My first Audi - 2001.5 S4 with Custom Single Turbo setup...

[haggard69er]

ah yes, phila_dot and bisch, thank you so much for taking your time to do this :)

[Bische]

Glad to see you got the 5120 up and running.

[britishturbo]

Glad to see you got the 5120 up and running.

Me too man!
Many thanks to you for doing the hard work!
If I'm ever up your way I'll buy you a beer ;-)

[Bische]

Me too man!
Many thanks to you for doing the hard work!
If I'm ever up your way I'll buy you a beer ;-)

Haha, do I hear a roadtrip?

What did you use to plot those tq/power graphs btw?

[britishturbo]

Haha, do I hear a roadtrip?

What did you use to plot those tq/power graphs btw?

Well its a long trip from the US... haha. But... I might be back in the UK for work very soon.

Its a program called Virtual Dyno. I can send you a link if you can't find it.

[britishturbo]

So I had to go out of state for a few days so now I'm back int he act of dialing things back in and doing testing on the 5 bar MAP code.

Because I didn't want to wait for a 4 bar MAP sensor to come from Europe I just went ahead and tore my stock 2.5 bar sensor apart and retrofitted a Frescale 4 bar MAP sensor into the stock sensor guts :-)
Works perfectly.

It's nice to finally be able to see and tune for real boost numbers!

[jibberjive]

^^Deets?

[britishturbo]

^^Deets?

Which part? The MAP sensor or the tuning side? lol

I'm analyzing some logs right now :-)

[jibberjive]

MAP sensor (part numbers possibly for the retrofit). I understand the software part.

[britishturbo]

MAP sensor (part numbers possibly for the retrofit). I understand the software part.

PM me your address and I can send you a MAP sensor... I have a bunch of them lol

http://www.freescale.com/files/senso.../MPXH6400A.pdf

I have the 3 bar and 4 bar version:


Here's a pic of the half done internals... it's a little ghetto... but it worked:


Stock sensor looks like this when you open it up:


If i have time I'll design a little PCB to replace the stock one...

[britishturbo]

But if you don't care about stock look or fitment then this 5 Bar sensor from AEM is in stock at Summit and is only $63.
I'm thinking of getting one of these myself.

http://www.summitracing.com/parts/av...1-75/overview/

[britishturbo]

Here's a log from the 4 bar map sensor showing ~24psi. More than the ME7 can normally read :-)

[jibberjive]

Thanks for the info and pics. That's a little bit more plastic cutting than I anticipated... I think I'll just order the OEM fit TDi sensor.

BTW, if you go with that AEM style sensor, I recommend the stainless one over the brass one (though it is twice the cost), as it's got an accuracy of +/- 0.5% rather than +/- 3% for the brass.

http://www.aemelectronics.com/5-bar-...sensor-kit-655

Ultimate accuracy doesn't always matter, but when the scale is so large at 5bar (and people are likely to really only read up to less than 4 bar MAX on their S4), that added accuracy can add some meaningful resolution to the MAP readings. The stainless version's accuracy equates to +/- 0.36 psi, and the brass version equates to +/- 2.175 psi. A potential 4+ psi swing of potential inaccuracy is not insignificant when people are looking at values like 20 psi. If you decide to go that route, let me know and I can hook you up on price with that sensor with my business accounts (though it looks like you've already got your solution).

[britishturbo]

Thanks for the info and pics. That's a little bit more plastic cutting than I anticipated... I think I'll just order the OEM fit TDi sensor.

BTW, if you go with that AEM style sensor, I recommend the stainless one over the brass one (though it is twice the cost), as it's got an accuracy of +/- 0.5% rather than +/- 3% for the brass.

http://www.aemelectronics.com/5-bar-...sensor-kit-655

Ultimate accuracy doesn't always matter, but when the scale is so large at 5bar (and people are likely to really read up to less than 4 bar on their S4), that added accuracy can add some meaningful resolution to the MAP readings. The stainless version's equates to +/- 0.36 psi, and the brass version equates to +/- 2.175 psi. Over 2 psi of potential inaccuracy in either direction is not insignificant when people are looking at values like 20 psi. If you decide to go that route, let me know and I can hook you up on price with my business account (though it looks like you've already got your solution).

Interesting... I hadn't looked into the specs on the AEM sensors... I will have to look into that further!
And I'll let you know if I need one... Cheers.
1

[Bische]

Well its a long trip from the US... haha. But... I might be back in the UK for work very soon.

Its a program called Virtual Dyno. I can send you a link if you can't find it.

I see, lmk if you are going to visit sweden, im up for beer and Motronic nerding

NP, I have found it. Maybe we can talk to the author and make him add a ME7logger profile? Sucks to have to edit the logs for the app to be able to read it.

[britishturbo]

I see, lmk if you are going to visit sweden, im up for beer and Motronic nerding

NP, I have found it. Maybe we can talk to the author and make him add a ME7logger profile? Sucks to have to edit the logs for the app to be able to read it.

If you go into options you can tell it the names to use.
All I do is strip out the first section of the file so that the first line has the names for each column.

[naudlee]

hah, motorola maps stuffed in there like the honda days! i made a pretty penny putting those together and selling them a while back! freescale got smart!

[britishturbo]

hah, motorola maps stuffed in there like the honda days! i made a pretty penny putting those together and selling them a while back! freescale got smart!

I still have bags of sample sensors from them ;-)

[britishturbo]

I'm getting things dialed back in with the HPX MAF sensor and 4 Bar MAP sensor.
This was the drive to work today. 2 runs 30 mins apart. Very consistent.
Still very much on the rich side.

[Monty23]

Car looks to be running great! Does your trans feel any better?

[britishturbo]

Car looks to be running great! Does your trans feel any better?

Yeah the car feels great!
I need to order a stiffer spring for my wastegate though lol.
I haven't had a chance to check out the linkage yet but for the most part it's been a lot better. So hopefully it will be fine until I do the engine swap :-)

[Monty23]

What wastegate psi spring do you have now?

[britishturbo]

What wastegate psi spring do you have now?

12psi

[britishturbo]

3.0 crank clean and polished :-)

[mightemouce]

This thread is pretty much the only reason I come on audizine lately

[Rdp616]

Is your trans okay now British?

[britishturbo]

Is your trans okay now British?

Its good for the most part. Certainly more than usable lol.

[Rdp616]

Its good for the most part. Certainly more than usable lol.

Awesome! It is a bit nerve racking wondering if it will get better. Good to hear.

[Monty23]

mmmmm fresh crank.... can you take some pictures of the 2.7 crank next to the 3.0 crank when you get a chance, I would like to see how much less material the 3.0 crank has.

[UkuRiSh]

mmmmm fresh crank.... can you take some pictures of the 2.7 crank next to the 3.0 crank when you get a chance, I would like to see how much less material the 3.0 crank has.

Can you say which one is 3.0 ? :)

[britishturbo]

Can you say which one is 3.0 ? :)

3.0 on left? :-)

[S4 00 2.7]

Great progress! Keep updating, please!

[UkuRiSh]

3.0 on left? :-)

On right ! :)

[AudiNFS]

I love this thread. Wish I had enough knowledge to contribute more.

BT- I'd love to come see the car when you're done with it. Plase allow us less privileged/mechanical to come see it.

[britishturbo]

I love this thread. Wish I had enough knowledge to contribute more.

BT- I'd love to come see the car when you're done with it. Plase allow us less privileged/mechanical to come see it.

Thanks man, I appreciate the kind words.
And you or anyone else is more than welcome to come check the car out any time.
It's not finished yet, still rough around the edges in the engine bay but that doesn't stop me driving it every day lol.

[Monty23]

Thanks man, I appreciate the kind words.
And you or anyone else is more than welcome to come check the car out any time.
It's not finished yet, still rough around the edges in the engine bay but that doesn't stop me driving it every day lol.

2x here

[britishturbo]

I've put almost 2500 miles on her now :-)

[Monty23]

I've put almost 2500 miles on her now :-)

Lucky bastard! I only have a 5 minute ride to work but I always take the "scenic route" so the engine gets to operating temp! I'm around 800ish...

[britishturbo]

Lucky bastard! I only have a 5 minute ride to work but I always take the "scenic route" so the engine gets to operating temp! I'm around 800ish...

35 miles each way to work for me... about 45 mins average.

[Monty23]

35 miles each way to work for me... about 45 mins average.

So that's how you get so much logging time lol

I bet you enjoy getting up in the morning and leaving work ;)