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Title: Throttle Cut Post by: ejg3855 on July 03, 2013, 08:45:48 PM ME7.5 Hybrid F23 (frankenturbo), MAF scaled for R32 size. MBC set to 25psi on E85.
I am seeing throttle cut and I think I have it narrowed down to either of two things. Boost Actual > Desired , althought I thought I corrected this by scaling LDRXN to over the map limit . (http://i101.photobucket.com/albums/m56/ejgsjeep/LDRXN_zpse1c69703.jpg) (http://s101.photobucket.com/user/ejgsjeep/media/LDRXN_zpse1c69703.jpg.html) I highlighted what I think is the start of the throttle cut. Title: Re: Throttle Cut Post by: nyet on July 03, 2013, 10:24:06 PM Please don't post excel output. Post the original CSVs
xls is unparsable. Title: Re: Throttle Cut Post by: Matt@GTS on July 04, 2013, 07:14:47 PM Look at your requested load
Title: Re: Throttle Cut Post by: black on July 05, 2013, 12:48:44 AM Title: Re: Throttle Cut Post by: ddillenger on July 05, 2013, 01:24:54 AM Why are you using an MBC?
Title: Re: Throttle Cut Post by: 316LV on July 05, 2013, 04:33:46 PM Look at your requested load This ^. I had the same issue with too high a requested load in a tune here (HS that Gonzo applied some quick and dirty repair to). It would cut the throttle at 3000 rpm under high load. Smoothed out the requested to take a hump out of the map @ that area and it worked OK after that. Ditched it in favour of working up my own from scratch, but it did correct the problem with that particular tune. I echo the poster above me about the MBC. Eliminate that and tune for your desired results with the N75. I can run to the limits of the MAP with it no problem. Unless you are working a small turbo like the K03 really hard, that should be good enough for most applications... Title: Re: Post by: ejg3855 on July 07, 2013, 06:06:45 PM I can exceeded and hold higher than map limit, turbo is roughly size of a gt28rs and I've seen no problem holding 25 to redline. There is all sorts of problems with the waste gate on these units which is why I chose the MBC over the n75.
I'll lower and smooth out ldrxn, but I thought the hierarchy of the ecu would follow kfmiop/irl if it never touched ldrxn values Title: Re: Throttle Cut Post by: Matt@GTS on July 07, 2013, 08:25:34 PM F23 is not the size of a GT28RS.
Its bigger than a GT28R though. Title: Re: Post by: ejg3855 on July 07, 2013, 09:30:58 PM I' going to make some changes today, will report back.
Title: Re: Throttle Cut Post by: ejg3855 on July 08, 2013, 04:58:34 AM Good Read if you can sort out the bull shit on why I run a MBC
http://forums.vwvortex.com/showthread.php?6081255-Frankenturbo-actuator-testing Title: Re: Throttle Cut Post by: nyet on July 08, 2013, 09:09:12 AM BTW, anything you can do with an MBC, you should able to coax the LDRPID to doing, if you are under the MAP sensor limit. You may want to try the 5120 hack..
Also, please don't post excel files. Title: Re: Throttle Cut Post by: littco on July 08, 2013, 10:09:00 AM ME7.5 Hybrid F23 (frankenturbo), MAF scaled for R32 size. MBC set to 25psi on E85. do you actually make anymore power running 25psi over running 21psi at redline? I am seeing throttle cut and I think I have it narrowed down to either of two things. Boost Actual > Desired , althought I thought I corrected this by scaling LDRXN to over the map limit . (http://i101.photobucket.com/albums/m56/ejgsjeep/LDRXN_zpse1c69703.jpg) (http://s101.photobucket.com/user/ejgsjeep/media/LDRXN_zpse1c69703.jpg.html) I highlighted what I think is the start of the throttle cut. Title: Re: Throttle Cut Post by: ejg3855 on July 09, 2013, 03:44:56 AM BTW, anything you can do with an MBC, you should able to coax the LDRPID to doing, if you are under the MAP sensor limit. You may want to try the 5120 hack.. Also, please don't post excel files. Thats cool about the MBC functionality of the N75, and I saw your first post about xls files and dooley noted. Title: Re: Throttle Cut Post by: ejg3855 on July 09, 2013, 03:45:40 AM do you actually make anymore power running 25psi over running 21psi at redline? I anticipate that it should net gains especially with E85's ability to resist detonation. Title: Re: Throttle Cut Post by: Matt@GTS on July 09, 2013, 07:52:44 PM do you actually make anymore power running 25psi over running 21psi at redline? Yes, since the 1.8T flows like crap. |