well i figured id start this here.. the car is "done" after many hiccups over the past year having to do with sub par products/customer service.

the only thing left after this 2 year long fiasco is tuning this thing.. which will probably take me another 2 years as im learining.... good thing i have some of the best tuners around me daily i can pick at for advice. as well as this gem of a forum with its endless amount of info.

here she is.

old motor.. stock 2.7 AWE ots stage 3... not bad.. went low 12s at 117


By jdmej195 at 2010-01-10

the new digs..
3.0L crank
VAST stroker internals with upgraded ARP rod bolts
Raceware studs everywhere.
ported 2.8L heads, 1mm oversized intake valves, supertech exhaust valves
asp GT28RS kit modified for divorced wastegate dumps.
custom 2-1 FMIC into a hemi TB and ported RS4 manifold.
EV14 95lb injectosr at 4bar
034 rails
90mm MAF elbow
2.25 to 3.5 inch custom y pipe
full -8 fuel system using a surge tank and aeromotive a1000 pump
Car was also semi widebody'd and resprayed as well as the engine bay was cleaned up and "shaved"




By jdmej195 at 2010-11-17

By jdmej195 at 2010-10-28

By jdmej195 at 2011-02-19

By jdmej195 at 2011-02-15

By jdmej195 at 2011-02-15

By jdmej195 at 2011-02-15

By jdmej195 at 2011-04-03

By jdmej195 at 2011-08-28

By jdmej195 at 2012-02-05



My first "tune" i had on the car was just basically a base/breakin mafless tune done by Mike @ vast.. which ran very well for such a custom setup on only a couple revisions.. made nearly 400whp at 13psi.

now as most of you know.. VAST is no longer.. so im going to try and take the tune on by myself...

im currently at this point... and its going ok.. but i kind of want to start from scratch..

im using Snow Troopers single/bigturbo file as a base...

did some error code removal as im not running evap,n249, n75,egts rear o2s etc.....
also scaled for my 90mm maf by using tonys maf scaling from his 85mm file and scaling it up a little bit for my 90mm..
also have changed krkte and tvub... starting with a theoretical value of ~.31 for krkte which ended up going up to .47 after a few logs.
a few other minor things were done.. but i really need to do some more logging while driving... it runs ok as of now (idle and part throttle) but as soon as you hit any sort of boost/med-high load. the car likes to run lean.. so im currently learning on how to deal with that. but i think i really need to dial in my injectors/MAF before i get in depth with anything else.

figured id post this thread though considering its not the most standard build and i hope to help others/get some insight on tuning this thing.

Oh dude I have a way better file for you to run!  That old one was pretty rough.

Ok, this file must be gone through for your application.  Off the top of my head it has o2 sensor stuff turned off , even primary for emulation with a wideband.  Its also bosch maf and I am not sure what you run.  I honestly hope you will go through it map by map to cross check what you are currently running with success vs this.  Its a base for any BAT, yet it was running on my car at one point, just be careful.  I have turned some things on and off, fuel strategy is great if your maf is scaled properly, VVT is setup for big turbo and so on.  oh and ARMD is pulled under WOT.  Once you get this file dialed to your car there is no reason it shouldn't be an animal.  With race fuel it will be timing conservative, when that time comes i can help you with your timing maps for good fuel.

mixed this file with the file i was running before (because i had done the code deletes)  so i basically took all of the important maps and threw them on my old file..

basically it really doesnt run as well.. i know it needs some tweaking but first thing i noticed was that engine vacuum was sitting at -16 inhg and now with this tune they barely reach 13..i think it has to do with throttle maps?

and with all my same fueling/maf settings as far as constants... MAF scaling, krkte, tvub etc.. the car was OK(11.1-3:1)in boost.. and now its super lean @13 or so...

like i said im going to play around with it until i can get some solid WOT logs.  but this is just an update of the first trial

i just did this^ i thought the same myself... im going to flash it tonight and hopefully tomorrow i can get some good logs from it.

im having a hard time believing that there isnt something wrong with my fueling.. im running 1000ccs at 4bar and the car runs best at around .047x krkte which ,to me.. seems so far off from the calculated .031xxx.. i know there is a lot to do still.. but from a learning stand point.. what kind of other variables can change this value as far as tuning is concerned.

maf could possibly be off as well.. i havent really had a good enough situation to log this thing fully.. so ill get aroudn to that this weekend..

and there is just soo much going on with  my cars intake/charge plumbing(custom y pipe, single tial bov, 90mm maf open element etc).. and on top of it the 3.0L probably doesnt help with tuning.. it will take a while for me to learn these things.

I work at AMS and when the tuners arent super busy(never happens) i can probably pick their brains as well on some issues.. id like to get the car running well enough to justify throwing it on our dyno and seeing what i can do there.

Email me your file at jared@vlmspec.com and I will ensure your front o2s are setup normally.

The krkte further tells me your maf is reading low.  Had you tried running it maf unplugged.

okay, there were a few o2 issues and it also had some other fueling bugs I noticed, calculated egt values were off also.

I scaled your maf up a little more, more inline with what i have seen big turbos wanting.  I may have over done it but on a 90mm you will have a ways before you go over the limit.

we need logs of your load values

How much boost are you set at with the ebc?  Do you have cats?  When you say it occilates, what's it feel like?  All it could be doing since you have an ebc is dumping fuel to kill power and or cutting timing.

Basically all boost related triggers to cut throttle due to boost are turned off. 

Ecux logs are totally fine, I actually still use it more than me7l.  I will look at it in a sec.

Oh also your rev 4 had bts fueling coming on way early.  It probably going to a requested AFR of 9.99 mid pull.