D-Zug Tours RSR dyno

[pkracer21j]

This morning it was around 60 degrees and misting rain, I think it may have been a more appropriate day to dyno a jag or aston rather then a Porsche, but we needed a baseline dyno before we change to our Al Kosmal licensed ITB/EFI kit. The engine specs are:
3.2 SS SC engine 9.5:1 pistons, 964 cams and SSI's/megaphones running stock CIS injection.
We put down a repeatable 190hp and 184tq at the wheels.

[Flat6pac]

Holding good power, it ll be good to see what the change does
Bruce

[Craig T]

I'm on pins and needles here waiting for the results of the swap. I have 46mm PMO's on my new 3.4 liter twin plug and I'm having the typical carb issues. The ITB or EFI swap is coming. I just need a little push. Good results from this thread could do it.

[Flat6Heaven]

I am "on the list" for an Al Kosmal / D-Zug ITB setup. Very excited!

Looking forward to the results!

Ben.

[James Brown]

OOOOOOOOOOOOOOh this should be good

[juicersr]

Just a little sneak peek at our progress....

We're doing all the little things as we go (bracket fabrication, creating an organized and labelled wiring harness, measured hose lengths, etc etc) to make this into a true 'plug and play' kit for guys that want to go EFI-ITB in a comprehensive and relatively cost-effective fashion.

As we are doing this while bringing our 930 shifter to market while concurrently keeping up with parts production, it is taking a little longer than our usual weekend or two

Fire up, tuning and full installation thread soon.

[Flat6Heaven]

The ethos behind D-Zug and Al's work is right on and I am very much looking forward to running your ITB system.

Your throttle pedal is imho a great addition to my SC, and Al's grille adds a nice touch of retro-coolness to the exterior. Really enjoy both produkts!

Are you planning on offering an ignition setup as well?

TIA,
Ben.

[juicersr]

Originally Posted by Flat6Heaven

The ethos behind D-Zug and Al's work is right on and I am very much looking forward to running your ITB system.

Your throttle pedal is imho a great addition to my SC, and Al's grille adds a nice touch of retro-coolness to the exterior. Really enjoy both produkts!

Are you planning on offering an ignition setup as well?

TIA,
Ben.

Thanks Ben, BTW, what's going on over there... r u doing PR for us? We have sold a ton of pedals to France over the last month!

No plans at the moment for ignition for the N/A kit. However, once we have this dialed in, being turbo guys at heart, we are already planning a forced induction version (935/962 style set-up) in which we will prolly have to do spark mgmt.

[911Freak]

The new ITB setup, keeps the stock CIS pistons? Effectively keeping the P&Cs stock with a top end induction plug & play?

Love what you guys are doing - btw

911Freak gives this two freakish thumbs up

[al lkosmal]

Justin,
Looking good. As usual, you are doing nice work. Do you have the A/F chart recording, as well. I expect that the difference in tune-ability (optimized A/F ratio at all loads/RPMs) between carbs and EFI will be significant, but the difference between CIS and EFI, may also prove to be interesting. Although a well set up CIS system, works very well, it would be another point of comparison.

regards,
Al

PS: I was down at the RGruppe Treffen in Solvang, CA. a couple of weeks ago (nice little 3000 mile round trip with the PNW crew) and there was quite bit of interest in the EFI work.

[juicersr]

Originally Posted by al lkosmal

Justin,
Looking good. As usual, you are doing nice work. Do you have the A/F chart recording, as well. I expect that the difference in tune-ability (optimized A/F ratio at all loads/RPMs) between carbs and EFI will be significant, but the difference between CIS and EFI, may also prove to be interesting. Although a well set up CIS system, works very well, it would be another point of comparison.

regards,
Al

PS: I was down at the RGruppe Treffen in Solvang, CA. a couple of weeks ago (nice little 3000 mile round trip with the PNW crew) and there was quite bit of interest in the EFI work.

Al, interesting you should mention the CIS, as we seemed to have a rich spike up top that we played with to get more power on the dyno, to no avail. Due to time constraints, we did not get AFRs on the dyno pulls.

This system will primarily be an alternative to carbs using proven and reasonably priced components. For guys not savvy with carb tuning, or more comfortable with a laptop, this will provide an easier way to eliminate lean or rich spots on hotrod motors or those with unique cam/displacement combos.

I suspect many guys with stock motors will probably keep being completely happy to keep their CIS systems going, but the success of the Tbitz kit has shown that, like MFI, the components of CIS are not getting any younger. At some pont, all the hair pulling to keep AAVs, WURs, fuel heads, etc in good working order for a quick starting and smooth running 911 will wear the patience of many, including yours truly.

Oh, and nothing quite like the sex of appeal of ITB's sittin under you lid

[al lkosmal]

Originally Posted by juicersr

Al, interesting you should mention the CIS, as we seemed to have a rich spike up top that we played with to get more power on the dyno, to no avail. Due to time constraints, we did not get AFRs on the dyno pulls.

This system will primarily be an alternative to carbs using proven and reasonably priced components. For guys not savvy with carb tuning, or more comfortable with a laptop, this will provide an easier way to eliminate lean or rich spots on hotrod motors or those with unique cam/displacement combos.

Many guys with stock motors will probably keep being completely happy to keep their CIS systems going, but the success of the Tbitz kit has shown that, like MFI, the components of CIS are not getting any younger. At some pont, all the hair pulling to keep AAVs, WURs, fuel heads, etc in good working order for a quick starting and smooth running 911 will wear the patience of many, including yours truly.

Oh, and nothing quite like the sex of appeal of ITB's sitting under you lid

Justin....well put. All of the things you mention above, with some MFI thrown in, are the reasons that I originally designed the Speed triple EFI system. I'm expecting that through the process you are taking, you will become converts and, hopefully, will make other converts, as well. And...oh yes...they have pure, retro-cool sex appeal. Thank you for noticing.

regards,
Al

[juicersr]

Still have a few wrinkles to work out before dynoing, but the ITB music she's making so far is not too shabby...

[jsveb]

Sweet!

I just discovered this thread.

Nice Guzzi as well

[al lkosmal]

Justin,
oh yes! Great job. Sounds sweet. The retro-coolness of my S3-ITB/EFI system looks right at home in the DZug RSR and when you hear that monster go by....it's a good indication that it's more than eye-candy. When i watched/listened to that video, it put a big smile on my face.

regards,
Al

[juicersr]

Originally Posted by al lkosmal

Justin,
oh yes! Great job. Sounds sweet. The retro-coolness of my S3-ITB/EFI system looks right at home in the DZug RSR and when you hear that monster go by....it's a good indication that it's more than eye-candy. When i watched/listened to that video, it put a big smile on my face.

regards,
Al

Yup Al, def nice to have her running as good as she looks!

Gotta say tho, we would have already done the dyno session if we had ditched the distributor and gone straight to EDIS/Coil pack/crank trigger. We at D-Zug love old-skool as much as anyone, but deep-sixing the CIS while staying with the distributor keeps another old and potentially problematic link in the chain that can continue to give headaches. Getting and keeping a good tach signal going to MS is only one factor; clinging to the distributor obviously deprives you of the abililty to easily adjust timing when tuning, something critical for anyone tuning a hot motor as efficiently as possible. Phase 2 of the kit will be for those that wish to integrate complete spark control.

[juicersr]

Originally Posted by jsveb

Sweet!

I just discovered this thread.

Nice Guzzi as well

Thanks Jes. Still waiting for pix of either the 930 or Carrera coming down the Corkscew

[al lkosmal]

Justin,
I haven't used a distributor for quite some time. I've been using Ford EDIS/Crankfire. I usually advise folks to change one system at a time though...I.E. get the fuel working well and then change the ignition to EDIS/Crankfire. But you guys know what you're doing...........ditch the dizzy.

Al

PS: nice work

[juicersr]

Originally Posted by al lkosmal

Justin,
I haven't used a distributor for quite some time. I've been using Ford EDIS/Crankfire. I usually advise folks to change one system at a time though...I.E. get the fuel working well and then change the ignition to EDIS/Crankfire. But you guys know what you're doing...........ditch the dizzy.

Al

PS: nice work

Thanks Al.

We would have ditched from the start as well, but we figured a lot of guys will want to stick with the distributor, and thus wanted to deal with the issues these customers would encounter.

[jsveb]

Originally Posted by juicersr

Thanks Jes. Still waiting for pix of either the 930 or Carrera coming down the Corkscew

I been there several times already, well around, not on the track. Have been watching club racing with the kids at the cork screw - awesome track.

I can't just go down there. It has got to be part of an event of some sort - crap.

On top of that. The Carrera 3.0 is not running for the time being. Oil press issues, see text... drive the 930 everyday though


Once again, this looks awesome