Roush on order - Page 2

mrpositraction · #16 (**permalink**) 02-18-2008, 05:27 PM

As always Ken, thanks for the advise. Never thought of the 02 sensors, do they go bad that early?

FTE Ken · #17 (**permalink**) 02-18-2008, 07:19 PM

Ford used to require changing O2 sensors about every 25,000 - 50,000 miles. Problem is they are considered emissions equipment and if pressed Ford would have to pay for it the first 100K miles. So what did they do? They re-rated the sensors for 100k! They get carbon coated over time and lose their accuracy (they aren't very good to begin with). While they may be sufficient for naturally aspirated I wouldn't trust them with a blow application --- especially if you get custom tuning. One good thing about Roush's tune is they are very conservative with A/F ratios so even with older O2s you won't run into problems... but you won't have an optimally running truck either.

mrpositraction · #18 (**permalink**) 02-19-2008, 08:43 AM

Quote:

Originally Posted by FTE Ken

Ford used to require changing O2 sensors about every 25,000 - 50,000 miles. Problem is they are considered emissions equipment and if pressed Ford would have to pay for it the first 100K miles. So what did they do? They re-rated the sensors for 100k! They get carbon coated over time and lose their accuracy (they aren't very good to begin with). While they may be sufficient for naturally aspirated I wouldn't trust them with a blow application --- especially if you get custom tuning. One good thing about Roush's tune is they are very conservative with A/F ratios so even with older O2s you won't run into problems... but you won't have an optimally running truck either.

Where is the best place to buy the O2's, I looked around a little and it looks like about $100 to replace all of them, any better deals? This was a Bosh sensor off of eBay for our trucks.