DarrenD

We got the Rogue datalogger working today which is a huge help but we can't seem to get the AEM wideband to register. There is no datastream file for the aem wideband so we just use the Automoeter one and everything else works ok that way.
We got the car to idle well, and it cruises well, pulls hard at WOT but the issue is in between shifts, it bogs for a second before "clearing it's throat" and taking off again. Not sure what is causing it to bog. If we can figure that part out, it'll be really good and ready for the dyno.

DarrenD

So the crankcase ventilation was hooked up incorrectly and now that's its right the car runs beautifully. The other problem is my brother inadvertently installed NA injectors and not the turbo injectors. Once we install those the car should be spot on. I will just need to fine tune the fueling and ignition at that point and we should be good. We got it running perfect up until 4k and it pulls like a beast!! Lights the tires up everywhere.

Noahs944

DarrenD,
NICELY DONE.

DarrenD

Thanks Noah. My brother ordered a knock sensor setup today too so I'm really excited for that. Once it's all sorted I'll be sure to post up some videos.

DarrenD

Knock sensor should be installed today and our tuning journey can continue. I've pulled a considerable amount of timing and it still pulls like a freight train at 6psi. I am having trouble with it in closed loop at idle. It's either slightly rich and the DME wants to lean it out too much and the idle is inconsistent or it's just way too rich but idles well. I think we'll stick with the fat idle and let the DME deal with it.
The car gets rubber in third gear now. Having owned a 944 Turbo, I will take the power delivery of the SC anyday. Once we're all sorted with the street tuning it'll go to the dyno, maybe this week. I can't wait to see what the power numbers look like. I know we won't see turbo like numbers but it's just so much more usable power now and corner exits at the track and autocross should be so much better. I'm guessing we're seeing approx. 50 more hp, which doesn't sound like much but the car weighs around 2500 lbs and it's just the perfect amount.

V2Rocket

IIRC in tunerpro you should be able to raise the closed loop O2 sensor RPM so it idles open loop, so the dme wont try to correct it. then you can manually lean it out.

Noahs944

Darren,
I learned the hard way with my INNOVATIVE wide band:
Don't ever run the engine with the o2 sensor not powered (don't run engine with sensor installed in bung but not powered).
I think it needs the heater or its kaput. I dunno if none wide band is also like this.
Based on your description, I'm curious if there might be a vacuum leak at idle?
...just spitballin' here bro. Pumped to see your progression. IMO your engine looks better than the factory 944/951 factory engines.

DarrenD

I've been looking to try this but I can't seem to figure out how to get it to idle in open loop? Any idea what parameter I need to change in TPRT?

DarrenD

Thanks Noah. We looked everywhere for a vacuum leak, and it's all good. We had a MAF sensor failure which was a huge pain and the fact that Rogue used a Ford 3L3Z MAF sensor which you can no longer get. Only the 3L3A is available from Ford(and even Lindsey) which doesn't have the correct AIT reading. I don't think anything we do with the Rogue setup utilizes AIT so I think it's still ok.
We've pulled timing down to 23 degrees at WOT and no knock(using the new Knocklink setup) and still good power. The car needs a catch can(closed system) as were pulling so much air into the SC that its pulling oil from the AOS. Pretty minor but I think that's why we hurt the first MAF sensor. We tried cleaning the sensor but no luck.
This coming Wednesday is the first trackday with the SC on the car so I can tune it at the track and after we're going to hit the dyno to hopefully get everything spot on.

fasteddie313

Can you not calibrate it to run just about any MAF?
It doesn't have sensor calibration options?

V2Rocket

IIRC you can change the RPM at which the O2 sensor "turns on". Might be called O2 minimum RPM or something like that.
When I had NA tune and the tuner I remember Joshua telling me to set that to 2000rpm or something so I could still benefit from O2 correction while cruising but it helped stabilize idle and low-load.

"Constants/Scalars" -> "Closed loop RPM limit"...assuming your setup still looks like this old screenshot from Joshua (top left)

Porsche94483

where is the flowmeter

DarrenD

Took the car to the track on Wednesday and it was fantastic. Until the reference sensor started failing. Then we had to limp it home where it finally died and wouldn't restart. My brother got jittery and decided to pull all the SC stuff off, fix what needs to be fixed and maybe he'll look at re-installing. He's struggling with the fact that he doesn't understand how to tune it and leans on me for all of it. Hopefully I can convince him to take another shot at it, the car was SO good at the track on Wednesday. We had a Dyno session scheduled for that afternoon, but once the car started dying we had to cancel. It was a pretty disappointing end to what started off as an amazing day. Custom Fab and tuning isn't easy and definitely isn't for everyone. Personally I love it but I wouldn't even think about SC'ing my Boxster unless I had super deep pockets.

Here's hoping I get another shot at it. Otherwise I may have to buy another 944 one day.........

DarrenD

It's a custom stainless MAF tube I built. It's between the 2 silicone coupler on the intake tube.

DarrenD

Update!

VEMS has been ordered. The Supercharger will live again. We've got some big plans this year including going VEMS Standalone, improving the SC intake and outlet piping, running a second tensioner for better SC belt wrap and more. Stay tuned, we're going to get this right eventually!