I was thinking of doing the same thing (yanking stage 2) because of the problems I am having. When the car is cold and start it, it will idle up to 2,000 rpm like a normal cold car will, then after about 1 min, the idle drops to 1,000. If I remember right, the idle stays higher than that until the car is warmed up. Also, I am throwing that same P0172 code for the Service Engine Soon light. When I monitor the OBD II and constantly update any codes it may throw, it seems to trip the code when my idle drops suddenly and the car seems to want to stall. The idle will go back up, but the code is still tripped. There are a couple of reasons why I am thinking of going to Stage 1, or even taking the entire thing out. I can't pass emissions with a service engine light on, and I also can't pass with the idle set at 1,000 rpm like Stage 2 requires. I live in Nevada and I would think California would be the same or maybe even stricter. They don't do a sniffer test on 96 and newer cars; just the OBD II plug and analyze for any thrown codes. Then the computer runs a test on the cars idle. I would fail in both categories. Does anyone else have this problem?

 

ewww this doesn't sound good

 

does the stage 2 require any modification the MAS?

 

As far as forced induction goes... if you have an inspection on the car it will fail due to that modification anyway. Whether or not you have proper idles or no codes that part is not considered legal unless it is allowed by the state. As far as i know non of the states allow the adding of a turbo to the car legally. Some just don't have those checks on the cars and they get by. I'm not saying this as fact just stating that going turbo on a non turbo car usually steps you out of being legal unless there is some kind of Carb cert for it.

On a lighter note keep searching for the leaks... they must be there. If you pressurize the system to full boost pressure and find no leaks then you need to look at some other things like MAS modification setup... fuel system pressure... and maybe even piggy install. Once their out of the way and all good its time to get RRM involved.

I'll pm the link to this thread to ROCK so he's aware but don't dispare... just check those areas and have all the info ready for RRM if things don't get corrected. That way they can help you and figure out what's going on. Also some people have tried to run STAGE 2 setups with the 2nd cat in place and some even with the first... that's not good and the piggy isn't set up for that. You need a header/test pipe on there as well as an axle back or catback exhaust. The exhaust for that much boost/heat needs to be free flowing. Good luck guys and hang in there as it will get resolved.

 

so you do modify the MAS? i used to have something like this happen with my MAS upgrade...

 

yes

 

how is the MAS modified? this is the first i have heard of that

 

hey dookie, does your obd-II monitor say you're running rich at WOT?

 

Call me. Whatever the problem is it is fixable. There are too many stage 2s out there and too few problems. I have an idea for you.

ROAD/RACE

 

Dookie's issue is at idle.

 

oops. my bad...

 

OK..update... I am an Idiot and switched my vacuum line to the cruise control and to the stock fuel regulater thingy(?) I'm not exactly sure but anyway, switched the lines, car is running better now. I am still having some hestation at WOT..but maybe the ECU needs to relearn after running poorly for so long.... I might just unhook the battery and let it reset itself.

Dookie... My idle was stumbling horribly unitl I replaced my injector seals, got new plug wires, and pressure tested my system. Now it idles perfeclty.

 

nobody going to answer this question?

 

yay...

 

Yeah my problem, as far as I know, is at idle only. I don't have a wideband installed, so I'm not for sure. I can smell the excess fuel coming from the exhaust when it is at idle though. Boe, I re-flashed the piggy back with the program you sent me, so everything is back to what it was originally. (10.4 at idle) Can too much fuel pressure cause this? As in the FMU allowing too much pressure? Can anything to do with fuel pressure cause an over-rich condition? I'm still in Texas, so I can't really do much with the car until I get home. I will start my trip back tomorrow. By the way, driveability is still great on the highway. Gas mileage is great and in the 1,100 mile trip I took, I had one stalling issue in Albuquerque, NM which I think was caused by the high elevation. (5,500 ft.) I never once had to shift out of 5th gear to go up any hill, as the boost gauge would creep up to 0 or 1 to 2 psi to go up the hill. I just need to get this light fixed and I am good.

Also Boe about smog inspections in Nevada, there is no visual inspection at all. As long as the light is out and the idle is good, the car will pass.