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Car is Audi S4 Avant 93' with 2.5T AAN engine.

New setup:

Toyota 7mgte pistons machined

bmw h-beam rods

audi 2.5tdi crank

stock AAN motor block

2.54L of engine displacement

1200cc EV14 injectors

HX40Super 14#

tubular manifold

600x300x76 IC

3.5" DP and exhaust to the end

Pump fuel RON98

fuel supply: two bosch 044 with surge tank, fuel line ID 10mm

Power figures at the moment: 2.2bar boost -> 555hp and 575Nm from wheels

Plug n Play Vems motronic v3.6


I was wondering if it is possible to run extra injector on secondary boost tabel? Like people are doing with water injection. I run out of injectors even with 4bar on E90, so i need additional fuel. I thought i'll add another 2200cc injector before TB and then i should in theory have enough fuel for 2.5bar boost. What do you think guys?

GintsK?: 550hp and out of fuel? 1200 @4bar are capable to feed close to 900hp at 100%DC on E90. So delivered fuel flow is too low or your FPR is kind of crap.

Rst: 550hp was with pump fuel. I was running out of fuel with E90. Injector pulse with went to 23ms allready. My injectors are about 1400cc@4bar x 5 = 7L/min. I friend of mine run out of injectors on ~530kW at wheels and he had 4 x 2200=8.8L/min. With E90 or E100 you need a lot of fuel with lambda 0.72-0.75. So my question is still can i run extra injector on secondary boost table?

GintsK?: yes you probably can. Without precision. Better would be use injector staging - it works smoothly and include all necessary fuel calculations. But IMHO.... problem is in fuel delivery. You are still on Holset? It does not flow for 870Hp. Right? Then problem is fuel delivery. Injectors should handle it even on E100 on richer side. Or if you are on bigger turbo now you have to add third 044 because two can not deliver 7 l/min @[4+2.5bar=6.5bar] fuel pressure! So it is fuel delivery problem again.


Old setup:

stock pistons

h-beam rods

1200cc EV14 injectors

HX40Super 14#

tubular manifold

600x300x76 IC

3.5" DP and exhaust to the end

Using E85 as fuel

fuel supply: two bosch 044 with surge tank, fuel line ID 10mm

Power figures at the moment: 2.3bar boost -> 545hp and 600Nm from wheels

Plug n Play Vems motronic v3.6


I was wondering if is it possible to log 5 egt sensors with my vems? Or maybe someone knows some good equipment for this?


On 1 november 2010 the car went to dyno. It made 450hp an 540 nm from wheels. The resluts are little bit modest because one 044 bosch fule pump just can keep up with 80lb/h injectors and holset. Now i need to put two additional fuel pumps with surge tank, just to be sure. Lets hope 520hp and 650nm from wheels will be then achievable.

PS! The car is running now PnP? Vems motronic V3.6.


The car works and no trigger errors has been recorded so far (driven for about 150km). The problem was that i am using Fidanza ALU flywheel. It has to small trigger for the VR sensor. It has to be bigger. Second thing were the bolts on the flywheel that hold the toothed to the flywheel. These bolt are made for regular steel. These must be changed to stainless steel or smth else that dosent react to magnet.

Also the hall sensor (near the firewall) must be in it's original markings.

After doing these little "improvments" the car started.

Now it needs to be tuned correctly and then i can enjoy my car. :) Let's see how much power and torque will the holset HX40Super give my dailydriver.


'''relevant

We will verify your ign outputs when we see ign outputs in your config+tables ( h[2] )

The ignition can be spark-tested with Man mdn00 mdn04 mdn03 mdn02 mdn01 (also from the ignition outputs dialog in new VemsTune).


The setup uses HALL trigger from distributor. The HALL signal is inverted. (home-installed AudiTrigger/CamHALLInverter).

Measure voltage BEFORE and AFTER the inverter (during cranking)

The trigger_tooth=08 is good for

We MUST see your ignition output configuration as well (and reference trigger tooth array). Publish the mct dump (the tables are best, make a screenshot at a minimum)