MAF tuning on a dyno

QWKSNKE · 09-30-2005, 07:05 AM

Going to try and hit up the dyno next weekend if I have time.

Is the chart on efipunk's website correct? ( http://www.geocities.com/efipunk/ )

Is this all I have to do to get the upper rpm MAF tuning done?

QWKSNKE · 09-30-2005, 07:06 AM

Also,

Dale and/or Clint would you mind taking a look at my current tune and see if you notice anything that needs to be changed

Dale McPeters · 09-30-2005, 11:18 AM

Email it to me at

(mcpetedl at grandecom dot net)

I will take a look at it, also want to look at the startup fuel table etc.

86GT · 09-30-2005, 11:44 AM

I disagree with efipunk's web site. He states that to correct a particular MAF point that you need to subtract the KAMRF from 1 and then multiply that against the MAF flow. In his example

RPM MAFv KAM
Idle .80 .92

Multipling the MAFV or MAF flow by .8 is not correct. The above means the car is running rich and that the EEC is pulling fuel out to compensate. The correct way is to simply multiply the KAMRF by the MAF flow or voltage. In his example it would be .80 * .92.

I perfer to multiply the KAMRF on the flow and not the voltage. This means that you will need to log flow

I would also be careful in using the WB on the dyno. If it is one that goes in the tail pipe, then it will not be accurate. If it replaces one of your O2's then it would be Ok.

QWKSNKE · 09-30-2005, 12:16 PM

as rich as I want my car, I think the tail pipe will be ok. I am still planning on buying a wideband 02 before the year is up

QWKSNKE · 09-30-2005, 12:17 PM

I'll send you my current tune this evening when I get in from work

Sendero · 09-30-2005, 12:48 PM

Quote:

Originally Posted by QWKSNKE

as rich as I want my car, I think the tail pipe will be ok. I am still planning on buying a wideband 02 before the year is up

Just so happens that mine is still for sale.

QWKSNKE · 09-30-2005, 01:37 PM

Quote:

Originally Posted by Sendero

Just so happens that mine is still for sale.

I already have a different kind picked out. Just need the $$ for it

QWKSNKE · 09-30-2005, 05:14 PM

Dale, you have mail

Dale McPeters · 09-30-2005, 10:46 PM

Lee, you have return mail. I added in some suggestions also.

09-30-2005, 07:05 AM	#1
QWKSNKE 3v's are slow Join Date: Dec 2004 Location: Here and There Posts: 17,152	MAF tuning on a dyno Going to try and hit up the dyno next weekend if I have time. Is the chart on efipunk's website correct? ( http://www.geocities.com/efipunk/ ) Is this all I have to do to get the upper rpm MAF tuning done?

09-30-2005, 07:06 AM	#2
QWKSNKE 3v's are slow Join Date: Dec 2004 Location: Here and There Posts: 17,152	Re: MAF tuning on a dyno Also, Dale and/or Clint would you mind taking a look at my current tune and see if you notice anything that needs to be changed __________________ 2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy

09-30-2005, 11:18 AM	#3
Dale McPeters 5.0 Block/Walnut Cracker Join Date: May 2005 Location: Working.... Posts: 2,409	Re: MAF tuning on a dyno Email it to me at (mcpetedl at grandecom dot net) I will take a look at it, also want to look at the startup fuel table etc. __________________ '14 Dodge Challenger SRT8 392 6-speed

09-30-2005, 11:44 AM	#4
86GT Member Join Date: Mar 2005 Location: Sacramento California Posts: 449	Re: MAF tuning on a dyno I disagree with efipunk's web site. He states that to correct a particular MAF point that you need to subtract the KAMRF from 1 and then multiply that against the MAF flow. In his example RPM MAFv KAM Idle .80 .92 Multipling the MAFV or MAF flow by .8 is not correct. The above means the car is running rich and that the EEC is pulling fuel out to compensate. The correct way is to simply multiply the KAMRF by the MAF flow or voltage. In his example it would be .80 * .92. I perfer to multiply the KAMRF on the flow and not the voltage. This means that you will need to log flow I would also be careful in using the WB on the dyno. If it is one that goes in the tail pipe, then it will not be accurate. If it replaces one of your O2's then it would be Ok. __________________ EEC Analyzer A9M, TwEECer, 306ci, 73mm C&L w Tuner Tube, Cobra Intake, 42# inj, Edelbrock 6037, E303 cam, 155 fuel pump, FPR, 70mm TB, E-Fan, 3.55 gears, Powerdyne 9psi actual 5psi...way more.

09-30-2005, 12:16 PM	#5
QWKSNKE 3v's are slow Join Date: Dec 2004 Location: Here and There Posts: 17,152	Re: MAF tuning on a dyno as rich as I want my car, I think the tail pipe will be ok. I am still planning on buying a wideband 02 before the year is up __________________ 2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy

09-30-2005, 12:17 PM	#6
QWKSNKE 3v's are slow Join Date: Dec 2004 Location: Here and There Posts: 17,152	Re: MAF tuning on a dyno I'll send you my current tune this evening when I get in from work __________________ 2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy

09-30-2005, 05:14 PM	#9
QWKSNKE 3v's are slow Join Date: Dec 2004 Location: Here and There Posts: 17,152	Re: MAF tuning on a dyno Dale, you have mail __________________ 2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy

09-30-2005, 10:46 PM	#10
Dale McPeters 5.0 Block/Walnut Cracker Join Date: May 2005 Location: Working.... Posts: 2,409	Re: MAF tuning on a dyno Lee, you have return mail. I added in some suggestions also. __________________ '14 Dodge Challenger SRT8 392 6-speed