need help. running rich.

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everynameistake

New Member

Nov 22, 2004

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Apr 1, 2005

#1

• Apr 1, 2005

• #1

ok well my car seems to be running rich, witch i think is caused by my injectors being too large.#30 and only 300whp gestament. i have a MAS calibrated for it. well after like ten minits of drinving at hi rev 3800+ it will start to miss and small back fire (bubbiling sound) when i let off the gas.i beliving its fouling the plugs. is there any tuneing i can do to help this. i have a driving school the 6th.

 

dstanggt50

Founding Member

Sep 13, 2000

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Woodinville, WA

Apr 1, 2005

#2

• Apr 1, 2005

• #2

you could set your f/p lower, and pull the plugs to confirm they are fouling.

 

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everynameistake

New Member

Nov 22, 2004

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Apr 1, 2005

#3

• Apr 1, 2005

• #3

o yeah new thought. also the tack instantly drops when it happens. i was thinking could it be the coil??? just a thought

 

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everynameistake

New Member

Nov 22, 2004

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Apr 1, 2005

#4

• Apr 1, 2005

• #4

dstanggt50 said:

you could set your f/p lower, and pull the plugs to confirm they are fouling.

Click to expand...

yeah im going to go do that now

 

95opal

5 Year Member

Nov 16, 2004

449

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39

Apr 1, 2005

#5

• Apr 1, 2005

• #5

adjustable regulator and some new plugs and ya might wanna replace ur o2s

 

shttygtstang

New Member

Jun 2, 2004

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Apr 1, 2005

#6

• Apr 1, 2005

• #6

i have a acufab fpr ill sell ya dirt cheap

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

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Apr 1, 2005

#7

• Apr 1, 2005

• #7

in addition to what was said, any codes? no vac leaks? good luck.

 

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everynameistake

New Member

Nov 22, 2004

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Apr 1, 2005

#8

• Apr 1, 2005

• #8

codes 81, 82, 85
but i dont think they have anything to do with this

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

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Apr 1, 2005

#9

• Apr 1, 2005

• #9

i think (my recollection) that code 85 suggests that the puter cant trim the a/f down lean enough. might look into that more (if nothing else, it confirms what you are thinking). good luck.

 

shttygtstang

New Member

Jun 2, 2004

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Apr 1, 2005

#10

• Apr 1, 2005

• #10

HISSIN50 said:

i think (my recollection) that code 85 suggests that the puter cant trim the a/f down lean enough. might look into that more (if nothing else, it confirms what you are thinking). good luck.

Click to expand...

hissin y do you think that would be. im just curious . think his ecu went into limp mode? im not sugestion nothin just wanna learn

 

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Daggar

New Member

Jul 19, 2004

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Apr 1, 2005

#11

• Apr 1, 2005

• #11

shttygtstang said:

hissin y do you think that would be. im just curious . think his ecu went into limp mode? im not sugestion nothin just wanna learn

Click to expand...

It means that what the computer thinks is the minimum threshold for the injectors is incorrect. It's trying to trim the injectors down to what it's been programmed for the minimum and it's too much for those injectors. So even though the meter is calibrated for the injectors, the pulsewidth and injector slope is off at idle. Calibrated meters only "fool" the computer. It could probably be made better by recalibrating the meter (if that's what's actually causing the problem and the calibration is off).

 

shttygtstang

New Member

Jun 2, 2004

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Apr 1, 2005

#12

• Apr 1, 2005

• #12

daggar think a tweecer would be beeter for him considering all the other options it has besides fuel pressure regulation. if hes gunna buy a fpr for 100 say and a base tweecer is 250 wouldnt he just rather spend the extra 150?

 

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Daggar

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Jul 19, 2004

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Apr 1, 2005

#13

• Apr 1, 2005

• #13

Actually I do... Ideally, I think the Tweecer RT would be his best bet (thinking back to the potential for his meter being the problem). The data logging feature could help him set the correct transfer fucntion for the meter as well as set the minimums and maximums for the injectors. I'd rule out other possibilites before running out and spending $500 on a Tweecer to fix this problem though. In his case... a PMS might even a better option. Leass learning to do and the meter is supposedly already callibrated for his injectors. He could use the PMS to just take away fuel at idle till it gets into range.

 

shttygtstang

New Member

Jun 2, 2004

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Apr 1, 2005

#14

• Apr 1, 2005

• #14

i was think the same thing but fer 500 wow thats alot to spend rather than seeing if he can fix it on his own

 

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Daggar

New Member

Jul 19, 2004

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Apr 1, 2005

#15

• Apr 1, 2005

• #15

I'm not sure of all the inner workings of the base Tweecer. Personally, I don't see why you wouldn't be able to do data logging so as the laptop is connected (maybe the software isn't set up for that). I've not been able to get a clear answer when I asked the question. Every just says "Get an RT".

BTW... I got that throttle body you sent me looking brand new! EGR spacer is next. I'm still looking for gaskets.