Hello, i have the map cobb on my 350z roadster 2004 automatic with manual differential installed, i chose stage 2+ option. (there is stage 1, 2 , and 2+)

my mods: upper plenum kintetix,lower manifiold motordyne, jwt intake with air filter, resonated test pipes, stillen light pulleys,ichiba headers, stillen engine damper.

all my friends told me that its very lean , beacuse the gas its not burning efficiently,and i can actually see the gas goin out of my exaust !!! what should i do ? should i go for stage 2 instead of stage 2+ so air and fuel will be equal? or do a custom map ? cobb team sent me once the software for custom map, but i dunno if i shld go for a lower map like stage 2 or a custom one. because i lost a race with same mods with my friend and he has stock ecu !
pls reply, thank u.
ramzi

 

"all my friends told me that its very lean , beacuse the gas its not burning efficiently,and i can actually see the gas goin out of my exaust !!! what should i do ? "

Dont listen to your freinds, listen to a wideband air fuel readout or a consult run..find out what youre really at for AF..... or bring it to a local shop that can tune it...not shore what Lebanon has for tunres tho.. cant help ya there...

Cobb doesnt support the 350z anymore.. but Id still give them a call if you have thier product.

Aside from frineds guessing its lean and seeing gas come out the back of your car (?) what are the actual symptoms..aside from losing a race w someone w the same mods.

 

2nd gear and on, the rpm moves not fast enough ! stock was better!, the only advantage is that the rpm is goin up to 7200. i guess im goin tomoro to custom tune it.
or again shld i drop one stage bmccann101 ?

 

custom tune is always what is necessary, rpm by rpm AFR and timing if posible.. im not sure whats avail on cobb... i run UTEC.

 

yes i got the custom software sent by their company, thx for ur help man

 

They support it, they just don't sell it anymore. I do believe the last update was the final update.

 

well this has fail right from the start..first of all get on a dyno or get a wideband that will tell u if u are lean or rich....second of all if u can see gas coming out of the tailpipe then that means you are extremely rich NOT LEAN..lean is when u are not getting enough fuel and rich is getting too much fuel..must be some pretty bright friends

 

u need to contact someone in your area familiar with the z and familiar with using the cobb software and have the car dyno tuned..if there is nobody in the area that tunes with cobb then u should change to what they do tune...

 

bro ur running RICH not LEAN! since ur saying gas is going out of ur exhaust...stage 2 is the way to go!