20vt help

[hobbiniho]

quick question what does this sensor do it has a pipe that runs into the underside of the inlet manifold, the wiring looks aftermarket and was wondering if this could be the relocated map sensor??

[Ess_Three]

I wonder if this installation runs a lambda sensor and Cat?

no lambda and no cat 

So it's running with no protection...and no means of measuring and compensating for mixture. Odd...and risky.

It must have an external MAP sensor as the Emerald ECU needs one to run a turbo application properly.
I know the Emerald ECU will let you tun a lambda sensor.
But assuming it's mapped open loop and Alpha-n...it still needs a MAP...unless its running on wastegate pressure only 

I'd give your installation a good dose of looking at before you go much further...or it could be costly.

[Ess_Three]

quick question what does this sensor do it has a pipe that runs into the underside of the inlet manifold, the wiring looks aftermarket and was wondering if this could be the relocated map sensor??

I saw that previously and wondered the same.
My guess it yeah.

Is there a flexible hose that goes from it to the inlet manifold somewhere?
Or the pipework?

[F17BAD]

 the sensor in the pic on mine is a EGT probe and a must have item (at least o factory ECU) 

thats only sensor i have in that area it has a braided line coming from it, does yours ? i say this because yours looks different to mine

here is what mine is like (off the car)




running on 95 fuel is not ideal for this engine.. cant you get octain boost stuff in your area ??

[Ess_Three]

The sensor in question has a rubber hose connected to it...and looks like a Marelli MAP sensor to me.

95 octane is fine if you map accordingly...I had a 265 BHP/305 lb-ft 95 octane map on my S3 and it was just fine.
With a decent IC set up you can still get decent numbers safely on a K04 1.8T.

[tweed]

Octane boost does not work!!! Proven on a rolling road!

Shell v power is the best we can get

[F17BAD]

Audi recommend higher octane than 95 for this engine

higher octaine helps power

But...

also better to prevent Knock, and seen as he has no knock control id be wanting to use the best fuel i could

[Ess_Three]

Audi recommend higher octane than 95 for this engine

higher octaine helps power

But...

also better to prevent Knock, and seen as he has no knock control id be wanting to use the best fuel i could

True...for a standard ECU.
It's only and engine...you can map it for 91 octane if you had to.
He can't get 98...so properly mapped on 95 it will be just fine...only losing 5-10 BHP/lb-ft right on the limits.

I agree on the knock protection though...so it will need to be mapped sympathetically.
260ish BHP will be plenty for a Mk3's archaic chassis to be dealing with...it'll not be slow with that sort of power.

[hobbiniho]

as iv said it will be getting mapped for 95 as that is all i can get i know a few people with scoobies,evos,skylines that have had to get there cars mapped for 95 as octane additives dont work and its not worth taking the risk, when i get it mapped i wont be going for all out power i want a nice smooth delivery so it is actually driveable, as it is i can still hit the shift light in fifth without too much bother 

The sensor in question has a rubber hose connected to it...and looks like a Marelli MAP sensor to me.

95 octane is fine if you map accordingly...I had a 265 BHP/305 lb-ft 95 octane map on my S3 and it was just fine.
With a decent IC set up you can still get decent numbers safely on a K04 1.8T.

gold star to that man  http://www.emeraldm3d.com/map-sensors.html

[F17BAD]

when i had the ko4 turbo i had mine mapped fro drivability by carbon 9who did a outstanding custom map (around 96 runs were mad on the rolling road)

it was around the 260 bhp mark with 300lbft

and it FLEW!!!  kept up with everything i came across

but that was mapped with V power

but yeah, a good map on the k04 and they do fly in the mk3 shell