why would i have miss at idle? all the plugs and wires are good. no loose connections. it seems to get better when i unplug the maf and the iat sensor? what is the deal. is it all in the tune? wanting to dyno this upcoming weekend so what do you guys think

 

Sounds like the tune.Also the MAF could be going out as well. Have you tried tapping the MAF while the car is idling to see if the miss occurs.

 

lean idle?

 

havent had any tuning software hooked up yet. im not sure what the af was at last tune at idle. hoping to get something figured out the end of this week. anything else it could be? all grounds appear to be good. any other ideas. i mean going down the road its great and at wot it doesnt miss a beat at just 5 psi. time will tell. i was just wondering if anybody else has had this problem

 

ps it smells real rich at idle. well i mean you have to shower everytime you get out of it, lol

 

I'm betting it's your maf too. I had an aftermarket on mine and it did the same thing you're describing. As soon as the stock one went back on, it smoothed out nicely and wasnt at all so rich.

 

its a stock maf, could it need cleaned?

 

Is there any reason it might need a cleaning?

If the car smells rich you might be fouling out plugs.

Too bad you don't have a MAF Translator around, those were fun for those kinds of problems back when I was a 422ci na setup... I could just mess with the base setting.

 

now that you say that no. i was pulling through it last time not blowing through it? but it only misses when its warm. when its cold it does fine. only when it starts to warm up do you notice it?

 

Probably MAF KAOS, especially if it only misses warm, because when it's cold it's not going off of the MAF.

I just realized I left that wide open, but when it's cold it's going off of the open loop table, so it's basically the same as your last setup. However, when it's warm it's going off of the close loop table which is basically opposite of your last setup. Alex should be able to reconcile that for you.

 

seems like when you unplug the maf and iat it stops. its still there some but not as noticable. he was thinking it could also be an o2 sensor i dunno. i just want to get it tuned and see how it does