MembersPage/RandoNomm (2009-03-19 18:36:32)

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.


Setting up analog in to read it from gauge or log it:

S2 3B original 200BAR MAP

I connected my compressor variable output (with gauge: 0 to 2,5BAR) directly to MAP input.

User z0tya from forum gave me somekinde of numbers what he calculated, I inserted them and started to play with them.

Calibration setting 32, offset 0

First I needed to get 100 reading at atmosphere pressure, I changed numbers at analog in to get it.

Now raised compressor oputput to 0,5BAR and played with numbers to get reading 150, then output to 2BAR and played to get 200. After that tested other readings, 0,1BAR - 110, 0,2BAR - 120, 0,3 - 130 etc. I din't have to change any more numbers at analog in curve becase it was enough only measure 3 points (0BAR - 1,5BAR - 2BAR).

These are numbers from analog in curve:

0 - 0

1 - 0

2 - 0

3 - 0

4 - 0

5 - 0

6 - 0

7 - 0

8 - 18

9 - 30

10 - 55

11 - 106

12 - 145

13 - 180

14 - 220

15 - 225

16 - 240

First 7 rows are 0 becase they din't change the reading, also are 15 and 16 set to linear in because they din't cange nothing also.

Now i borrowed my friends ECU what has 300BAR MAP and did the same thing.

Calibration 64, offset 0

Measured 5 points (0 - 0,5 - 1 - 1.5 - 2BAR) to get right reading (played vith analog in curve) and other readings between measured points where rigt also.

These are numbers from this analog in curve:

0 - 0

1 - 0

2 - 0

3 - 0

4 - 0

5 - 0

6 - 0

7 - 0

8 - 5

9 - 15

10 - 41

11 - 74

12 - 106

13 - 136

14 - 169

15 - 225

16 - 240

First 7 and 2 last are same as it was previously.

Now i'm wating my order from vems and when my stuff arrives, I'll measure the VEMS 300BAR MAP also.