NefMoto

Technical => Tuning => Topic started by: cessnas on December 09, 2018, 12:59:35 PM



Title: Throttle cut during WOT
Post by: cessnas on December 09, 2018, 12:59:35 PM
Hey!
Got an 2002 Audi A4 1.8T with an ME7.5 ECU.
I've got it tuned by some guy over Facebook who really seems to know his stuff with the ME7 ECU's.
But we're having this weird problem, if i do a WOT run in 2nd gear it boosts up to 20PSI (ish) then drops down again to 15PSI as the revs increase.
The N75 DC is set as 95% fixed because i want to run as much boost as possible with my turbo (GTX28).
If i datalog the usual parameters i can see that at 4500RPM the ThrottlePlateAngel and the ThrottlePlateAngel Requesed drops from 100% to only 32% while the AccelPedalPosition is still at 100%!

Also i've got a intermittent starting problem when the car is semi-cold (couple of hours after its been driven). Where it dosent fire at all. If i reflash the ECU it fires straight up! 

Any ideas?

Here's all the files i've got.


Title: Re: Throttle cut during WOT
Post by: vwaudiguy on December 09, 2018, 04:56:00 PM
Any links to the guy?


Title: Re: Throttle cut during WOT
Post by: fknbrkn on December 09, 2018, 05:31:09 PM
because of actual pressure more than specified+DLUL for example
maf not scaled btw
tans -36 ?



Title: Re: Throttle cut during WOT
Post by: cessnas on December 10, 2018, 04:18:54 AM
Don't have any link to him on here sorry.

The MAF should be scaled to 3 inch.
IAT was broken when I did the datalog. Replaced it but still not boosting properly.
I can post the. Bin file with the Kp. If you could take a look at it?


Title: Re: Throttle cut during WOT
Post by: vwaudiguy on December 10, 2018, 04:21:27 PM
Don't have any link to him on here sorry.

The MAF should be scaled to 3 inch.
IAT was broken when I did the datalog. Replaced it but still not boosting properly.
I can post the. Bin file with the Kp. If you could take a look at it?

A link to his FB page would be fine. Post the files, we'll take a look.


Title: Re: Throttle cut during WOT
Post by: nyet on December 12, 2018, 10:23:29 PM

The N75 DC is set as 95% fixed because i want to run as much boost as possible with my turbo (GTX28).


Find a new tuner.


Title: Re: Throttle cut during WOT
Post by: vwaudiguy on December 13, 2018, 11:10:39 AM
Find a new tuner.

Love to find out who he is.


Title: Re: Throttle cut during WOT
Post by: cessnas on December 13, 2018, 10:46:12 PM
Turned out to be Boost By Gear that was the issue. The only reason he set DC to 95 was because I asked him to. Since the previous files didn't go as planned he didn't want to do fixed DC anymore.
I'm not sure if he wants me to post his name here..
At least I think he's an great guy that has put many hours into my file, so it's his first A4 so I don't blame him


Title: Re: Throttle cut during WOT
Post by: Lost on December 14, 2018, 12:39:50 AM
Boost by gear on Me7.5?
I would like to learn that :)


Title: Re: Throttle cut during WOT
Post by: cessnas on December 14, 2018, 01:01:49 AM
There is a couple of previous posts on here that mentions Boost by gear. He says that the only enginecode with it is the APX, but apparently my A4 also has it.
Here's the post:

https://r.tapatalk.com/shareLink?url=http%3A%2F%2Fnefariousmotorsports%2Ecom%2Fforum%2Findex%2Ephp%3Ftopic%3D2897%2E0&share_tid=2897&share_fid=64425&share_type=t

Sent fra min CLT-L29 via Tapatalk



Title: Re: Throttle cut during WOT
Post by: adam- on December 14, 2018, 03:50:10 AM
70% cut in second.  OP doesn't want to do pulls in 3rd due to speed limits, etc.

Now have request I'm asking for and all is well.  AIT is fixed too.  MAF is scaled.


Title: Re: Throttle cut during WOT
Post by: prj on December 14, 2018, 07:03:01 AM
Boost by gear on Me7.5?
I would like to learn that :)

KFMDBGRG, MDBGRGA

You're welcome.