MembersPage/RandoNomm (2009-03-11 21:51:14)

Hello, I own 1991 Audi S2 coupe with 2,2L 5syl 3B engine, and my main goal is to make it run on VEMS and get power between 350-400BHP. Right now my best ET at 1/4 mile is 12,82 seconds.


Engine

VemsAudiAan shows a straightforward wiring recipe for this engine, wether

for ignition upgrade, you can either go distributerless, eg.:

The most appropriate ECU:


Chassis

Brakes: 4x zimmerman discs, ferodo brake pads, Motul RBF600 brake fluid. Front brakes are waiton for upgrade, alredy buyed wilwood 4 piston calipers and audi A8 320mm discs.

Suspension: 4x kony yellow shocks, original springs are wating for lowering ones.

Body: The car got new paint a year ago, for better cooling it has modified RS2 replica front bumper, a little wider rear bumper, loesed lower door covers, tinted windows.

Other: 034 short shifter


Plans:


Turbo update is already in my plans, garret GT3071r i think, but all this comes with VEMS ECU.

The EGT sensor replacement is becase it is now in manifold, wiht old manifold it was after the turbo.


Today I started to "play" with boost logging option.

First i needed to measure voltage @ different pressure points. I had precise boost gauge and compressor with variable output. I connected the gauge to compressor and started to measure difrent pionts with stepping 10kPa at 100kPa to 200kPa (200kPa is orginal boost MAP) now i writed all the numbers and from them calculated average step (31,5), thats what I came up:

At athmospheric pressure it shows @gauge 1300

@ 0kPa - 985

@ 10kPa - 1016,5

@ 20kPa - 1048

@ 30kPa - 1079,5

@ 40kPa - 1111

@ 50kPa - 1142,5

@ 60kPa - 1174

@ 70kPa - 1205,5

@ 80kPa - 1237

@ 90kPa - 1268,5

@ 100kPa - 1300

@ 110kPa - 1331,5

@ 120kPa - 1363

@ 130kPa - 1394,5

@ 140kPa - 1426

@ 150kPa - 1457,5

@ 160kPa - 1489

@ 170kPa - 1520,5

@ 180kPa - 1552

@ 190kPa - 1583,5

@ 200kPa - 1615

Gauge settings ate: linear curve, calibration is 255, offsett is 0

From all that I generated formula to get kPa for logging:

value - 985 / 3.15

and inserted it to the round.ini file.

This log file shows that everything should work fine: [url=http://ranz.planet.ee/S2/logi.JPG]LOG[/url]