Sorry my engine and tranny is still looking for the slightly damaged body (roller) for testing so the only ones enjoying it are the pigeons, I am building the whole enchillada piece buy piece. I was lucky enough to spend a some years in the turbine/compressor area as a test tech and what I found out is all compressors all do the same thing Suck and Blow air I think by re-pulling the SC will just raise the pressure which I think 6psi is safe and dependable, but the question is to me where in the RPM band do you want the power. If you move to a S trim charger it will be slower to spin up but it will also give you the power down lower in the RPM band and still maintain the 6psi target point. I am piecing a website together of some of the stuff I have done more incomplete then complete but your welcome to look at pictures for fun. Sorry could not help with real test statistics.

http://www.webbspot.com/porsche/index.html

 

Deputy I am curious of one thing during your up comming dyno testing is how do they check for pressure manifold leaks. Is it computer readouts for pressure loss or soap in a spray bottle? I would be interested to know. Hope all goes well.

 

What was the solution?

 

I had no issues when I tracked my car with the SC.

oil feed lines suck... if not for that clamp...I'd still be driving my car

 

The oil feed line coming of was an installer's problem and not the design. If it was installed properly, if would never come off.

 

Who said it came off....?

 

Did the hose rub against a clamp and tear?

 

A clamp rubbed a hole right thru it.

 

Cool website mother. How are you going to get that motor back into the doner car with all the extra stuff installed?

Dyno appt is at 11am tomorrow. Not sure how we'll check for boost leaks. I guess if it puts up some good numbers then i won't worry about it. Soapy water is a good idea though. It'd be really hard to check all the hoses though as some are completely out or reach and almost out of view.

Mother, what are you going to do to control the ecu?

 

This is a project I've been thinking about. Lease is up on my Turbo next April and I really miss my '00 996. Thought about finding a good one and installing the SC. I apologize in advance if this question has already been addressed, but what about the high compresion ratio of the 996 engine? I know that all forced induction engines have a lower comp ratio than N/As. Is it necessary that the CR be dropped or is the original CR within the safety limits of the engine?

 

Bob, the oem compression ratio is very safe given the low boost generated by the SC's.

 

Thank and I knew I was forgetting something! Actually the system needed to be installed torqued and checked for pulley alignment, manifold connections etc and it will need to come back off prior to engine install. When I was in test cell we used to do a visual insp then leak check (at idle) prior to the performance tests (Dyno water jet type) this would just save me a step in troubleshooting performance problems if they occur down the line. I agree the discharge connections are in a difficult area on your car at least the one coming from the SC discharge. I'm still thinking on that one I was down at Vivid racing and they would love to test it but they use a piggy back style (I think upsolute) computer. We touched on some areas that I would like one was a computer that came with a set of preset Maps ( 3.4 ltr with fabspeed mufflers, fabspeed mufflers with headers etc) that are preset for common upgrades you may make down the road and could just plugin to my laptop and flash. The most used I guess is the GIAC which seems to be bullit proof. Well may your HP numbers be high and temps low.

 

Hot off the presses. Here's the "after" dyno run. I need to get all my dyno runs emailed to me at some point, and for some reason they did not overlay my best "stock" run. It was close, so it's good enough for this comparison.

Not too shabby though. Over 400 uncorrected HP to the wheels. It was actually considerably lower with the corrected numbers so we went with the uncorrected. Nice and cool out today (low 80's)with low humidity.

The only issue, and there may not really be one, is the air fuel ratio. The stock run was spot on to what stock should have been, but this "after run" shows a lean condition. Their AF meter may be out of calibration though.

I am considering adding a boost/AF guage. Any recommendations?

 

Nice gain.

Any info on what a/f Evo shoots for?

 

Should maintain stock ratios. Based on the fact that there were no cel's or serious power loss, it's probably a mis calibrated AF sensor.