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      09-29-2014, 02:49 PM   #968
Island Road

Drives: 335i
Join Date: Mar 2011
Location: Boston

iTrader: (4)

Garage List
2008 335i  [5.00]
Well looks like I can unfortunately Join this party. I went to NHMS this past weekend for BMW CCA HPDE and the max high temp for the day was 87, during the entire time I did not see my temps rise above 260F. I had 4 sessions that all went well until I started receiving limp mode. My first sessions was fine, this was earlier in the morning and it had not heated up just yet. The 2nd sessions was also good but the last lap I received limpmode. The last two sessions i was doing ok until 50% into the sessions limp mode CEL.

I don't believe I had an overheating issue as my temps were always constant. The error codes I received were the common 30FE and 3100. After much searching I always come to threads that really don't provide why this is happening.
  • Some say its waste-gate sticking and apply some hightemp grease.
  • Check all vacuum lines make sure there is no leak.
  • Test the boost solenoids to make sure they are not going bad.

I have never received these errors on the street, and I have tried replicating them and it's not possible but I know it happens at high RPM mostly going from 3rd to 4th getting up to 120+ on the track.

I have plenty of air going to my oilcooer, just a complete cutout. I have a vented hood, and 7" IC running Wedge map. Unfortunately I did not do any logging that day. Looks as though this is a common issue and I am not the only one to were this happens only at the track and not on the street.

Has anybody else had these issues on the track at all and resolved them?

08 AW 6MT | MHD | Wavetrac LSD 3.46 | AE Quad | VRSF DP'S | VRSF 7" IC | DD Hood / Diffuser| Mtech Front / Rear| BMW Performance Splitters / Spoiler | Wheels 18lb 18x9 SQ | Hexon RR550 | TFT Inlets