BNR S3 Acquired - Page 7 - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum

MWSpeed6 · 02-06-2012, 07:31 PM

He's getting KR, so his AFR will be skewed because KR causes the ECU to richen the mixture. Reducing WGDC won't reduce boost in your case, because your WG spring preload is set high enough that it's out of the EBCS's control. I had suggested reducing the preload on the spring so you can reduce boost until you have no KR, so you can tune the MAF and proper WOT AFR. Then begin to raise boost.

p057 · 02-06-2012, 08:46 PM

fuck, the if its the same difficulty as the downpipe... i can totally do this in a weekend

JDW1 · 02-07-2012, 04:50 PM

Max enrichment is 10.9 and i saw 10.45 in one spot. I have tried to dial in a WOT afr but i def think the KR is affecting it. Its spot on in places then go's crazy. I can get the boost down more and see if that will allow for a clean WOT MAF cal i guess.

MWSpeed6 · 02-07-2012, 05:08 PM

Quote:

Originally Posted by JDW1

I have tried to dial in a WOT afr but i def think the KR is affecting it. Its spot on in places then go's crazy. I can get the boost down more and see if that will allow for a clean WOT MAF cal i guess.

Yeah, that's what I've been trying to tell you

. Here's a quote from the Mazdaspeed COBB ATR help file (a more credible source):

Quote:

NOTE: IF ANY REPORTS OF KNOCK RETARD (KR) ARE PRESENT DURING THE PULL, THE ECU WILL INJECT ADDITIONAL FUEL TO HELP PREVENT REPORTS OF KR. The higher the reports of KR, the more fuel (in addition to the fuel dictated in the Fuel OL/WOT Commanded EQ (No Knock) table) the ECU will inject. In order to verify the MAF Calibration is set up properly, you will need to make sure that KR is not reported for the entire pull. This may require that you run a lower than desired boost levels in order to datalog a clean dyno run that has no reports of KR.

02-06-2012, 07:31 PM	#61 (permalink)
MWSpeed6 Rally Racer Join Date: Nov 2009 Location: Ontario, Canada Posts: 1,005 Thanks: 322 Thanked 435 Times in 312 Posts Groans: 1 Groaned at 2 Times in 2 Posts iTrader: 0 reviews	He's getting KR, so his AFR will be skewed because KR causes the ECU to richen the mixture. Reducing WGDC won't reduce boost in your case, because your WG spring preload is set high enough that it's out of the EBCS's control. I had suggested reducing the preload on the spring so you can reduce boost until you have no KR, so you can tune the MAF and proper WOT AFR. Then begin to raise boost. __________________ 2007 mazdaspeed6 GT \| titanium gray Relevant mods: Magnaflow 2.5" CBE \| ATP 3" cat'ed DP \| SM OCC \| EGR delete \| ITV22s \| GP-WERKS BSD + oil pan baffle \| KMD HPFP \| GrimmSpeed EBCS (interrupt) \| COBB SRI, TIP, AP (boost tuned stage 2 93 oct) \| Corksport 3" TMIC \| TT rear diff mount + bushings, front engine mount \| AutoExe Lowdown springs \| SPC camber adj ball joints \| JBR SSP + weighted knob.

02-07-2012, 04:50 PM	#63 (permalink)
JDW1 Track Racer Join Date: Sep 2010 Location: Birmingham, Al Posts: 360 Thanks: 59 Thanked 47 Times in 41 Posts Groans: 0 Groaned at 0 Times in 0 Posts iTrader: 1 reviews	Max enrichment is 10.9 and i saw 10.45 in one spot. I have tried to dial in a WOT afr but i def think the KR is affecting it. Its spot on in places then go's crazy. I can get the boost down more and see if that will allow for a clean WOT MAF cal i guess. __________________ 07 Liquid Plat Silver W/BNR S3, DNP mani, ATP DP, custom 3" to 2.5 w/magnaflows, ETS TMIC, Cobb SRI, PG TIP, Cobb AP, Perrin EBCS, Forge V2, HKS Twin Power Ignition, AWR RMM, SM OCC, KMD Int, H&R springs, SPC's, D&S Rotors, EGR Del, CPE Rear Diff Mount and TT RD Brace. RX8 Wheels, SF Antenna, int LED's and 29% tint for looks.

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