jb4 for N42 engine?

zippy320

Well-known member
Ok im not going to do this to my car, but I keep hearing about Jb4s all over the place, I dont know much about what it is , only that its some sort of piggyback computer for the cars.

But do they exist for the E46 N42 engine? has anyone done it? Does it really give more power?

Is this only for turbo cars?

Thanks!
 

Twinz

Forum - Support
Staff member
There is a Jb for (non) turbo cars.

For BMW e-series after the e46 series. Such as e90 etc...
 

zippy320

Well-known member
So it would be a Jb for the N46 engine 320i? or just the bigger motors?

Twinz@TheFanatics said:
There is a Jb for (non) turbo cars.

For BMW e-series after the e46 series. Such as e90 etc...
 

Twinz

Forum - Support
Staff member
For the 3 - series:
E90/91/92/93: 323/ 325/ 328/ 330

Same unit also fits the following series: 1/5/6/7/X5/Z4

I have personally installed two on the 330 and 130 series. Power is okay for an NA car.

zippy320 said:
So it would be a Jb for the N46 engine 320i? or just the bigger motors?

Twinz@TheFanatics said:
There is a Jb for (non) turbo cars.

For BMW e-series after the e46 series. Such as e90 etc...
 
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