No Boost at all....need help

[andyg plym]

took lambda out today and cleaned it best i could , i know you cant really tell just from lookin at it, it was sooted up badly . Car still not boostin rite, just sits below 0 most of time and maximum of 0.2 bar boost.
Could movin maf to under turbo be a problem?

[A80Avant]

why? have you moved the maf to the turbo side without mapping for it?

[andyg plym]

because with tubular zorst manifold there is no room for maf and an air filter. read somewhere it wouldnt need remappin.Currently on a homefry ecu

[A80Avant]

Andy, im pretty sure that if you move the maf to the turbo side without remapping you cannot run the car properly.I think you found your problem...

[andyg plym]

i did run it before wiv maf on turbo and no filter to just see if it would cure it,but it was no better. that was before a new turbo tho. julian was runnin maf under the rs2 turbo that was on it before and said it ran fine. mind you it was runnin a digi-tec ecu.
Maybe i will put maf in front of the turbo just to see.

[A80Avant]

i have never done it myself,but i remember all the talks about moving the maf to the pressure side,that it always needed a remap to run properly.

[andyg plym]

yes i didnt want to put it there either as it runs too close to the manifold,there are threads on here where people have moved them and had no problems, but id rather move it, and also it has oil to deal with which all s2;s have

[DJones]

To get the best from the set up you will want a re map but IMHO it wont cause the problems you describe.

[javispa]

It may sound stupid, but is the throttle cable fine? A friend of mine was having boost problems and it was because the cable was loose / half broken.
By the way, I also think that moving the maf to the pressure size should need a remapping... at least I wouldn't do it without remapping the car, and without making sure that the maf is not going to blow because of the pressure.
I hope that you will solve the problem soon. Good luck!

[newsh]

Are you running the correct injectors for the chipset?

[andyg plym]

yes all stock aby. will try to move maf and see

[Knight Rider S4]

You have probably done this but you have checked to see if the engine timing fuse has blown as this wil stop you getting boost

[andyg plym]

yes every fuse! i wonder if maf is caked in oil in its location at moment ?

[GazzaG60]

it shouldn't be.

cut down a paintbrush and use it to cvlean the maf wires. use some carb cleaner or similar.

a turbo is mechanical so it should boost regardless as long as you are getting gases to it. this does sound mechanical to me.

i am making the presumption that the car doesn't cough, splitter, miss or cough out black smoke. what does an af gauge tell you. do you see plenty of fluctuation of tracking stoich. then when going to the map do you see it hit rich minus 1 light or so?

issues with lambda usually result in missing around the time when the transition to map occur or about 2 minutes after startup. initial start is not lambda controlled usually as the probe needs to warm up in order for it to find stoich. its usually downhill from there
if it runs smooth and revs ok it should boost. if it feels normal id still be saying turbo and getting gas to it. id expect cam timing being off would rear its head as lumpy running or something.

[newsh]

I still reckon its a boost leak, or a non spinning turbo, lack of oil to the turbo perhaps?