I've had this going on for awhile not sure how to fix it I've tried a lot of stuff I got a new maf sensore new 02 sensores I have a k&n cold air intake obx 4-1 headers and a rrm piggyback not sure if any of those are causing it or if I can change my settings in my piggyback to fix it anything helps thanks

 

I cant remember specifically what that code is but it looks really familiar. If I recall correctly that has to do with your headers.

In more detail the headers are letting more air through your system faster and the second o2 thinks there is a problem.

Thats why you have to put the o2 extender on the 2nd cat.

So...o2 extender. RRM sells them or go to advance auto parts

 

ill try that, but ive been seein some stuff about my k&n typhoon intake like its been causing problems like missreading the air intake. think i should get a new one???? and the p0171 code is system to lean in bank one

 

No. The filter does not read air. Your MAF does that and unless you fudged it up during the install it should be good. Thats the code. O2 extender.

 

The gas regulator does not work correctly, looks for some breakage hose vacuum

 

i only have one cat and i have a extender on my second 02 sensor i did a vacuum test and it read fine, this has been going on even when i had my stock headers on

 

I have a Ralliart, but I had the code for a while also. But it was after I cleaned my intake manifold. Somehow I had a leak on my intake mani, (the bolts somehow loosened) so I would check there. I would just check everything to do with air to be sure. I spent 2 hours with my car to find my leak. Good luck to you!

 

I've just about done everything and whative found is maybe my ignition timing is off any way I can change it?

 

Scratch what I said about the header thing. I remember that code all too well now. It used to plague me during the summer but go away during the winter. After my turbo build I just got a cel and guess which one it is? That same one. I'm chalking it up to a vacuum leak.

But what led you to believe its a timing issue?

 

Well I think the guy before me had it in florida and I live in colorado so I was thinkin something might of happened with the altitude change and I did a vacuum test and it was reading late ingition timing

 

ok when i do a vacuum test and my ac in on it reads about 15 but when its off it reads normal

 

Whats your "normal" reading?

 

Its like between 18 and 20 and my tester says when ItS on 15 its a ignition timing problem and if it was at like 7 it would vacuum leak but I haven't gotten that so I'm just not getting y its only on 15 when my AC is on and normal when my AC is off