special tool

I have been working on the stage 3 spoolup a little bit. Today I got the best logs yet. 14 psi @ 3209 and 15 psi @ 3254 RPM.

The throttle response HONESTLY feels like my 6.0 liter pickup truck - and I don't have to say anything about the top end, do I??

Porsche-O-Phile

This is the Vitesse stage 3 and that's it for mods, right or do you have others?

special tool

I have an Andial race cam that is NLA. The cam is probably retarding spoolup by a couple hundred revs.

evil 944t

Did you fix your exhaust yet? What is your max boost setting up to these days?

special tool

Yes, I fixed it. I was only running 18 psi this morning.
I removed the heat shields and replaced with DEI header wrap so that I can now see if there are any exhaust problems. Believe me when I tell you that the DEI wrap is WORTHWHILE.

Laust Pedersen

For comparative purposes, how did you arrive at those numbers? 4th gear on the street? Or on a dyno? Or other gears? And I assume running WOT from low rpm?

Laust

special tool

4th gear on street (only to 4200 rpm )
Foot to floor at 2100 RPM.

Corleone

Whats "DEI" wrap?

Can you give us a complete spec on your engine?

evil 944t

I have'nt used the DEI wrap on the 944t but I wrapped the exhaust on my Ducati, the exhaust goes up near my leg and then under the seat so, it keeps my ankle and butt cool! Good stuff!

How many maps per Boost level have you made?

I only run 18 and 22psi.

special tool

evil - you don't need different boost maps with John's stuff - the MAF compensates the way it should. My AFRs are the same at 15 psi and 25 psi.

Corleone - I have the stage 3, Andial race cam, Fidanza flywheel, adjustable fuel reg, Bosch 044 pump (Czech, "the real one"), zetronix datalogger.

I have to say the DEI is a good mod. You can see if your headers are broken (it is probable that they are), and I have logged that they retain more energy than the factory shields. - though you might get more longevity from shields.

Corleone

Looked in my own log now and I had 15 psi at 3150 at 3:rd gear with wot from 2000 rpm. This was with my Garret GT30/71, 53/71 mm c-wheel in .50 A/R c-house and 55/60 mm turbinwheel in .61 A/R turbinhouse.

At 3350 rpm I had 23 psi and at 3400 rpm 25 psi. This is of course a result of some boost overshots. If I had used 4:th gear I think the figures had come earlier.

I now have a new HKS 30/37S to use and I have a bit larger hotside of .73 A/R but same 55/60 mm wheel. Maybe I will have boost a couple of hundreds later. But I dont care, when I wot I do it at 4000 rpm and most important is to have instant boost from there.

BoostGuy951

Good work Special. Whats your pre Spool WOT AFR? Did you lean it out a bit? I wouldn't mind seeing the datalog.

evil 944t

Where did you get your 044 pump. Whats a good price?

hosrom_951

DEI is a brand name for an exhaust wrap, which i currently wrapped my x-over pipe with.

I also have 2" x 50' Thermo-Tec wraps not yet installed, as well as 1" x 50'. Plan on wrapping the headers......

Special Tool: How were you working on the spool? dialing in leaner AFR in earlier rpms? advancing timing?

BoostGuy951

Why not just wrap the exhaust in 100s, Hos? You are in the UAE after all!