Shooter

I had my stage 1 installed for 4 days. Noticed definte difference in power, the redline came on very quickly.....However on day 4 since install I got a CEL. I got to put my new OBDII scanner to use and it found the error was P0300- Random Misfire Detected. The next morning when I left for work the CEL light wasnt on. Decided to take my car to the dealer to have it checked. I uninstalled the CZ just in case they decided to crack open the ECU box. Of course uninstalling the CZ caused the CEL code to be erased and generated a new code, DSC error. They ran a full diagnostic and found everything okay but told me to not mess with the DSC button saying that probably caused the CEL. Well i didnt argue but knew that wasnt why.

Anyway, I reinstalled the CZ yesterday and did some Gtech runs with it off and then one with it on. Idle was still awful and my brother who is more of an engine expert than me said it sounded like it was misfiring again and advised me to turn the CZ off. So at this point it is off and idling fine. However getting the CEL with it on scares me.

I've emailed CZ and am waiting for a response....Anyone else get a CEL with stage 1 installed????

dannobre

iTrader: (3)

Mine gave me a MAF input error....cleared and never came back.
I am going to call Maurice tomorrow too. Idle is very rough and it hesitates at 6.5 to 7K. I have the CanScan too. we should try and compae values in a meaningful way and see if we can come up with a common variable that is causing some cars to not be as happy as others with the CZ unit. Anyone else have a CZ and a Canscan think it's worth some work to figure this out???

epitrochoid

we all gotta make our idle problems know to Maurice...I was probably the first to address it to him, and it was kinda brushed off as being a K flash problem,

SMigneco

I posted most of this in another thread but this thread seemed more appropriate:

When I first installed the CZ, I received the CEL after 3 days. I received the CEL on the way to get my springs/shocks installed (which, by the way is the best mod so far). Anyway, after getting my car back the light was off for 2 days (maybe 1 day) and then it came back on.

I did not want to pull my K&N (very difficult for me) so I pulled the CZ because it is much easier. CEL went off. Then I though about it for a few days and decided to try something. I put the CZ back in. After it was in I waited an hour with the battery disconnected. Started the car and cleared the DSC. Turned off the car. Turned the key to ACC and reset the PCM by doing the 20 brake tap and confirmed my oil needle swept. Since doing this I have not received the CEL and it has been a couple of days.

My idle is fine as long as the car is cold. Once the car is run hard for 10 to 15 minutes then the idle is horrible. I really didn't notice it at first because I honestly did not run the car hard for very long. My commute to work is less than 10 minutes.

I fear burnt coils because of what happened to Genom and we are both in FL. I also really hope that there is some way CZ can fix the idle issue. It has not stalled yet but it sounds like it right on the verge of stalling.

Do you guys notice the rough idle when the car is cold? I thought the CZ did not kick in until 2,000 rpm. Am I correct? If so, then there is obviously something wrong because the CZ should not affect the idle. Perhaps everyone's idle is fine until the first time the CZ kicks in. Say you start your car and let it warm up for 10 minutes without going over 2,000 rpm. Is the idle ok? If so, then is it possible that the CZ is kicking in (for the first time) and, for lack of a better term: not turning itself off? I am just speculating here, but obviously something is not right.

I have decided to keep the unit in the hopes that CZ can get these issues straightened out. Maybe we all should invest in the software/cable. Perhaps CZ should start including those as part the of Stage 1 purchase because it seems that there are so many issues now that getting the cable is almost a must. He can then setup his ftp site with different maps for different climates and sea levels. That to me seems like the only way he can continue selling the stage 1's without getting them all returned after people see the rough idle and minimum hp gains. I have put my trust in CZ by not returning the unit and I really hope I do not get let down.

Shooter

SMigneco,

yeah i get the same regarding idle. When i first turn on the car it idles perfect. Once i start driving and then go back to idle, it idles awful and continues to idle awful the rest of the time i am driving. When i shut the car off and then turn back on it idles fine until i start driving and it then idles rough again.

I am perplexed as my understanding is the same as yours....cz only kicks in at 2k. Idle should be affected but it seems its logical that the unit is not turning itself off based on the experience i am having....

I just would like to hear something from maurice and co about what they think is happening and/or what they are trying to do to fix it.

SMigneco

Shooter, that is good information. If everyone else experiences the same thing (smooth idle until CZ is run) then we may be onto something. I am following about 4 different thread's on this rough idle issue and have not seen a response from CZ yet. I really hope they respond soon. At a very minimum to just let us know that a solution is in the works.

How has the weather been in NC? Perhaps weather also has something to do with it? It has been in the 90's here.

If other people with the CZ unit and rough idle can chime in to let us know if they also only experience the rough idle ONLY after running the car above 2K rpm that would be great. The more info we gather the better.

Speed Racer

SMigneco,

Your rough idle may have more to do with the K&N screwing up the airflow around the MAF sensor. You may want to try the Stage 1 without the K&N and see if the idle returns to normal.

Shooter

The weather here has been in the 80's and the humidity hasnt been that high until the last few days (its been raining off and on since Sun). But i experience this on days that werent hot at all and even in the evening after the sun goes down so I am pretty confident its not heat/weather related.....

If I get a chance tonite I'll try to post a graph of RPM's at idle before, during and after stage 1 so you can see the effect....

guy321

I got the random misfire code after running CZ for months..

I also got it once before I got CZ..

I took it in with CZ installed but turned off. THey didn't see anything, they just replaced the plugs which they said were fouled.. I think they were just fouled because I drove around for 3 hours at 6mph..

leegina

I also have the rough idle but it appears to happen after the car reaches normal operating temp then when I idle you can feel and hear the rough idle.

The_Bean

Mine seems to come on at normal operating temp as well.

olddragger

iTrader: (3)

guys,
thats one of the puzzles with this car. Ive had my cz 1.1 in with the m flash and i have no problems at all. Cocerned about the heat but thats another subject. I do remember reading that it was recommended that you do not but an aftermarket intake on with the cz unit because it could cause a rough idle among other things.
and all have m flash right? running 93 octane right?
good luck guys. I know canzoomer will address the issue.
olddragger

SMigneco

I understand the issue's that have been documented with Stage 1 and an intake however, it does not make sense that my idle is fine until the car has warmed up. If the issue was with the intake, wouldn't my idle be bad as soon as the car is started?

Prior to stage 1 my idle was fine with the intake. With stage 1 installed my idle is fine until the car is run hard. I have noticed lately that my idle actually seem a little better. Only time will tell, but for the last few days it has been slightly better.

Shooter

Smigneco, I agree. I seemed to get alittle better idle after a few days but then i got the cel for misfire detection. So i turned off the stage 1. I have it back on again. only time will tell if idle gets better and if that cel comes back....

SMigneco

Shooter, did you reset your pcm after turning the stage 1 back on? Since I did that, I have not gotten the CEL again and my idle has improved slightly.

What I did was: disconnect the battery for an hour to clear PCM, installed stage 1, turned car on and cleared DSC, immediately turned car off, turned key to ACC position and tapped the brake 20 times. I confirmed the oil needle did the sweep.

I think this has helped because it forces your stock PCM to learn from scratch and it is learning with the stage 1 installed, so what it would normally think are misfires it may now perceive as normal.

Just speculation but I am going on about 5 days now with no CEL. Prior to doing this I got the CEL after 1 or 2 days with stage 1 installed.