Pelican Parts Forums - Polishing a diamond in the rough

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I agree though, the MBC commonly associated with the 934 & 935 race cars, would be more fitting in your ride...

If the car is tuned to optimum then there will be literally no difference between a EBC and a MBC.

EXCEPT...... you have a very large frame turbo and as Goran explains the EBC can hold the the solenoid closed longer to help spool time. This would also help on a CIS car with a larger turbo.

But on a EFI can tuned with raised compression and all the bell and whistles it is then a preference choice. The minuscule time differential between the two would be a mute point.

Quote:

Originally Posted by juicersr (Post 4143009)

Hmmm, seems i am getting a lot of feedback along this line. Goran, havent checked with my shop for input, but will any boost actuating solenoid work for this application, such as the one here http://www.034motorsport.com/product_info.php?products_id=480 ?
If this is indeed the safest way to go, then as much as i like the MBC concept, will steer to the EBC.

It depends on which kind of solenoid your TEC-gt supports. If TEC supports ordinary on-off two wire solenoid (which most aftermarket EFI systems do) then 034 OEM Audi AAN solenoid is OK.

Certain systems use differential three-wire solenoid which reacts even faster. In that case you can use SAAB T5 solenoid.

Regards.

I would use the Audi 2 wire, IMHO these are safe if using in a "bleed type" as when they fail, they typically don't open.

They only danger would be the signal wire shorting to ground, or a malfunction in the tec unit that grounded the solenoid all the time (not likely)

Just take careful baby steps in mapping the duty cycle and make sure your overboost protection is set...

Juicersr, did the guy over on Rennlist part with the bad boys car? IIRC he was from NJ.

Quote:

Originally Posted by 930gt-40r (Post 4143143)

Juicersr- which shifter is that in the picture?

That's a pix of the factory 935 shifter... similar to what wevo makes
http://forums.pelicanparts.com/uploa...1219862821.jpg

Nathan, you are correct sir. Matt sent his right hand man Bryan up to NJ with a suitcase and the deal was made. Strange world that of buying and selling rarified autos. Here are some pix Bryan sent of the car prior to pickup.
http://forums.pelicanparts.com/uploa...1219863202.jpg
http://forums.pelicanparts.com/uploa...1219863283.jpg

I know that money talks, but I can't help but think there will be seller's remorse on the sale of that 3.6...

Just a little update. When we started getting heavily into tuning, found that the duty cycle on the injectors was maxing out early, with possible leaking as well. This necessitated further learning on my part on duty cylces, high vs low impedance injectors aided of course by everyone here.

http://forums.pelicanparts.com/911-930-turbo-super-charging-forum/440289-fuel-injector-gurus-relation-flow-duty-cycle-impedance-boost.html

Thanks esp to GJF, DonE and GoranSmileWavy. We replaced the old 55lb low impedance injector with Accel 62 lb high impedance injectors and the car was like night and day. The TEC-Gt system has delivered with great flexibility, allowing us to iron out the idle and cold start despite higher flow. Has taken a lot of data logging and trial and error, but has been a fascinating learing curve for me and my tuning guy.

Final numbers as of tonight at 1.0 bar: 475bhp and 413lb/ft. :)

Gonna have fun with her for a while, then may take things to the next stage with cam sensor and high flow, low impedance injectors. It is a slippery slope indeed, but a fun one. Thanks guys

That's awesome Justin! Any time! I am glad I have been of an assistance. It will be interesting indeed to watch your journey on the slippery slope. :D