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i did 3.6 lfx on my old FWD GM car swap last year, car weights 1400kg and with my tune had 0-100km/h about 5sec flat at 0 sea level.

i went from 0 sea level to Tehran 1200meters above sea so...

Iran

VATs are in relation to some hardware located on the car body and harness so easier to disable it completely by hptuner .

removing the CATs core was a must for my project and rear o2s are about to...

if you can swap LFx so you can do LGX ... lately swapped LFx into my 1990 cutlass ciera and can ay hptuner not fully compatible to e39 ECMs.

anyone with 3.6 lfx engine(from 2015 impala limited swapped on older car) tried to lower idle rpm?! whatever i did to tune cannot set it lower than 680 and it seems some changes i do on the tune and...

thanks Steve for your reply ... yes I found the same answer and can you let me know about using alternator for the tach?

and can i use brake module speed signal for speedo ?!

doing lfx 3.6 swap into my 1990 Cutlass , i want to know if there is a way to have output signal for tach and speed from e39 ECM like what we do about older ECMs like e38 or 411...

L76/L98 cam is 200/208 0.472 0.479

thanks to sultan about offline and online helps ...after i wired and plugged up o2 sensors engine runs much better and idk how it can be related but everytime i was plugged maf sensor i was getting...

it 's stock ... should be 92mm.

you mean some hardware issue to maf and damaged?! i have a wideband kit here but i m not sure to set it up or rewiring for stock front O2s ?!

thanks to all for help and comments, i need to know if relearn crank fault code can effect on how the engine performs ?!

i m rewiring rear o2s to front ones ... can i use those o2 sensors from the rear for front if i solve connector issue?

sultan, here is result log file with maf sensor plugged ... timing looks more stable but still engine shaking whole car.

hi Bro , yes that was first step i did . i ll try it soon and let u know ,thanks.

L98 is 6.0L aluminum block gen 4 and with ls3 heads and ls3 intake ...somehow L99 or ls3 with 200cc less .

this is 60k miles engine all stock except camshaft ...how unbalanced engine causes changing the timing?

maybe your posts give me no help but at least your posts counts more

here is the tune file

tr6 spark plugs
shorty headers and ls3 camshaft as i mentioned before + ls3 valve springs
i have no correct o2 sensors for front o2 sensors ..only plugged rear one which...

i hope your next post contains more helpful questions

hi all hpt family .. my first post here
just cranked my L98 6.0L with ls3 cam/standalone wiring/th400 ... i got idle with vibration and I got a crank relearn fault code which hptuner does not help...