,
Ken

I honestly have no clue. Your E46 was a 4 potter? Considering a standard meter is RM300-400, you might as well get a RPM standalone meter? Unless you're looking to go low-profile then not too expensive trying. I don't see how the dash would be different though.

 

[parakey]

Hi All,

Finally got my 1JZ converted E46ci running on the road, car is filthy and need massive cleaning in and out. Got some question on the idling RPM. I am using Dakota Tachometer Signal Interface to run the RPM cluster on stock E46 instrument cluster, we successfully mate all the wires (pretty easy) and RPM is running smoothly at any throttle input, however, i am detecting the RPM seems read abit low on idling, engine remains stable at idling though.

At cold start, RPM start of at 1.1k and slowly return to 550 rpm at warm state. Is that the correct reading or the signal interface somehow reads lower ?

Thanks,
Ken

Congratulations. Come, let's TT for the unveiling

 

[Mitevo7]

I honestly have no clue. Your E46 was a 4 potter? Considering a standard meter is RM300-400, you might as well get a RPM standalone meter? Unless you're looking to go low-profile then not too expensive trying. I don't see how the dash would be different though.

Yes my E46 was with M43B19 before transition. Honestly speaking i don really mind the RPM being 100 lesser than it should be, if we could make it completely stock looking why not? I am not using manual GB for the meantime so there is not risk of over-revving.

What aftermarket digital dash can be bought without too much much budget ? My assumption is RM3k at most.

Thanks,
Ken

 

[Mitevo7]

Congratulations. Come, let's TT for the unveiling

You can go back few pages to see my car, really nothing to shout out. Sleeper AF from the outside, even my intercooler is painted in black. Stock height and slightly bigger brakes.

Thanks,
Ken

 

[Izso]

Yes my E46 was with M43B19 before transition. Honestly speaking i don really mind the RPM being 100 lesser than it should be, if we could make it completely stock looking why not? I am not using manual GB for the meantime so there is not risk of over-revving.

What aftermarket digital dash can be bought without too much much budget ? My assumption is RM3k at most.

Thanks,
Ken

What ECU you using again? Some ECUs have those race packs like the Haltech and Links ones.

 

[gunnerzz]

Hi All,

Finally got my 1JZ converted E46ci running on the road, car is filthy and need massive cleaning in and out. Got some question on the idling RPM. I am using Dakota Tachometer Signal Interface to run the RPM cluster on stock E46 instrument cluster, we successfully mate all the wires (pretty easy) and RPM is running smoothly at any throttle input, however, i am detecting the RPM seems read abit low on idling, engine remains stable at idling though.

At cold start, RPM start of at 1.1k and slowly return to 550 rpm at warm state. Is that the correct reading or the signal interface somehow reads lower ?

Thanks,
Ken

I'm not an expert but in theory the reading should be consistent.
Whats the reading during idle if u plug in OBD?

I experience 2-3 times my BLM tacho showed very low reading. Idling is at almost 0rpm on the tacho but the engine is behaving normally. This happen if i didnt drive the car for some time. After 2-3 times restarting the engine it becomes normal.

 

[parakey]

really nothing to shout out

A car is appreciated not only because it's exotic or it's it's expensive. Any vehicle well appreciated by it's owner is worth looking into

 

[Mitevo7]

What ECU you using again? Some ECUs have those race packs like the Haltech and Links ones.

Stock 1JZGTE VVTI ECU hooked up on Dakota Universal Tachometer Interface to power up the instrument cluster. Meter is running fine except for the RPM, reads slightly lower.

Thanks,
Ken

 

[Mitevo7]

I'm not an expert but in theory the reading should be consistent.
Whats the reading during idle if u plug in OBD?

I experience 2-3 times my BLM tacho showed very low reading. Idling is at almost 0rpm on the tacho but the engine is behaving normally. This happen if i didnt drive the car for some time. After 2-3 times restarting the engine it becomes normal.

Probably i should let the car on the road for a while now, now we are hooking up the BMW gear level with sport shifter and tidy up those fried meehoon wires.

Thanks,
Ken

 

[vr2turbo]

Congratulations. Come, let's TT for the unveiling

Wah! you all bring your beemers then we cannot join dy, or we need to park far far away......lol

 

[marsha1l_v6]

My mechanic is using Dakota Universal Tachometer Signal Interface to read the RPM signal, i read from somewhere if my cluster is from a 4cyl BMW engine, the RPM signal may off by a little compared to a 6cyl. Should i try off with a 6cyl BMW E46 cluster ?

Thanks,
Ken

similar case in point.

using v6 cluster meter...rpm way off once above 3k rpm. So i swapped in gsr meter . it works, rpm normal.

 

[Izso]

Stock 1JZGTE VVTI ECU hooked up on Dakota Universal Tachometer Interface to power up the instrument cluster. Meter is running fine except for the RPM, reads slightly lower.

Thanks,
Ken

How on earth did you bypass or work on the sensors and all? And all the BMW stuff works?

 

[Mitevo7]

How on earth did you bypass or work on the sensors and all? And all the BMW stuff works?

Yes almost all the BMW stuff works, AC control, ABS, Traction, water temperature, wiper fluid, brake pad sensor and speedometer all working fine, except for tachometer, reads a little low. I have so called the best wireman in Klang to work on my car, so i will see how the car performs at the end of project.

Almost all the essentials are working, except for gear position indicator, i need to use an aftermarket gear position indicator to show which gear i am in, especially when playing with sport mode. I am think of installing those motorcycle universal gear indicator to read my gearbox position, don't know whether it can work or not. Any bright ideas ?

Thanks,
Ken

 

[Mitevo7]

similar case in point.

using v6 cluster meter...rpm way off once above 3k rpm. So i swapped in gsr meter . it works, rpm normal.

Really ? If that would solve my obsession of perfect, i would swap it to a 6 Cyl meter right away, but i am curious, what was the basis anyway ? For your case, what is the difference between GSR and V6 meter and why would the RPM read so much different before and after swap?

Thanks,
Ken

 

[sanekit]

I am think of installing those motorcycle universal gear indicator to read my gearbox position, don't know whether it can work or not. Any bright ideas ?

Thanks,
Ken

you'll need to wire it at the tcu. the one that engages the solenoid. there should be tonnes of wiring diagram online.