Quote:
Originally Posted by Sophisticated Redneck
Lucas octane booster is available at any Walmart, Autozone, or Orielys and is very effective, Royal Purple works excellent too. Boostane is another excellent choice. I have data logged them all and all show timing increases during boost. I have continuously run octane boosters for nearly 70k miles without issue (long term use not recommended if your engine still has its cats)
As for your codes, they are low boost codes. Start with the basics (check for any leaks in ducting, ccv tubes, vacuum tubes. Check your wastegates for excessive wear and your pressure converters. At 110k my guess would be cracked ccv tubes, cracked vacuum lines, worn wastegates (you can adjust them somewhat).
If all those check out, look into your vacuum pump, I believe they are still discounted from bmw from 500 to 70 dollars so might want to replace it just for the hell of it. I did mine just because it was so cheap.
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Quote:
Originally Posted by Sophisticated Redneck
Lucas octane booster is available at any Walmart, Autozone, or Orielys and is very effective, Royal Purple works excellent too. Boostane is another excellent choice. I have data logged them all and all show timing increases during boost. I have continuously run octane boosters for nearly 70k miles without issue (long term use not recommended if your engine still has its cats)
As for your codes, they are low boost codes. Start with the basics (check for any leaks in ducting, ccv tubes, vacuum tubes. Check your wastegates for excessive wear and your pressure converters. At 110k my guess would be cracked ccv tubes, cracked vacuum lines, worn wastegates (you can adjust them somewhat).
If all those check out, look into your vacuum pump, I believe they are still discounted from bmw from 500 to 70 dollars so might want to replace it just for the hell of it. I did mine just because it was so cheap.
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So far so good with a nice good shell fill up 93 back to normal life again oh I went over everything I did a complete check of the vehicle it was driving me bananas thank God everything's GOOD! In one week ,I put about 400 miles on it so far back to ICBM M-ode lol .