Okay I recently made the upgrade from ??? to ZZP Stg 2.

2.9
50#
spark plugs
and S2 belt
Trifecta Tuned. (Already verified that the tune is good)

I have I/E/H + GMMP Exhaust.

I've checked all the seals and gaskets etc etc. I just changed the oil and I am still having problems with my idle. When I start it up it has anywhere from 8-52 misfires then cruising down the road I'll occasionally get 4-8 on cruise down the free way. I'm kind of lost on what to do next. When the misfires happen the A/F gaurge go super rich 10.0 and then leans out all the way to 16.0. I'm thinking maybe a bad injector? When I made the "Upgrade" the car had injectors w/ blue o-rings (caps?!). Is the harness different?!

 

How an you tell the tune is good if you can't see it? Alps it can be a leak a sensor issue or more then likely tune..... Make sure he knows the injectors are 50s which I beleive if from Zzp are made from stock injectors.. I've tuned plenty and the tune all around injector wise is great. Idle is smooth and etc.

 

I data logged the car 3 times. at 3 different temps. 1 cold start at 50F one warm start at 76F and another cold start at 76F and sent the logs back to trifecta and was told the tune is fine. In the original E-mail he was notified that the injectors were 50#.

 

3 logs? Your kidding right.... And just because you are told ye tune is ok doesn't mean it is. I can prove that wrong with one log. There are many type of 50s you need to make sure to tell him they are deka 50s

 

No, I noticed the problem so I wanted to make sure I sent of a wide ranged of Driving so I could make sure the tune was good. I'll data log the car once more and send off the email making note that these are Deka 50s and to triple check the tune.

 

It take more then three logs to finalize any tune. Tune the car in closed loop beginning then open loop after stft and ltft are down to at least 5% . I'm sure if it just happens once the tune then tune needs work

 

A little lost on what you men here. Not very knowledgable on the Tuning aspect of cars. Also it's still the original tune. When I was sent the tune it was "good" even after the logs. It's on Tune 1.

 

It takes more then one or even a few logs to get a car mint on fuel trims and commanded afr vs actual afr. Along with timing and etc. so as of now I am saying tune needs a lot of work just from you telling me you have only had a few revisions.