Fred94LT1

Just wondering. My car seems to love it at the moment. I have it programmed to stay open loop until the coolant reaches 250 degrees. In other words, no sensor screw up. Ilke it,
Fred

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1994 Z28, A4,
BEST 1/4 12.413@109.55
BEST 1/4 MPH 110.49
BEST 60' 1.668
BEST 1/8 7.884@86.35
BEST 1/8 mph 86.77
Race Weight 3600lbs
No new times with P&P heads Flow 239.4 INT 182.1 @525 lift, or
24lb SVO inj's...

97bowtie

Buddy of mine set his LT1 stroker motor (383) to run in open-loop all the time. He said it felt quicker, but didn't show any gains at the track. The car also idled a little better.

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'97 Z28 6 speed - Cayenne Red Metallic
CC305 - 112 LSA, Crane Gold 1.6 RRs, Crane 10308 springs, K&N CAI, SLP Shorties, custom offroad y-pipe, borla, Motive 3.73s - TA girdle & stud kit...

13.384 @ 107.79 - 2.186 60' and 90*

Don't question the great...just enjoy us

My '97 Z28

Shon Herron

I ran my car in OL. It was alot better. it picked up MPG too. it was just running too rich in CL so OL helped that.

I have found some problems that would help with explaining a few things so we will see after Phase II what the car likes.

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Old Setup was:
94 Z28 A4(3.73)
LT4 H/I/HOT cam
1.69/12.27@108

TravisA

Does your computer look at any of the sensor in open loop..like the IAT,o2's etc..

later
Travis

Fred94LT1

It looks at the IAT but not at the o2 sensors,
Fred

Dan K

So how do you guys tune a car with an open loop file?
Since you aren't getting any info from the O2's, what do you do?
I have a friends car that I'm trying to tune and we're having a heck of a time with it trying to tune it closed loop.
If anyone can give me some help or point me in the right direction, I'd be very thankful.

GUMP

I run my Stocker in open loop, because I found it made it much more consistent and easier to tune. With a big cam and closed loop the computer tends to jump all over the place at idle.

Daren