SPS3 Question

[A4 Moda]

for the Boost setting, what are you holding at for each channel?

For example:

boost 1= 10psi
boost 2= 12psi
boost 3 = 14 psi
boost 4= 16 psi

etc etc.

Problem is, I'm running an MBC right now, so I have my sps3 set to 9! That's all great and all, but the problem is, I'm soo fuel soaked. I'm running super super rich. I have no idea what the corresponding fuel maps vs. boost maps are. I'm running B9 whether I'm at 16psi or 22psi.

[A4 Moda]

bump

[F16HTON]

bump

Different for every car, depends on what the wastegate spring is set at.

[a4audi4fun]

So if you have an SPS3 and are running fuel rich, wouldn't the next step be to reduce the fuel adjustment ratio down a little. That's what the SPS3 manual would seem to say to adjust. No personal experience with any of this though.

[Molotov]

SPS3 doesn't change fueling on our cars, it does nothing

[A4 Moda]

400hpa4Different for every car, depends on what the wastegate spring is set at.

Thanks bud

SPS3 doesn't change fueling on our cars, it does nothing

So you're telling me that, by adjusting the N75 valve the SPS3 will tell the valve to hold boost longer, BUT, It won't add more fuel to the MIX?!?!?! How the hell does that make any sense? I'm not doubting you, just don't get it. Running 10psi (wastegate) boost pressure, and running 24 psi are two completly different worlds.

[Molotov]

no, I was saying the SPS3's mode 4 Air/Fuel doesn't do anything

[A4 Moda]

Yeah that I know,

Channel 3 (timing) and Channel 5 (boost) are the only ones I use.

I was at boost 4-5 before I started using my MBC.

just wondering if i'd be able to adjust the boost level to match my MBC.

I'm running rich big time.

no, I was saying the SPS3's mode 4 Air/Fuel doesn't do anything

[Molotov]

I'm pretty sure you only want to run 9 with an mbc.. post some logs? use lemmi to cut fueling back?

[A4 Moda]

Definitely. What logs do you want to see?

[dirtybrd]

With a MBC you want to run B9. That way the ECU will give you the correct fuel maps. Is you rich running all the time or just under boost? I would check the usual stuff, MAF, primary o2, CTS.

[A4 Moda]

it's running rich under boost. Which is better than lean.

But at idle, I'm soaked I mean SOAKED in fuel fumes.

[dirtybrd]

Are you getting any reading from the frt. o2 sensor in Vag?

[A4 Moda]

Yes I am.

What are you thinking?

Are you getting any reading from the frt. o2 sensor in Vag?