Audi S2 TPS problems...

[driftin jo]

Your using an STR manifold with a GT35 ? So you have a k26 turbine housing on the
GT35 ? If so it's not surprising you only made 450hp. Also there no point in running a GT35 to produce 450hp, lots of lag for nothing.

[Carfreak]

The str manifold has a T3 flange

The car is mapped kinda smooth since I´m running with stock internals, in the winter I will change the rods and remap it, but not with the motronic ecu. It will be changed out for VEMS pnp instead!

(Possible to change the rods with the engine in car ?)

the turbo has full boost at 4000rpm (1,7bar)

Everything works great except for the low range (no boost) driving which is strange :s

but as u say it´s a good idea to remap the car, just waiting for money to change out the rods and buy a vems pnp!

[Carfreak]

Think I have found the problem now..

replaced my sparkplugs with new NGK V-Power and saw that one cable out from 2 of my coils was loose.. inspected it and plopp...

[prj]

Crap loom without grommets and other required parts (like strain relief blue inserts).

But this wasn't the cause of your problem, if you had a problem with the coil connection it would misfire up top, not on part throttle.

[Carfreak]

Well see what happens with the loom fixed. My other TPS was broken - the idle switch didn´t work :/

[vertigone]

Well see what happens with the loom fixed. My other TPS was broken - the idle switch didn´t work :/

How did you find that ? I've same symptom as you ...

[Carfreak]

I checked the TPS in vag-com, block 4 and 4:th value.. if it goes from 0100 to 0010 it works.. if if just have 0000 it´s broken like mine was
The broken loom was found when I replaced my spark plugs.

[vertigone]

ok thanks, on 3b ecu is not so verbose

[Carfreak]

well.. just a quick question. I´m running without the N75 valve, the connector is connected but there is no hoses in or out from it.. just running with wg spring pressure - 1,5bar. Is this okey or could it affect the idling or something ?

I will soon connect my n75. much easier to controll the boost from the laptop with vemstune