|
Title: Running lean in boost Post by: nagoL on October 18, 2013, 02:44:54 PM Guys,
I'm running a bit lean while in boost around 12.8 and I believe I should be in the 11's - I've also got a weird issue where if I throw her into neutral an coast to a red light she tends to idle as if I have a vac leak and my wide band runs up to 17s and back down over and over. It will do this consistently until I get under around 15 mph to a stopping point then shes back to a normal idle. I believe this also has to do with my AFR. Any help would be greatly appreciated. Specs are shown below and I can supply my recent logs if needed. '03 VW 1.8 GTI - Eurodyne Maestro Software - GT3071r turbo w/ billet wheel - Tial stainless steel GT3- v-band exhaust housing - Tial MV-R 44mm wastegate - InjectorDynamics ID725 injectors - APR intake manifold - 3" exhaust system. no cat. Magnaflow resonator and muffler. Dual tips. - Eurojet grenade Diverter Valve - Greddy 500hp core - Devils Own's DVC-30 water methanol - 42DD oil catch can - Aeromotive 340 fuel pump - 2.0T coil pack upgrade with IE spacers - Fluidampr lower pulley - Brute 19mm Connection rods (http://i42.tinypic.com/2i06qly.jpg) Title: Re: Running lean in boost Post by: adam- on October 18, 2013, 02:46:40 PM Why enrich then lean out towards redline?
Title: Re: Running lean in boost Post by: terminator on October 18, 2013, 04:35:13 PM Of course, because you have made it lean ;).
KFLF is not AFR request. 0.85 means 14.7(aprox) + 15% = around 16.9 without lambda correction. But if you use methanol you should lean it a little via KFLF or KFKHFM to prevent misfires. By the way, what software do you use? ECM Titanium also "think" that KFLF = AFR request. Title: Re: Running lean in boost Post by: nagoL on October 18, 2013, 05:10:26 PM Hrm, well i run 14.7 when cruising and i thought 0.1000 was the desired lambda for 14.7
The software is Eurodyne Maestro Title: Re: Running lean in boost Post by: ddillenger on October 18, 2013, 05:42:46 PM Think that is BTS...
Title: Re: Running lean in boost Post by: B234R on October 18, 2013, 05:43:48 PM No!
Lambda 0,85 means: 14,7 AFR * 0,85 = AFR 12,5. If you see 12,8 on your WB gauge, it can be due to a lot of things. Request is AFR 12,5 from that map. No rocket science. Title: Re: Running lean in boost Post by: nagoL on October 18, 2013, 07:42:39 PM Eh, appreciate the patience everyone. New to the tuning scene.
So, i need to tune more towards .78 request for this map if I want 11.5ish while in WOT (boost)? Title: Re: Running lean in boost Post by: RaraK on October 18, 2013, 09:32:28 PM .81-.82 max if you have meth as itll add an extra point or so depending on your nozzles.
Title: Re: Running lean in boost Post by: terminator on October 19, 2013, 06:07:38 AM Think that is BTS... Yeap, I was wrong ;DNo! Lambda 0,85 means: 14,7 AFR * 0,85 = AFR 12,5. Its for BTS or LAMFA, not for KFLF, like I thought) Strange thoughts ;D Title: Re: Running lean in boost Post by: userpike on October 19, 2013, 07:51:33 AM There is a huge Eurodyne thread on VWVortex.
|