[biker2k]

so i am aware that i might have a tuning issue...

but does anyone else feel like 6th gear was better n/a at low to mid rpm?
just asking to see if its just me or this is common..
i could understand why if its because when not in boost you don't have similar intake runner characteristics as n/a but in 6th gear boost should happen right away right? as it is immediately under load.

i am assuming this is something i can fix in the tune...
and my tune is sort of a long story,

[Joshinator99]

Originally Posted by biker2k

so i am aware that i might have a tuning issue...

but does anyone else feel like 6th gear was better n/a at low to mid rpm?
just asking to see if its just me or this is common..
i could understand why if its because when not in boost you don't have similar intake runner characteristics as n/a but in 6th gear boost should happen right away right? as it is immediately under load.

i am assuming this is something i can fix in the tune...
and my tune is sort of a long story,

Do you have some data logs you could post up?

[biker2k]

i could get some

[s346k]

how much boost is it making at the rpm you're turning? i imagine the car is making very low boost numbers and seeing much less timing at sub 2k rpm vs na.

[KingLT1]

My guess is your tune has a lot of timing yanked out of it in the low/mid range area of the high octane spark table. Seems to be common with many tuners and FI setups.

[biker2k]

that would explain alot if true

[Joshinator99]

Originally Posted by biker2k

that would explain alot if true

If only there was something available that you could use to record what’s happening for us….

[KingLT1]

Originally Posted by Joshinator99

If only there was something available that you could use to record what’s happening for us….

[biker2k]

i just haven't gotten a chance but i will thanx

[biker2k]

here are some logs

i believe this tune is on speed density

turns out i had a vacuum leak at the purge valve when i got this tune....


i got a second maf tune to fix original tune not knowing there was that leak and then i discovered i also ha d a new and much bigger leak where my catch can line was cut in 1/2 below airbox where i couldn't see and then car was maf tuned that way... all leaks were my fault but nonetheless i dont think i have had an clean slate tune, car runs better and more consistent obviously since i fixed them and turns out car runs best with original tune. so i have so many questions and feel bad for my tuner and myself, in the end i think i need a retune maf style with everything right, anyway this sixth gear thing just had me thinking and thought i would see if that's normal going from n/a to s/c..


says the hpl file is invalid for upload

[Joshinator99]

Originally Posted by biker2k

here are some logs

i believe this tune is on speed density

turns out i had a vacuum leak at the purge valve when i got this tune....


i got a second maf tune to fix original tune not knowing there was that leak and then i discovered i also ha d a new and much bigger leak where my catch can line was cut in 1/2 below airbox where i couldn't see and then car was maf tuned that way... all leaks were my fault but nonetheless i dont think i have had an clean slate tune, car runs better and more consistent obviously since i fixed them and turns out car runs best with original tune. so i have so many questions and feel bad for my tuner and myself, in the end i think i need a retune maf style with everything right, anyway this sixth gear thing just had me thinking and thought i would see if that's normal going from n/a to s/c..


says the hpl file is invalid for upload

Upload it to Google Drive and share the link.

[biker2k]

https://drive.google.com/drive/folde...-H?usp=sharing


hows that

[KingLT1]

It's timing related just as I thought. You are seeing single digit timing(3-8 degrees) on tip in the high load(0-6psi) lower rpm(18-2200rpm) areas of the timing map(bottom left quadrant). That will make the car feel anemic part throttle.

[biker2k]

and you're thinking that's its the tuning not car doing it because it needs to and if so would it be safe to bump the timing there?

i did notice no knock retard if I was looking at it right..

also looking at the other logs it doesn't look like its doing on them ..