2.0 TFSI Manifold Flap delete & RS4 Injectors

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Topic: 2.0 TFSI Manifold Flap delete & RS4 Injectors (Read 39024 times)

BenR

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	2.0 TFSI Manifold Flap delete & RS4 Injectors « on: October 05, 2013, 09:31:17 PM »

Hi Guys, Wondering if anyone has had a similar issue.

Have removed the manifold flaps. Have RS4 injectors and a GTX3076 Turbo. Fueling is all ok once warm. LTFT and STFT ar at about 2%.

Have tried raising the warm up enrichment tables with no luck.

Any ideas?


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hammersword

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	Re: 2.0 TFSI Manifold Flap delete & RS4 Injectors « Reply #1 on: October 06, 2013, 04:07:30 AM »

I bet that you haven't calibrated well the injectors lag. It is common issue with RS4s and cold start

Did you removed the flaps operation from software also?


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BenR

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	Re: 2.0 TFSI Manifold Flap delete & RS4 Injectors « Reply #2 on: October 06, 2013, 05:48:37 AM »

Yes removed the flap operation with no change. What table do you mean for injector lag?


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BenR

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	Re: 2.0 TFSI Manifold Flap delete & RS4 Injectors « Reply #3 on: October 07, 2013, 01:54:45 AM »

Anyone?


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hammersword

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	Re: 2.0 TFSI Manifold Flap delete & RS4 Injectors « Reply #4 on: October 07, 2013, 02:28:57 AM »

You have 3 posts in this forum asking only.

You will not find anyone giving you directly answer


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BenR

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	Re: 2.0 TFSI Manifold Flap delete & RS4 Injectors « Reply #5 on: October 07, 2013, 02:52:46 AM »

So whats the point of this forum then? Im part of many forums. I provide a huge amount of knowledge to others learning, but it seems like its hard to get the favor returned on a forum im not regularly apart of. How sad!
I guess i will have to look elsewhere.


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Time 4 Rebuild

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	Re: 2.0 TFSI Manifold Flap delete & RS4 Injectors « Reply #6 on: October 07, 2013, 03:32:23 PM »

Are you having starting issues or running like crap after it starts?


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BenR

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	Re: 2.0 TFSI Manifold Flap delete & RS4 Injectors « Reply #7 on: October 07, 2013, 03:40:25 PM »

Hi, only when the car first starts. Everything was fine but removing the manifold flaps with these injectors isnt going to well. Once the car is warm its perfect. Although i need to fine tune injection angle. Thanks


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RaraK

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	Re: 2.0 TFSI Manifold Flap delete & RS4 Injectors « Reply #8 on: October 08, 2013, 09:34:56 PM »

Quote from: BenR on October 07, 2013, 03:40:25 PM

combustion differences, fuel pressure differences, injection angle differences

make sure you remove the flaps properly as well

I need not touch cold start fueling at all for perfect start with HEP manifold on RS4 injectors

Hint: Look at the RS4 file a little bit and study LBKSOL, RKTI and AWEA in FR to understand what you need to do.

As Fotis said, few other discussions on these forums in the past you should look at, and it should all tie together and make sense then.


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BenR

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	Re: 2.0 TFSI Manifold Flap delete & RS4 Injectors « Reply #9 on: October 08, 2013, 09:41:51 PM »

Hi Rarak,

Thank you for your kind reply. I will check the RS4 files out i have and look at the other maps. I may have missed turning off 1 codeword for the manifold flaps. CWALBK, CWBGLBK, CWLBK is off. Maybe i also need CDKLBKP to be set to 0 also.

Ill report back soon.


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BenR

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	Re: 2.0 TFSI Manifold Flap delete & RS4 Injectors « Reply #10 on: October 10, 2013, 08:11:44 PM »

Ok so lowering the injector angle tables by -5% was a great start. All cold start misfires whilst driving are gone. Just got to work on start up a little more. Lambda etc looking great, forgot to lower my rail pressure in the early rpm range compared with the K04 turbo so that got rid of some black smoke too.


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hammersword

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	Re: 2.0 TFSI Manifold Flap delete & RS4 Injectors « Reply #11 on: October 11, 2013, 04:52:42 PM »

This is what I say Ben. I like to see people in progress! Now you start learning on these, keep up the studying and we are here to provide help.
If we gave you direct answer then you will not learn!


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hammersword

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	Re: 2.0 TFSI Manifold Flap delete & RS4 Injectors « Reply #12 on: October 11, 2013, 04:56:59 PM »

Also you have to make the ECU understand that your TFSi is not equipped with flaps anymore. You are doing this correct!

For RS4 tuning as we said in other threads, if you have fully understand D.I. engines and if you have all the necessary maps in MED9, then it is so simple to fix them as a tranformer

All info about injector characteristics there are in RS4 ori file, as Taylor said also

cheers,
Fotis


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BenR

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	Re: 2.0 TFSI Manifold Flap delete & RS4 Injectors « Reply #13 on: October 11, 2013, 09:47:44 PM »

Thanks Fotis,

I am happy with how the car is running now, thanks for the help. i cant seem to get rid of the Runner flap fault code though, have turned everything off and still get it.


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n0ble

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	Re: Re: 2.0 TFSI Manifold Flap delete & RS4 Injectors « Reply #14 on: October 16, 2013, 10:14:34 PM »

Question..... why use RS4 injectors when S3 injectors have abhigher flow rate and have the correct spray pattern??

Rs4 injectors appear to run richer than what you actually think they are, this us due to the fuel not burning correctly and getting lots of it out the exhaust ports.... then your lambda tells you your running rich.....


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