Best way to do popcorn limiter on EDC16

by **lyecon** » Thu Jul 05, 2018 1:45 pm

walshy1 wrote:Hello everybody after many hours and efforts of trying to make a popcorn limiter for 1.9 JTDM 150 I'm still struggling

Correct me if I'm wrong, but doesn't the research state that increasing the precentage of pre-injection for a quiet diesel operation is necessary? EDC has tools for that. Not sure about the pre-injection timing, but most certainly the amount of fuel in pre-injection has a major effect on the way the peak pressure sounds. (also the programmed fuel pressure profile as well... experiment with that one as well? (global max. pressure table, etc.))

by **Milansvk** » Tue Feb 02, 2021 7:36 am

lyecon wrote:
Milansvk wrote:I did it in this way and int sounds quite good... But only in neutral gear. In 1.,2. Gear i doesnt heared it...

Oh, Milaaaan!
Did you forget that the EDC has a separate TQ limiter table for EACH of the gears separately?

No no i know that fact :D but conditions in deceleration/ acceleration in not loaded engine on neutral and loaded engine at 1.,2.,3... gear are different. Engine accelerate and decelerate slowly so effect is not very big. Thats my opinion. Maybe popcorn can be done effective at shifted gears but it wasnt neccesary for me. Important for my customer was only not loaded engine popcorn

by **zxcv** » Sat Mar 20, 2021 11:40 am

I've done limiter with SVRL at 4900 but sound was poor.
Can it be problem that I don't have decat?

by **Milansvk** » Tue Mar 30, 2021 6:49 am

Can you explain how you did that with SVRL? I have no idea how to do that.

by **zxcv** » Wed Mar 31, 2021 9:30 pm

Milansvk wrote:Can you explain how you did that with SVRL? I have no idea how to do that.

Reducing SVRL value is one of the common method in my case it was 5300RPM and was reduced to 4900RPM it can be even lower but it will affect max RPM while normal driving, probably it can sound better with 4700RPM.

by **Milansvk** » Sat Apr 10, 2021 6:47 pm

Ouhhh sorry. My mistake... I thought about SVRPL instead of SVRL. Yes thats giving me sense

by **bocinko** » Mon Apr 12, 2021 7:25 pm

nice :thumbup:

by **lvnts** » Sun Jun 20, 2021 10:31 pm

zxcv wrote:
Milansvk wrote:Can you explain how you did that with SVRL? I have no idea how to do that.

Reducing SVRL value is one of the common method in my case it was 5300RPM and was reduced to 4900RPM it can be even lower but it will affect max RPM while normal driving, probably it can sound better with 4700RPM.

for upper rpm range it doesnt give exact noise which we want, i do generally 4700 or 4800 rpm on edc16c39