hey,

here are my timing maps that are pre-loaded on my power FC, to me they dont look proper at all, where do they need to be modified?, is this a map i can build off of?...

my mods are an S5 TII large street ported 13b with 550cc primaries and 1600cc secondaries, power FC, FD map sensor, walbro255, full RB exhaust, BNR3 turbo, etc etc and all the supporting mods, my timing maps however seem VERY conservative....


leading


trailing

thanks guys, i have to come up with some sort of map in the next day or so!...

and yes, i entered the entire thing into excel, i had spare time on my hands and dont have the date software for my power FC....

 

I'm assuming stock MAP sensor here? Need the Column scaling.

B

 

it's an FD map sensor....

column scaling?, like, at which cube the RPM sits at?...

 

In the other thread you stated that your car was going to be tuned Friday. This implies that someone else was going to do it. Thus the tuner should supply the map and you should not need one for free from anyone.

 

the column scaling, like what boost pressure is p20 p19 etc.. and the rpm scaling too, although that's easier to figure out based on us knowing its for a rotary.
Is it the default PFC scaling? Or was it rescaled?

Also if you can show the IGT split in split form rather then in ignition form that would make it easier for us to read.

Also as mentioned if it's getting tuned by someone how come you need maps to compare to? Is it not being tuned by a rotary tuner? if so that can be dangerous.

 

But yes just looking at the IGL map without knowing the scaling i can see it has quite a few problems. it's not very smooth and alot of places go up, down then back up instead of flowing and following a pattern.

p14 n3 has a very high number just kind of thrown in there, which may or may not even matter depending on your scaling and how quickly your turbo spools. but still makes the map look sloppy. For the most part i dont think the map is dangerous, but it def needs some work.

Remember as boost goes up timing goes down, as RPMs increase timing increases. Also don't just load someone elses map into yours, the scaling will most likely not be the same so the timing wont be at the same boost/rpm levels. Even if it were the same it needs to be optimized for your car, or you could run into problems such as a blown engine. Just a heads up

 

your split looks dangerous, at least in the few areas i did the math on. in some of the high boost high rpms it looked like a split of about 6 which should be more like 10- 15. And some vacuum areas had 0 split, which is probably not going to blow your engine but i would run more like 3. it also jumps around alot and should be more constant.

EDIT: do you have a datalogit?

 

That timing at first glance seems fine but the split is too low. Zero split for vacuum is fine I believe (not fact, just I believe ), I use it.

thewird

 

is this the pre-loaded base map from the AP Engineering PFC? If it is, would you mind posting/emailing me the .dat file? I want to take a look at it. I have an s4 T2using the FD PFC and I am very curious about the AP Engineering maps.

 

so i had my vehicle tuned yesterday with good results, but because i'm paranoid i have two concerns with the timing....

in vac. at very partial throttle i have zero split, when i get quarter throttle there's a difference of around 2 points....

when i do a neutral rev in the higher RPM's i see 42degree's of timing, is that alright?...

 

ok so i have a little bit of an issue, on my way to work i had checked my timing graphs and something caught my attention.... at cell N14 and P14 the trailing timing was ahead of the leading, it was in that general area aswell.... it was a few point difference too, should i adjust it immediatlely!?, i'm sure when i get on it, it passes through that cell, but when the tuner used his knock box there was no knock present....

also at some points i see the split at being aroun 8-9 on boost....

am i just over reacting?...

 

Since the DL is the only true/best way to make PFC changes, I do not even waste my time looking at map in spread sheet format. It just takes too friggin long to do it. BUY a DL, then it will be easy to figure out what is wrong.

If you tuner did not adjust split to be correct and have smooth transistions, then he/she are usless idiots.

 

Lol don't you love how blunt chuck is ? But he's right. I don't think you have a very good tuner. If you have split that low, in moderate to high boost areas and especially if it's negative split then thats bad. The other split areas might be okay it partly depends on your igl timing and also how much on the edge you want to be. Personally i don't go lower then 10 split in higher boost areas. A datalogit should be on your shopping list if you want to effectively tune your car. It just makes it so much easier

 

if i was to go across the board and drop the trailing timing a few points in each cell, would that help with the split?...

he had mentioned that the power FC does the split automatically?...

 

The PFC will fire the trailing automatically but according to leading advance. So whatever he said is a moot point really unless he meant something else.

My recommendation is to set split to 0 everywhere in vacuum and then ramp up linearly (as best as possible) to 11* split by 20000 Load.

B

 

should i adjust the leading and trailing for the split or is there some other way to adjust the split....

i typed out my graphs for leading and trailing and i'm trying to adjust it so there's a little bit of split before full boost, when i'm done this should i enter it into the PFC or am i wasting my time?...

i'm checking now and from N10 and on the trailing is ahead of the leading by quite a bit, at some places around 10degree's where the trailing is ahead of the leading....

 

so you're saying under boost he tuned the trailing up to -10 degree split? you don't want negative split anywhere under boost. I hope you didnt pay money for this tune. Can you post the actual maps that you have? You really need a datalogit it will help you alot, and it will help us help you too.

 

I agree. For my own curiosity, I'd like to see the IGL and IGT tables too.

B

 

i can post the table's for sure, i was boosting the vehicle yesterday and it does NOT go into negetive split when i'm on the gas, only a few degree's on decel when i push the clutch in, on the maps the trailing at some points is negetive compared to the leading maps....

i'll post the maps later, i made some adjustments myself to smooth it out from the one's i'll be posting, for the most part the entire map is very conservative, it's not running high advanced on either map especially when boost come's on, and around a 10degree split is mainained the entire time when full boost is met....

 

ok so i'm kind of freaked out about the car now, i'm not sure how or why this started but the idle is kinda rough and when i first get back into the car even if i have been driving it tries to stall out on me and has....

i figured it was a huge vac. leak but it drives perfectly fine above 2000rpm....

i pinned it in 2nd today and the boost jumped up and spiked at 17.6psi!... ofcourse i got off it real quick before anything could have happened but what could cause this sudden change in boost and idle?, i'm going to check the TPS later tonight, it might be out of whack after the tune.... maybe?...

also i found a nice setting on my power FC where i can adjust the split for the entire mapping, but when i shut the car off it will not save, i adjusted the trailing for -2 across the board so my split would be good now!...

i'm very sure it's a horrid vac. leak but everything looks fine at first glance, let me know if you guys have any idea's....

 

check your map sensor(line), then do a compression test.

if you adjust your trailing to -2 across the board then your split won't be consistent if i'm understanding correctly. Unless the tuner has a set timing under boost or something strange. Hopefully your motor is alright. and if it is, for the motor's sake you should get a datalogit and get it tuned correctly. or take it to someone that knows what they are doing. I would never take my car to someone if i felt i was going to second guess everything they did.

 

What do you mean adjusted the trailing for -2 across the board?!?

B

 

like, there's a setting on the power FC that will adjust the trailing timing across the board by whatever i set it too if i feel i wanted to do so....

it's under something along the lines of ignl/t fi. or something along those lines....

the car's just running like crap now, it sounds as if there's an exhaust leak around the turbo aswell....

 

I think you should stop tinkering until you get a datalogit and show us your map...

thewird

 

i checked the TPS and what-not, it was out a little bit but nothing outstanding....

i also lost my headlights and brake lights today, i dont know why or how....

the car idles with a couple blips and after a neutral rev the car chokes then makes the revvs come back up....

i dont have a datalogit at the moment, so if me taking screen shots of the excel cells that i filled in and entered works, i'll post those up....