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Title: Boost vs load Post by: totti on November 03, 2018, 11:12:02 AM Hi,
I've tried to tune my 1.8t Octavia(AUQ). The current config seems ok, but at the log file there are some not so nice curves. The boost is nearly what I want(max 1.3 bar) @4000 the actual boost is higher a little than desired boost. The strange curve for me the load. @4300 it falls down. Does this happen because of the higher boost? I've uploaded the log, ldrxn, kfmirl, kfmiop. Thanks for the help Title: Re: Boost vs load Post by: ulek3pl on November 04, 2018, 09:48:54 AM You must play with N75 pilot maps to make it ideal. Try make log on 5th gear.
Title: Re: Boost vs load Post by: nyet on November 05, 2018, 09:35:15 PM You must play with N75 pilot maps to make it ideal. Try make log on 5th gear. LOL. No. You've maxed out your turbos. What did you expect? Load will fall off quickly if boost drops while rpm is rising. Title: Re: Boost vs load Post by: prj on November 06, 2018, 09:28:43 AM You must play with N75 pilot maps to make it ideal. Try make log on 5th gear. ME7 does not have N75 pilot natively, it's not EDC15.It has an I limiter. Title: Re: Boost vs load Post by: Kompiesto on November 07, 2018, 01:12:57 AM Too much boost. In my opinion you have too high temp around 1000C. Ecu doing mixture too rich and reducing load/boost to prevent damage your engine/kat. Lower timing, lower boost or add more fuel earlier to reduce exhaust temp. Do you have catalityc converter? Ori maf (you are near max)?
Title: Re: Boost vs load Post by: contrast on November 07, 2018, 03:29:07 AM Too much boost. In my opinion you have too high temp around 1000C. Ecu doing mixture too rich and reducing load/boost to prevent damage your engine/kat. Lower timing, lower boost or add more fuel earlier to reduce exhaust temp. Do you have catalityc converter? Ori maf (you are near max)? Less timing increases EGT lol. Title: Re: Boost vs load Post by: Kompiesto on November 07, 2018, 05:30:47 AM Sorry, for this situation better is advance of course to generate power not heat.
Title: Re: Boost vs load Post by: totti on November 10, 2018, 06:34:02 AM Too much boost. In my opinion you have too high temp around 1000C. Ecu doing mixture too rich and reducing load/boost to prevent damage your engine/kat. Lower timing, lower boost or add more fuel earlier to reduce exhaust temp. Do you have catalityc converter? Ori maf (you are near max)? Yes I have catalyc converter. I have 60mm inner size downpipe between turbo and cat. Maf is ori. Title: Re: Boost vs load Post by: totti on November 10, 2018, 06:39:01 AM LOL. No. You've maxed out your turbos. What did you expect? Load will fall off quickly if boost drops while rpm is rising. I don't understand the sentence. I cannot see boost drops before the load fall. Or the problem is that the turbo cannot reach the desired boost in time? Title: Re: Boost vs load Post by: nyet on November 10, 2018, 09:39:46 AM I cannot see boost drops before the load fall. Or the problem is that the turbo cannot reach the desired boost in time? Load follows boost, which is maxed out. Unless you are talking about those little load ripples, which you can likely ignore, unless you are feeling misfires or hesitation there. Title: Re: Boost vs load Post by: nyet on November 10, 2018, 09:46:49 AM Possible misfires
Title: Re: Boost vs load Post by: totti on November 10, 2018, 11:27:54 AM Possible misfires Thank you very much. I don't feel any hesitation when I drive the car. Just checking the log and it shows that the load has some little ripples and paralell the lambda go up and down, but the required ratio is still the same. What can I check? Spark plugs are new. Title: Re: Boost vs load Post by: totti on November 10, 2018, 11:42:45 AM I did some modifications. I still have this load ripples. The strange thing for me that every run this ripple is between 4250 és 4800rpm. Could it be because of misfire?
Title: Re: Boost vs load Post by: nyet on November 10, 2018, 06:27:50 PM I did some modifications. I still have this load ripples. The strange thing for me that every run this ripple is between 4250 és 4800rpm. Could it be because of misfire? Likely cam changeover. Log VVT if you want to be sure. Title: Re: Boost vs load Post by: totti on November 11, 2018, 10:21:27 AM Likely cam changeover. Log VVT if you want to be sure. Can you help which is the VVT variable at me7logger? Thanks Title: Re: Boost vs load Post by: vwaudiguy on November 11, 2018, 01:53:46 PM Can you help which is the VVT variable at me7logger? Thanks Open ME7L and type "cam" into the search bar. Title: Re: Boost vs load Post by: nyet on November 11, 2018, 03:31:15 PM Sigh.
Code: $ grep -ai cam me7_alias.map |