Join Date: Feb 2006
Thanked 0 Times in 0 Posts
Re: Pics of the $200 Hennessey SIMS
I could have told you guys about this. We have been using things like these for years to beat OBD2 2nd O2 codes, usually on turbo cars without cats.
Basically for each unit, you take 2 spark plug arrestors (sold at Pep Boys) and put them together. These things just happen to be of the same thread as O2 sensors. Before doing so, you have to drill through one of them, and use that as the top unit. The O2 sensor screws into it. Reason for drilling through the first one is because the O2 sensor will bottom out if you don't. What this whole contraption does is bring the O2 sensor tip farther away from the exhaust flow, and also limiting the amount of exhaust that the 2nd O2 sees. It will see enough not to trip a check engine light code.
To do this on the Jeep, I think you may need 4 pieces. 2 for each rear O2. Some cars take a 3rd one, to move the O2 even farther away from the exhaust.
Several companies out there sell pieces that electronically beat the rear O2's. Anyone have any experiences with parts like that? Makes for a cleaner install.
'03 Evo 8 (585whp on pump w/GT35R)
'07 GCSRT8 (blk, for sale)
'07 Xootr Mg Scooter (to work)
'08 Mugen Civic Si (baby hauler)