How do i get my g60 BBM stage 4 with 58mm pulley not to lean out?
The lean out issue that can occur is:
The #1 cylinder at the end of the intake starving at high boost. The cure is this:
SR ported G60 stage 1 intake manifold, powder coated
Run the set up on your car by someone at TT, BBM or buy a chip from SNS and they'll figure out what you need as far as fueling and chip tuning
with that small of a pulley you'll need a standby g-lader to swap in every 6-12 mos while your charger gets rebuilt / inspected.
What injectors are you running? Sounds like you are running out of injector/fuel and the only way to get around that is larger injectors or higher fuel pressure. Both of which need need proper chip mapping or you will be fighting yourself. too rich down low to get ok up top, etc, etc... That is unless, you want to fiddle with a rising rate FPR, but that is all trial and error and wideband is a Must.
Might be time to think about standalone if you want to push the envelope. Also, remember that the G60 ECU's MAP sensor is very limited (can only read up to 1 bar of boost), so you are already past what the ECU can interpret and the Map is just set to guess on what the Fuel needs are at full boost.
i have 30lbs injectors. i noticed everytime i shift gears also in high rpms feels like the car falls flat on its face then starts to pull again...... like a hesitation thing. Any idea's what that can be? it also did it when i had a 68mm pulley on it. so i changed cap rotor vac lines plugs wires. 1 meter hose to the ecu. and re set my timing to 6. replaced fuel filter and knock sensor but still doing that hesitation. Does anyone know what is the difference between the purple label ecu and the brown? im running the brown. Didnt know if that maybe had something to do with it.
My gauge is on the fuel rail. i guess i would have to go to a dyno and stand in place where i can see what its saying at WOT? but if it was fuel pump figured it would just give up. Not do what its doing to me. Wide open throttle first gear good. when i switch to second WOT then it feels like something is holding me back then starts to pick power up again. WEIRD
My G60 does the same thing with a 68mm pulley. First gear is usless I feel it there also but it's really short revs very quick, when I get into second thats where I feel it the most. I have not pushed the car too much after that fearing a lean condition. I need a LM-2. I was thinking the ISV is opening and closing trying to control boost but I really don't know. I have a rebuilt G-ladder with no ISV-re-reoute pushing 9lbs. of boost.
Car feels nice and strong with a little more boost and that surgeing gone it would be a really quick car.
I'm wrighting it up here
I have avoided using a smaller pulley for this reason and holding back from installing a Lysholm supercharger I have. Also I have been avoiding raising the fuel pressure too much to prevent puddling and ruin the engine. Currently using a 3.5 FPR.
Last edited by Pete O. Arguelles; 08-08-2012 at 01:19 PM.
Last edited by Pete O. Arguelles; 08-08-2012 at 02:07 PM.
You have the same setup and the OP? 30# injectors @ 3.5 and BBM chip? Might want to start a different thread if not to prevent a LOT of confusion.
I can tell you that years ago, I maxed out stock injectors early on after going Cam and 68mm pulley, ported charger, etc. 30# @ 3bar gives you only slightly more than stock injectors @ 3.5 bar. 30# @3.5 (with the correct chip mapping) should give you enough fuel for most setups with 65mm+. Small pulley than that and you are chasing a dream and either need a rising rate FPR, or larger injectors and upgraded MAP sensor with corresponding chip, or all of the above.
If you guys insist on staying with Digi vs standalone and push the limits. You really need to get on the threads regarding programming your own chip via TunerPro and the .XDF quite a few people have been working on over the years. IMO of course...
I'm not new to G60's but very new to tuning. I have made my G60's look good IMO now i'm trying to make them faster. Would love to work with the stock digi 1 but not limited to it and would go standalone.
Ive done about everything and changed everything but still dont know where the hesitation comes from. Im currently running bbm stage 4 kit ported head, ported manifold 68mm pulley tt header front mount intercooler rebuilt charger with mini port isv re route. changed every vacum hose fuel pump fuel filter cap rotor plugs wires etc. im out of idea's now.
forgot im running bbm fpr have it set at 50 psi with 30lbs injectors
well after all the Shiiiit i went thru changing. i think i got it. it hasnt hesitated since. I replaced the positive wire thats on the alternator and the blue wire also. and my ECU hose was 33 inches long not 1 meter exactly. and hasnt done it since. So i slapped my 62mm pulley and seems like its pullying good. just my Narrow band showing lean in the top with 51 psi on my fuel pressure gauge. not sure if i should add more? I thought we were suppose to run 3.5 bars?
So your saying i should raise it up to 4.5 which will equal to 66.15 psi while at idle plugged in or do you mean while unplugged?
Sorry for being confused just trying to get my car to not lean out so much
Last edited by jeffs vw; 08-15-2012 at 02:10 AM.
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