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Title: throttle is closing when pressure goes above 2.55 bar absolute. Rs3 8v.1 2015 Post by: Piar on September 13, 2019, 01:06:22 AM Hi Everyone!
So we fit big turbo to rs 8v.1 and i cannot rise the boost above 2.55 bar(absolute) because throttle is starting to close. as i know the problem is in maximal allowed boost which content in program code. also i have found explanation how target throotle position is calculated in med 17 plsol_w = pssol_w / vpsspls_w. when vpsspls_w> 0,95 target throttle will be=(pssol_w - plgru_w) /(plxs_w-plgru_w) plsol_w target boost pressure pssol_w boost pressure before throttle vpsspls_w is the required pressure ratio from the boost pressure control plgru_w ambient pressure plxs_w maximal target boost pressure so the question is if anybody can help me to cope with this problem? ready to buy working solution. But please don't even try to offer map sensor rescaling In attachment you can find current file where boost is 2.50 bar straight and throttle is opened 100%. car is making 510 whp on 98 ron+ wmi injection Title: Re: throttle is closing when pressure goes above 2.55 bar absolute. Rs3 8v.1 2015 Post by: 3ri on September 14, 2019, 02:03:34 AM Hi Everyone! So we fit big turbo to rs 8v.1 and i cannot rise the boost above 2.55 bar(absolute) because throttle is starting to close. as i know the problem is in maximal allowed boost which content in program code. also i have found explanation how target throotle position is calculated in med 17 plsol_w = pssol_w / vpsspls_w. when vpsspls_w> 0,95 target throttle will be=(pssol_w - plgru_w) /(plxs_w-plgru_w) plsol_w target boost pressure pssol_w boost pressure before throttle vpsspls_w is the required pressure ratio from the boost pressure control plgru_w ambient pressure plxs_w maximal target boost pressure so the question is if anybody can help me to cope with this problem? ready to buy working solution. But please don't even try to offer map sensor rescaling In attachment you can find current file where boost is 2.50 bar straight and throttle is opened 100%. car is making 510 whp on 98 ron+ wmi injection Exactly the same problem as I am having, anyone out there who has a fix? Title: Re: throttle is closing when pressure goes above 2.55 bar absolute. Rs3 8v.1 2015 Post by: gt-innovation on September 14, 2019, 01:42:18 PM Any of you can log pvds_w ?
The reason i am asking is this.... At the end of LDRPLS plsol and pvds_w is formed. PFLASH:802096A4 loc_802096A4: ; CODE XREF: LDRPLS_10ms+418↑j PFLASH:802096A4 ; LDRPLS_10ms+41E↑j PFLASH:802096A4 lea a15, [a0]-0x6A64 ; plbasflt_w "Gefiltertes plbas_w bei Getriebe- oder ASR-Füllungseingriff" PFLASH:802096A8 ld.hu d0, [a15]0 PFLASH:802096AC lea a15, [a0]-0x6A54 ; plxs_w "Maximaler Soll-Ladedruck" PFLASH:802096B0 ld.hu d15, [a15]0 PFLASH:802096B4 min.u d0, d0, d15 PFLASH:802096B8 lea a15, [a0]-0x6A56 ; plufmn_w Minimaler Druck nach Luftfilter PFLASH:802096BC ld.hu d15, [a15]0 PFLASH:802096C0 max.u d15, d15, d0 PFLASH:802096C4 mov16.a a15, d13 PFLASH:802096C6 sh32 d0, d15, #-8 PFLASH:802096CA st16.h [a15]0, d15 PFLASH:802096CC sh16 d15, #-1 PFLASH:802096CE lea a15, [a0]-0x5E2F ; plsol PFLASH:802096D2 st16.b [a15]0, d0 PFLASH:802096D4 lea a15, [a0]-0x6A52 ; pvds_w Solldruck vor Drosselklappe (Wertebereich von 0...5120hPa) PFLASH:802096D8 st16.h [a15]0, d15 PFLASH:802096DA ret16 PFLASH:802096DA ; End of function LDRPLS_10ms plxs_w becomes 8 bit for plsol and as you see it is shifted by -1 and saved to pvds_w. LDRPLS_main on page 689 on the FR. Title: Re: throttle is closing when pressure goes above 2.55 bar absolute. Rs3 8v.1 2015 Post by: Piar on September 15, 2019, 09:32:02 PM I have logged it
and maximal value i have seen is 2559,92 Title: Re: throttle is closing when pressure goes above 2.55 bar absolute. Rs3 8v.1 2015 Post by: gt-innovation on September 16, 2019, 06:24:33 AM I have logged it and maximal value i have seen is 2559,92 Would be good to post part of the log you did here to ensure that we are on the right path. sh16 d15, #-1 (bitwise shift right) is essentially converting the result from min.u d0, d0, d15 to a 0-5120 plausible value... so there is a reason that i am asking the actual value of pvds_w... |