BMW E46 320d 150ps - boost spike, fix by custom map?

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BMW E46 320d 150ps - boost spike, fix by custom map?

Postby martinlink » Sun Oct 16, 2016 7:10 pm

Hi!

The car is a 2002 E46 320d 150ps manual. Decat, EGR delete, no leaks anywhere.
Boost is fine with stock map. With tuned files (tried many already) it spikes pretty bad, followed by a big correction by N75 (flat spot/underboost between 2100 and 2700rpm).

Should this be corrected by tune or is it physical? (i.e. need to adjust actuator or stop screw)

Here is graph:
http://s442.photobucket.com/user/martin ... s.png.html

Grey = boost actual, orange = boost requested. Light blue thin line = N75% Other 2 are MAF.

Log file is in attachment. 3rd gear 1500 -> 4000 at full throttle.

Thanks!
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Re: BMW E46 320d 150ps - boost spike, fix by custom map?

Postby Remapmaster » Thu Oct 20, 2016 3:15 pm

It can be fixed in the geometry map.

Custom Remap | DPF OFF | EGR OFF | STAGE 3 | ecumap.com |
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