2.0 HDI looses power at 3k RPM's

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2.0 HDI looses power at 3k RPM's

Postby MothaHDI » Thu Aug 02, 2018 3:15 pm

Hi!
My Pug 406 RHY, when he gets at 3k rpms the sound of the engine changes and i feel a power loss... I have dataloged some basic parameters and i saw that Injection is cutted.
On the hditunning website it says that at 3k rpms the pre-injection ends and maybe thats the issue?

I remaped my car to a stage 2 with Intercooler, MBC, etc.. and i didnt change anything with pre-injection..

Changes that i make:

-Torque limiter (about 75mm3 IQ) ;
-Smoke Limiter (16 AFR)
-Soi and Duration (to 1450 bar and a max of 80mm3 iq)
-Rail pressure (1450bar)
-The car is non turbo controlled so didnt change any boost maps
- etc...

Thx :angel:

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Re: 2.0 HDI looses power at 3k RPM's

Postby Deman » Thu Aug 02, 2018 8:07 pm

All right, there is no sense at high speed in the preliminary. Much from your settings.

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Re: 2.0 HDI looses power at 3k RPM's

Postby jtdpow » Fri Aug 03, 2018 2:12 pm

Deman wrote:All right, there is no sense at high speed in the preliminary. Much from your settings.

+1

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Re: 2.0 HDI looses power at 3k RPM's

Postby kapi306 » Fri Aug 03, 2018 2:27 pm

Ive got a same problem. :)

Here is my Eoi and Soi table.

I dont know what is the best eoi for hdi 8v engine.
Someone has experience with this?
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Re: 2.0 HDI looses power at 3k RPM's

Postby MothaHDI » Sat Aug 04, 2018 1:31 pm

Deman wrote:All right, there is no sense at high speed in the preliminary. Much from your settings.


i'm sorry but i cant understrand what you're saying :( Can you explain a little bit better? (I cant understand english that good)

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Re: 2.0 HDI looses power at 3k RPM's

Postby Deman » Sat Aug 04, 2018 9:31 pm

you need to watch your settings, to answer the question.
I did hdi and did not notice such problems.

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Re: 2.0 HDI looses power at 3k RPM's

Postby kapi306 » Sun Aug 05, 2018 9:20 am

Hi.

Here is mine, I think it's similar to MothaHdi.
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Re: 2.0 HDI looses power at 3k RPM's

Postby Deman » Tue Aug 07, 2018 8:37 pm

first return the value of the axis, because it is common for many other maps. change only one last value of the axis. SOI is aggressive.

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Re: 2.0 HDI looses power at 3k RPM's

Postby MothaHDI » Tue Aug 07, 2018 11:05 pm

Deman wrote:first return the value of the axis, because it is common for many other maps. change only one last value of the axis. SOI is aggressive.


Hi! So, me and Kapi have the same SW version and i tried some of its stuff like the SOI limiter and smoke limiter maps and now the car feels really great!!

What i really cant understand is the best values for EOI, so many people say to go after 20atdc and some to go low as possible

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Re: 2.0 HDI looses power at 3k RPM's

Postby kapi306 » Sat Aug 11, 2018 1:38 pm

Deman wrote:first return the value of the axis, because it is common for many other maps. change only one last value of the axis. SOI is aggressive.


Ok. I understed it but this is why it is a problem? Soi is agressive? I tried less soi = more eoi and i feel lost power.
With r65 pump i cant continue to increase rail pressue to reduce injection time.

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