I need a cheap fix and have no emissions. These are cheaper than sims but do they really work? I plan to have the rear o2 sensors tuned out in the near future when I get my dyno tune.

>>link http://cgi.ebay.com/ebaymotors/Oxyge...QQcmdZViewItem

 

I have used sims in the past with little luck.

It is best to have the rear O2s tuned out.

 

I agree with the above reply.

 

I don't know how good those sims are in the link, but I have had my Caspers sims. for almost a year now and they have worked fine. Just keep them away from any heat source and I think they can live a long and healthy life. Tuning the rear 02s out may be the simplest method, but for those that have strict emissions, tuning the rear 02s out will simply leave a "not ready" status. Depending on your regulations, having too many "not ready" status' will cause you not to pass as well.