Is this boost activity normal??

ttbmer · 10-18-2010, 05:44 PM

my mods are JB3 1.4 map 4
half 100oct and half 91oct
BMS DCI intake
and the gauge

today i installed my P3 boost gauge and went out to do a couple of runs. the weather is 70F and the cars temp around 230f. on the first 3 gears my boost went up 14psi-15psi or so at 6k, but when passing 6k to redline the boost drop to 7 or 8 psi.
i know that on STIs is normal for the boost to taper down when reaching redline on stock turbo but i dont know if its the same for 335s

enrita · 10-18-2010, 06:50 PM

yes taper is normal and please update your maps you are like 1 year behind.

ttbmer · 10-18-2010, 07:28 PM

Cool thank u I feel much better. I just got that jb3 so don't know how..... I guess I have to buy a USB special cable from burgertuning that's like 30$ I believe right! And do that on the comp. Or do I have to pay to upgrade too?? Thanks again

10-18-2010, 05:44 PM	#1
ttbmer Lieutenant Colonel 70 Rep 1,943 Posts Drives: space gray on black 07 335i Join Date: Jul 2010 Location: las Vegas nv iTrader: (15)	Is this boost activity normal?? my mods are JB3 1.4 map 4 half 100oct and half 91oct BMS DCI intake and the gauge today i installed my P3 boost gauge and went out to do a couple of runs. the weather is 70F and the cars temp around 230f. on the first 3 gears my boost went up 14psi-15psi or so at 6k, but when passing 6k to redline the boost drop to 7 or 8 psi. i know that on STIs is normal for the boost to taper down when reaching redline on stock turbo but i dont know if its the same for 335s
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10-18-2010, 06:50 PM	#2
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	yes taper is normal and please update your maps you are like 1 year behind. __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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10-18-2010, 07:28 PM	#3
ttbmer Lieutenant Colonel 70 Rep 1,943 Posts Drives: space gray on black 07 335i Join Date: Jul 2010 Location: las Vegas nv iTrader: (15)	Cool thank u I feel much better. I just got that jb3 so don't know how..... I guess I have to buy a USB special cable from burgertuning that's like 30$ I believe right! And do that on the comp. Or do I have to pay to upgrade too?? Thanks again
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