ealoken

Hi, first i want to say thanks for all the help and good spirit in this forum

I have a 1986 951 that is getting a makeover.

Specs:

Vitesse stage 2 turbo
750cc injectors
40mm tial -WG
4" LR exhaust
Yellow adjustable konis
Turbo gearbox with LSD
Bigger swaybars.

This winter im installing:

Emu ecu engine management system with a new engine harnes, as i dont like 30 year old cables.
Weichers rollcage
8,5+10" azev a wheele
235/45-17 and 255/40-17 Toyo R888

944crazy

Nice car.

How do you like the Vitesse Stage 2 turbo? How much boost do you run, and what rpm do you get full boost by? Does the boost decline close to redline? Got any dyno plots?

ealoken

Thanks

Well, its a bit laggy and old, im planing a 3L16V with another turbo in about 2 years.
But, i think getting rid of the old piggyback Vittesseracing ( wich is a SMT6), and installing a modern EMU Ecu will do a lot of respons.

Meaby the car can to 800 km to 80 L of gasoline, now i have been doing 500 km to 80L.

944crazy

Oh, I wouldn't have thought that turbo is laggy. How laggy exactly? I'm asking because I'm considering the vitesse stage 2 as a future upgrade for my car.

500km is about all I get out of tank as well...though I am a bit of a lead foot.

ealoken

On cruising AF is about 10-11,5, schould be 13 ish with no boost.

Trackday use was 300km on 80L

So my engine is getting "washed" in fuel.

odonnell

I aim for 15:1 on cruise... but I don't have a cat. Even with one, 14-14.7 is still plenty safe. Better gas mileage than stock. I never measured the AFR on the cruise portion of the stock tune but I'd imagine it's a little fatter.

ealoken

No cat here either.
First i need to make the new engine harness, and make my rear seat delete plug, mount my Stilo intercom and then, in january go to my tuner

fast951

Your car should not run 10-11 AFRs while cruising. The software is configured to run 13.5-14.5:1 while cruising, and it uses closed loop.
Apparently there is something wrong with your setup, either the PiggiBack is tuned incorrectly, a bad ground (which is common) or a few more items to check. May be too late now, as you already pulled off the engine management.

The kit on your car is roughly 10-12 years old. The turbo you have is very fast spooling, but the rich AFRs and possibly the boost control method are hurting spool.

Good luck with your project.

ealoken

Hi, i tried to send you an email, do you have any specs on my turbo? compressor map?

Im taking the old out, i need a standalone.


thanks

fast951

Yes I replied to your email shortly after I received it. Your turbo will support 380-400rwhp with the proper octane. I recall you mentioned the car running 340-345rwhp on pump gas for the past 7-8 years or so.
With E85, race gas and/or water Methanol you can run more boost and make more power.

ealoken

My email has eaten your reply, i think.

Thanks
im aiming for 380-400, yes the turbo was bought in 2007 from you

ealoken

Todays evening in the workshop, got my brackets welded by a friend.
Got my vibrodamping installed, and some pictures of later goodies.






The bracket for my rollcage





Vibromats sound dampeing



Aquasump sylinder



Stilo intercom central.





WRC stilo headset

gruhsy

Vibromat work looks good.

ealoken

thanks, spent 3.5 hours on that, but i hope it will kill some sound.
Was 90db in 130 km/h inside the car.

gruhsy

wow thats actually pretty loud. 80db over 8 hrs is the limit exposure threshold at my work, and because sound is logarithmic 90 is freakin loud

For comparison the paint booth at my work which is running at this very moment....is 85 db inside.