Rough running

[XfireZ51]

Bring it to Chicago.

[jss06c6]

Originally Posted by XfireZ51

Bring it to Chicago.

That certainly would be time well spent!

[Billy Mild]

Well this thread is going to flipped upside down.

I just recently purchased a NOS 1991 PROM. I wanted to try out a stock tune on my car and see how it reacted. It is very interesting how the car reacted. No stumble at all under the exact same conditions as before, and I noticed that the BLM/INT's were more consistent side to side. With my Haibeck tune the INT's get way off from side to side, and during a decel drops to a really low number. The stock tune never got below 115 on INT or BLM's. Very interesting. It appears the O2 sensors worked better as well. The car did backfire quite a bit during deceleration.

I will attach the datalog. This points me to a tuning issue for my Decel, tip in, stumble issue.

To look at the datalog you will need to change from .pdf to .xdl file extension. Could someone review and compare?

[XfireZ51]

There are 2 stock chips for every year. Do u happen to know the "broadcast code" for the chip u bought?

[Billy Mild]

Originally Posted by XfireZ51

There are 2 stock chips for every year. Do u happen to know the "broadcast code" for the chip u bought?

Would a picture of the chip help?

[-=Jeff=-]

Originally Posted by Billy Mild

Would a picture of the chip help?

yes, he wants the info off the silver label on the MEMCAL..

[rush91]

Sorry your having such issues.....But DAMN I love the sound of your Beast! I'm running a stock chip and sometimes get a backfire on acceleration but never on decel....