What are acceptable LT PT fuel trims?

rennteknik · 05-18-2006, 01:59 PM

I had a vacuum leak.. and after lots of chasing hoses, replacing vacuum lines, fixing a broken hose clamp on the intake side before the turbo, it would not tighten.. what a royal pia that was.. I digress..

anywho after lots of testing, replacing and swearing my fuel trims went from -18 to -11 or -13 depending on what bank..

is that acceptable or out of line..

AWE Stage 3, stock airbox, ASP downpipes..

is my MAF going, O2 sensors... beuller..

Todd/A.W.E. · 05-18-2006, 02:17 PM

Ray Khan · 05-18-2006, 02:38 PM

seeing as my parth throttle trim is around those numbers.

Todd/A.W.E. · 05-18-2006, 02:44 PM

mbox · 05-18-2006, 02:52 PM

I have never ever heard of ~-10% at idle. If that's true you have to be -30%+ at part throttle, lol.

mbox · 05-18-2006, 02:55 PM

just curious. thx.

Ray Khan · 05-18-2006, 03:01 PM

Todd/A.W.E. · 05-18-2006, 03:28 PM

Killer00S4 · 05-18-2006, 03:54 PM

So it was your hose clamp on intake before turbo?

Did a pressure test tell you this?

mbox · 05-18-2006, 04:19 PM

if you had a vac leak, your idle trims would be positive, not negative. I do think you're part throttle trims are a bit high tho'.

I might be able to help more but you don't list any significant mods.

05-18-2006, 01:59 PM	#1
rennteknik Member Garage is empty, add now Join Date: Mar 2003 Posts: 1,211	What are acceptable LT PT fuel trims? I had a vacuum leak.. and after lots of chasing hoses, replacing vacuum lines, fixing a broken hose clamp on the intake side before the turbo, it would not tighten.. what a royal pia that was.. I digress.. anywho after lots of testing, replacing and swearing my fuel trims went from -18 to -11 or -13 depending on what bank.. is that acceptable or out of line.. AWE Stage 3, stock airbox, ASP downpipes.. is my MAF going, O2 sensors... beuller.. __________________ Money Pit Motorsports 01.5 S4 Avant STG III 95 BMW M3 90 Coupe Quattro 20VT Thanks in no particular order: VAST, AWE, Buehn, ASP, Europrice, Moss@Torque Factory.. All A+ Vendors

05-18-2006, 02:17 PM	#2
Todd/A.W.E. Member Garage is empty, add now Join Date: Mar 2000 Posts: 4,109	-9 to -12 is a typical range after full adaptation on our airbox RSK04 LTPT trims. __________________ Todd Sager President A.W.E. Tuning Order line: 1-888-565-2257 Tech line: 215-658-1670

05-18-2006, 02:38 PM	#3
Ray Khan AudiWorld Super User Garage is empty, add now Join Date: Apr 2000 Location: Melrose, MA Posts: 20,310	completely different than my car, but somehow it makes me feel better (EDIT) seeing as my parth throttle trim is around those numbers. __________________ Ray Khan 00 1.8T QM APR stage 3+ APR Exhaust APR Intake DUH FMIC Southbend OFE Stage 4 clutch SPEC 12 lb flywheel Greddy Profec B electronic boost controller Porshe Boxster calipers BIRA stage I brackets Hawk HPS brake pads A8 rotors, SS lines V&S Short Shifter Vogtland Coilovers Neuspeed 19mm rear sway 18x8 Flik Lex 235/40/18 Falken GRB 451 17x7.5 B5 S4 Avus 205/50/17 Dunlop Wintersport 3D Sony XM 7554 amp with 5.25" and 6.5" Infinity kappas MTX 801D amp with 2x10" kenwood sub enclosure Xenons Fog light relay mod VDO boost gauge in custom vent pod Clear corner mod S4 wheel well liner RS-4 grill AIM and MSN messenger:rakha77

05-18-2006, 02:44 PM	#4
Todd/A.W.E. Member Garage is empty, add now Join Date: Mar 2000 Posts: 4,109	And you're not throwing a rich code? That's beyond idle tolerance. __________________ Todd Sager President A.W.E. Tuning Order line: 1-888-565-2257 Tech line: 215-658-1670

05-18-2006, 02:52 PM	#5
mbox AudiWorld Super User Garage is empty, add now Join Date: Jan 2005 Posts: 2,724	wait.... at idle?? I have never ever heard of ~-10% at idle. If that's true you have to be -30%+ at part throttle, lol.

05-18-2006, 02:55 PM	#6
mbox AudiWorld Super User Garage is empty, add now Join Date: Jan 2005 Posts: 2,724	what about idle trims? just curious. thx.

05-18-2006, 03:01 PM	#7
Ray Khan AudiWorld Super User Garage is empty, add now Join Date: Apr 2000 Location: Melrose, MA Posts: 20,310	whooops...part throttle :>P __________________ Ray Khan 00 1.8T QM APR stage 3+ APR Exhaust APR Intake DUH FMIC Southbend OFE Stage 4 clutch SPEC 12 lb flywheel Greddy Profec B electronic boost controller Porshe Boxster calipers BIRA stage I brackets Hawk HPS brake pads A8 rotors, SS lines V&S Short Shifter Vogtland Coilovers Neuspeed 19mm rear sway 18x8 Flik Lex 235/40/18 Falken GRB 451 17x7.5 B5 S4 Avus 205/50/17 Dunlop Wintersport 3D Sony XM 7554 amp with 5.25" and 6.5" Infinity kappas MTX 801D amp with 2x10" kenwood sub enclosure Xenons Fog light relay mod VDO boost gauge in custom vent pod Clear corner mod S4 wheel well liner RS-4 grill AIM and MSN messenger:rakha77

05-18-2006, 03:28 PM	#8
Todd/A.W.E. Member Garage is empty, add now Join Date: Mar 2000 Posts: 4,109	within 1% deviation is typical. __________________ Todd Sager President A.W.E. Tuning Order line: 1-888-565-2257 Tech line: 215-658-1670

05-18-2006, 03:54 PM	#9
Killer00S4 AudiWorld Member Garage is empty, add now Join Date: Mar 2006 Posts: 595	Yeah I have a vaccume leak I have not been able to track down; mine are high -1% -16% -2% -18% So it was your hose clamp on intake before turbo? Did a pressure test tell you this? __________________ Old times with PJ-K04's 3.3 FATS 93oct 3.3 FATS LOG 3.2 FATS on 92oct Base file EPL/WI. K24 ET Brids Built Motor/2.8H,RS4Cam,DUH FMIC, AQUAMIST HFS1. 3.2 FATS LOG 2008 GSX-R 750, lots of mods... 2000 Audi S4, lots of mods... " You almost had me? You never had me -you never had your car... Granny shiftin' not double clutchin' like you should. You're lucky that hundred shot of NOS didn't blow the welds on the intake! You almost had me? Now, me and the mad scientist got to rip apart the block... and replace the piston rings you fried. Ask any racer. Any real racer. It don't matter if you win by an inch or a mile. Winning's winning. " Listen to Dom. Dom knows because he lives his life a quarter mile at a time. Nuff said

05-18-2006, 04:19 PM	#10
mbox AudiWorld Super User Garage is empty, add now Join Date: Jan 2005 Posts: 2,724	that's b/c you don't have a vac leak... if you had a vac leak, your idle trims would be positive, not negative. I do think you're part throttle trims are a bit high tho'. I might be able to help more but you don't list any significant mods.

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