TD_D mod journey. From stock to the 'bastardmobile'

[HolyCrapItsFast]

Thank you for hanging in there. I know it is late over there.

The I, S and S# modes switch between three different tables that ultimately changes how and when the throttle plate opens. One thing I noticed in your recent files is the idle was not the same as what is defined in your map for idle speed. Since the I,S,S# tables define the throttle opening angle I will have to take a look to see why that is happening.

I will have a look at the files you sent me now and have something for you to try tomorrow. :tup:

 

[Td_d]

Thanks George - I thought the idle difference might have some bearing on the fueling issues... Running the numbers, slope is looking decidedly flat thus far!

 

[HolyCrapItsFast]

Here ya go...

This time I made adjustments to MAF calibration. This is a rough correction but things should improve greatly. I also made adjustments to idle speed (looked a little funny) and I, S# tables (they looked funny also).

Lets see if the idle smooths out. I set it to 800rpm which is reasonable for larger than stock injectors. As usual let the car come up to temp and then reset and flash. Then let it idle and stabilize trims for at least 2 minutes. Then your good to log with nice smooth throttle inputs. This will allow us to fine tune the closed loop end of the MAF on the next run and we should be good with closed loop. :tup:

http://www.drift-ready.com/Files/TD_D/2-07-2011-A.zip

 

[Td_d]

Ok - managed get a nice long drive back from work, highway and general driving. Car's was also nicely warmed up. Wow, different animal altogether - idle was perfect, no dips, and generally smooth (slight lumpiness here and there, but not as defined).

http://dl.dropbox.com/u/3099895/TD_D_7_Feb_loga.zip



Looking as flat as a supermodel's chest :lol:

 

[HolyCrapItsFast]

Okay good!

Now on to some fine tuning!

 

[HolyCrapItsFast]

Nice! opcorn:

hehe.

 

[HolyCrapItsFast]

Okay. Hopefully this will do it for closed loop fueling.

http://www.drift-ready.com/Files/TD_D/2-07-2011-B.zip

No need for such a long log this time. Lets see what this does.

 

[Td_d]

Great - I'll flash it and test it on the way to work.

 

[Td_d]

Right - here ya go! Scaling's looking good - mostly under the +-5% range - you can feel it driving too, much smoother.

So guess what's arrived... my ID860's - at least these came with a full set of published latencies. I think the MAF scaling is now also far more accurate, should make dialing them in much easier since you've cleaned out the various maps.

I meant to ask you - the idle is now _rock_ steady, identical at S and S# - what exactly did you tweak?

http://dl.dropbox.com/u/3099895/TD_D_8_Feb_loga.zip

 

[HolyCrapItsFast]

two things... I copied the I,S and S# tables from the stock tune and just made some very minor changes to the S# table to improve spirited driving. Then I made all of the idle speed tables the same and set them all for 800rpm above a certain engine temp.

I'm going to make just one more adjustment to the maf because I'm anal. After that are you thinking you want to install your ID860's?

What I'm thinking is if you do want to install the new injectors we may have to re calibrate the MAF because I still think we are compensating for latency on this tune. So... It doesn't make much sense for us to continue this tune if you are going to change out the injectors.

Either way I am up for it.:tup: Let me know what you want to do and we can get to work

 

[Td_d]

I think it's going to take a couple of days to get the car into the shop for the new injectors - so if you're ok with it, I wouldn't mind continuing with the RC750's - it's really beginning to take shape.

I really appreciate all the time you've allocated to this - I know it's taking quite a bit of number crunching 'soul-searching' in the background. It's been a fascinating exercise for me, I've already learnt so much!

 

[HolyCrapItsFast]

I think it's going to take a couple of days to get the car into the shop for the new injectors - so if you're ok with it, I wouldn't mind continuing with the RC750's - it's really beginning to take shape.

I really appreciate all the time you've allocated to this - I know it's taking quite a bit of number crunching 'soul-searching' in the background. It's been a fascinating exercise for me, I've already learnt so much!

Absolutely no problem! This is my only goal here is to eventually get you to a point where you need not rely on anyone. Soon eneough I'm just going to be able to advise you and sit back and just watch.

It's been a long road so far but the results are speaking for themselves.

I will make one more adjustment to MAF calibration and focus on the idle trims... You will see that with each successive adjustment the A/F learned column shows more zeros than anything. A perfect tune will only show errors at idle and be well with in +/- 6%. You can see that we are just about there.

Ultimately anything with in +/- 6% is ideal. You will never get it perfect and with changes in environment over time, the tune will change along with it anyway. So the tune may be perfect today but change tomorrow. That is perfectly normal. We just want to get it somewhere in the middle.

Okay... Enough of my rambles... I will have a look at the logs and make another revision.

Oh! BTW... You have ABSOLUTELY no knock. That's great! However don't go WOT till we have had a chance to look at open loop fuel. Did you manage to find a wide band?

 

[Td_d]

Hi - well, it looks like the injectors are not here, yeesh, parts and this side of the world, sigh... Oh well - onwards ho!

I'm working on rustling up a wideband, should be able to borrow one from the mechanic directly in the next couple of days - will give us a day or two to finesse the closed loop.

I've seen that there's no knock, that's a good sign - I've been using octane booster (which you have to here since we only have US equivilant 91). I normally use toluene, but I've not had a chance to stock up, and it's far more convenient to use NF (albeit hella expensive). I thought it would also be prudent, in case the CL/OL transition was significantly lean due to the tuning that as high an octane as possible would be smart. I'm running the equivilant of 94 US + plus meth.

 

[Td_d]

BTW - I'm seriously thinking of actually buying a wideband - which would you recommend (obviously there's only 3 that are Romraider compatible). I was initially looking at the Innovate LC1.

 

[HolyCrapItsFast]

Hi - well, it looks like the injectors are not here, yeesh, parts and this side of the world, sigh... Oh well - onwards ho!

I'm working on rustling up a wideband, should be able to borrow one from the mechanic directly in the next couple of days - will give us a day or two to finesse the closed loop.

I've seen that there's no knock, that's a good sign - I've been using octane booster (which you have to here since we only have US equivilant 91). I normally use toluene, but I've not had a chance to stock up, and it's far more convenient to use NF (albeit hella expensive). I thought it would also be prudent, in case the CL/OL transition was significantly lean due to the tuning that as high an octane as possible would be smart. I'm running the equivilant of 94 US + plus meth.

Okay. So you currently have the meth active right?. I was kind of curious about that. I also had questions about your boost and turbo settings. If you could give me an idea of what turbo and boost controller you might have and your waste gate setup, this would avoid any surprises later.

 

[Td_d]

Yup - meth is on. Boost controller is a Turbosmart E-street 40, turbo is a Dom 3 XTR. IIRC wastegate is 15PSI - but I will need to check.

 

[HolyCrapItsFast]

BTW - I'm seriously thinking of actually buying a wideband - which would you recommend (obviously there's only 3 that are Romraider compatible). I was initially looking at the Innovate LC1.

Innovate is a good one :tup:

Any way here is the next rendition.

http://www.drift-ready.com/Files/TD_D/TD_D_2-08-2011-A.zip

I separated idle trims from cruise trims and applied each individually. For the idle trims I took only the A/F Learned column and anything under 1000rpm to apply a rough correction and the cruise was both A/F correction and learned and everything above 1000rpm.

I applied the same filters as before to both

 

[HolyCrapItsFast]

Yup - meth is on. Boost controller is a Turbosmart E-street 40, turbo is a Dom 3 XTR. IIRC wastegate is 15PSI - but I will need to check.

Okay cool... Is the controller taking full control of the turbo boost or is it working in combination with the ECU.

I ask this because the wastegate and turbo dynamics setting in the ECU look strange to me.

 

[Td_d]

Great stuff, on my way home now - so will flash and get some logs in.

 

[Td_d]

Alright - here it is - http://dl.dropbox.com/u/3099895/TD_D_8_Feb_loga.zip