Car is running unbelievably rich after blower install

TweekedGT

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Jun 28, 2006

#1

• Jun 28, 2006

• #1

What could be the possible causes of a rich condition? I am talking super super rich. I checked for Vac leaks and couldn't find any. Could my tune be that out? My tuner has taken 30% of fuel out of the original tune he gave me. Said he still needs to take another 20% out just to get a WOT pass in. He said if he does that the Load on the car will be down to about 7 or 8 when it should be around 17?? Something to do with pulling major timing or advancing major timing. Does this make sense to anyone? How could this be? Waht else could make this thing run so pig rich?

 

Dan_Soprano

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May 7, 2003

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Jacksonville, FL

Jun 28, 2006

#2

• Jun 28, 2006

• #2

what are you running for tuner, pumps, and injectors? MAF? Boost level?

 

TweekedGT

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#3

• Jun 28, 2006

• #3

Dan_Soprano said:

what are you running for tuner, pumps, and injectors? MAF? Boost level?

Click to expand...

I have an SCT Xcalibrator, 255lph in tank fuel pump, 60# injectors, BA2400 SCT 90mm MAF, and just a 9# pulley on a KB 1.7.

 

04YELLOWGT

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Jun 29, 2005

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Indiana

Jun 28, 2006

#4

• Jun 28, 2006

• #4

Those are some big a$$ injectors

 

White Stang

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Ft Lauderdale

Jun 28, 2006

#5

• Jun 28, 2006

• #5

TweekedGT said:

I have an SCT Xcalibrator, 255lph in tank fuel pump, 60# injectors, BA2400 SCT 90mm MAF, and just a 9# pulley on a KB 1.7.

Click to expand...

Do you have a return style fuel system?

 

TweekedGT

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#6

• Jun 28, 2006

• #6

04YELLOWGT said:

Those are some big a$$ injectors

Click to expand...

That they are, my tuner told me to go with them if I ever wanted to up the power level anymore. I was planning on running the 14# pulley right away but chickened out, don't think i have enough octane fuel to run that high with the heat the KB produces. My tuner knows all this so i assume he is tuning accordingly.

 

TweekedGT

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#7

• Jun 28, 2006

• #7

White Stang said:

Do you have a return style fuel system?

Click to expand...

Yes.

 

White Stang

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Ft Lauderdale

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#8

• Jun 28, 2006

• #8

Do you have a vacuum boost guage? Where's your vacuum at idle?

 

TweekedGT

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#9

• Jun 28, 2006

• #9

White Stang said:

Do you have a vacuum boost guage? Where's your vacuum at idle?

Click to expand...

Yes, It's an electric vac boost Autometer C2 gauge. It runs around 15-20 Vac at idle.

 

Dan_Soprano

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#10

• Jun 28, 2006

• #10

its got to be in the tune with the injectors. You should have stuck with 42#. they would have been good for 14# on a 1.7. I think his fuel maps are screwed for the 60's. they can be a BEOTCH to tune. trust me, I know.

 

White Stang

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Jun 28, 2006

#11

• Jun 28, 2006

• #11

So it sounds like your vacuum is fine. I would do a check list with all your mods and go over it with the tuner. It sounds like the tune is off.

 

TweekedGT

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#12

• Jun 28, 2006

• #12

Thanks for all of your help guys. Just confirming what I thought. He should have the car on the Dyno as we speak so hopefully he can get it working properly. I'll find out tomorrow, I'm supposed to go up with a colleague to get the car. If not i guess i have to wait until it's done. I hope he can get it straightened out so i can at least get my car back.

 

RedDaemon

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Jun 28, 2006

#13

• Jun 28, 2006

• #13

ill keep my fingers crossed

 

Dan_Soprano

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#14

• Jun 28, 2006

• #14

good luck bro!

 

TweekedGT

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#15

• Jun 28, 2006

• #15

Thanks guys! I'll see what happens tomorrow and keep you posted.

 

R

RoadconeTuning

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Jun 29, 2006

#16

• Jun 29, 2006

• #16

too big of injectors.... its hard to make a tanker truck only let out 20 oz. but much easier to make a 5 gallon bucket only let out 20 oz...

 

jstreet0204

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Jun 29, 2006

#17

• Jun 29, 2006

• #17

The injectors are not too big. I know of plenty of guys runing 60's. It sounds like you have another problem somewhere that you need to get fixed first. In your other post about your o2 sensors not working, the cause of that is likely the root of the issue.

What is your a/f ratio at idle?
What do you o2's read with the key on engine off?
Is your tuner shutting off adaptive during the runs?
Did the tuner save any datalogs of the runs, and if so can you post them?

 

TweekedGT

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Jun 30, 2006

#18

• Jun 30, 2006

• #18

We still can't figure out the problem. The O2's were like this on the ca when it was N/A and we were still able to tune the car with ease, we just had to keep it in open loop. Now we have no idea what is going on. Nothing makes sense. With the amount of fuel we will have to take out it it will bring load down to 5 or so when it should be 17-25.

 

stangGT97

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Jun 30, 2006

#19

• Jun 30, 2006

• #19

wait... so did you replace the O2 sensors? I thought they didnt have any bearing on the WOT tune anyway though?

 

TweekedGT

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#20

• Jun 30, 2006

• #20

stangGT97 said:

wait... so did you replace the O2 sensors? I thought they didnt have any bearing on the WOT tune anyway though?

Click to expand...

I did replace them just before I went to get the car tuned. I have no idea about there effect at WOT.