Cold start overdriven hpfp rattle fix needed

[AzNdevil]

So @V8bait modified my tune and she started like a dream and no more rattle with cold start deleted .

She fired up perfectly first go without any stumbles or hesitation.

Thanks AzNdevil you are a bloody legend.

glad it worked out

attached here for ikm0s peeps

Don't trust the Fuel Pressure Target (Homo-Cold)
I can't make sense of it and I didn't look into it further since you guys managed to get the pump to shut up after playing with the Coolant Temp Thresholds....

 

[KClemente]

Thanks to @AzNdevil for finding the correct maps. Here's an I8A0S xdf for them.

 

[Benji335i]

Any IJE0S xdf for this issue I’ll need it for BQ

 

[KClemente]

@Benji335i here you go.

 

[AzNdevil]

heres one for ina0s, need @V8bait to test and get back to us to see it works...
values look comparatively the same so im confident enough to release it as is

 

[martymil]

Love this website, this the type of comradery that set it apart from the rest.

 

[doublespaces]

Love this website, this the type of comradery that set it apart from the rest.

It helps when the admin is an Enthusiast and not a socal prick.

 

[martymil]

Anyone can help me out need the Ikmos VCV tables including current request to pwm request, flow to current request, max current, and the respective breakpoints

 

[AzNdevil]

Anyone can help me out need the Ikmos VCV tables including current request to pwm request, flow to current request, max current, and the respective breakpoints

i think these are available on vtt's site to support shotgun tuning
lmk otherwise...i can look into them for you

 

[martymil]

not for Ikmos, thats only for cold start rattle I believe

 

[TheFixer]

The hpfp can be noisy? I have a lot of rattle noise on start up. After reading this thread I wonder if my hpfp is making all the noise i am hearing on start up. I thought i have a noisy air pump.

 

[martymil]

If its overdriven in anyway way it will be noisy as it's part of cold start which has to be turned off

 

[doublespaces]

If its overdriven in anyway way it will be noisy as it's part of cold start which has to be turned off

The hpfp chatter fix can eliminate 90% of it. The problem is there is an initial startup that causes it to chatter as well and I believe someone said the only way to eliminate that would be to play around with the voltages which at the time nobody felt like doing.

 

[martymil]

Mine was very quiet and eliminated all noise once the fix was applied.

 

[JohnDaviz]

i seem not find information about how to fix it. Anyone care to explain what needs to be done?

 

[martymil]

Its in the tune

 

[JohnDaviz]

In which tune?

 

[Traf]

In which tune?

There are multiple tables available to reduce the current applied to the VCV during startup, and the time frame during which this current is applied.
Everything is available here on SS.

 

[JohnDaviz]

I have all the tables. I was asking for advice how to work on these tables as i have no experience. I did not find any info on tuning direction.

 

[Traf]

Reduce the time during which the startup current is applied for example ?