Need some advice please

I recently fitted a boost gauge to my car and all seems well car will make 19psi on full throttle but it tails off quicker than i expected it would. I have a compbreak dv fitted but i have carried out a test that i was told to try on the dv and it dosn't seem to be sealing properly. Now i still have my original dv and i have that in the car now but the boost still tails of say after 4.5k.

I was hoping to try a different n75 and dv to see if that would hold the boost better? any other ideas all split pipes have been replaced etc. I am running standard airbox, standard fillter also.

check for oil under inlet manifold if there is you have a pipe split also check the top oil breather (under engine cover) in a y piece they have a tendancy to rot away

They have both been replaced mate for silicone ones.

You need to do a boost log as that's how the map might be so if actual and requested is the same then that's how it should be.

Edited 7 September, 201114 yr by missingmyvrs

Ok mate cheers,

Will my mapper have to carry it out i take it?

Need some advice please

I recently fitted a boost gauge to my car and all seems well car will make 19psi on full throttle but it tails off quicker than i expected it would. I have a compbreak dv fitted but i have carried out a test that i was told to try on the dv and it dosn't seem to be sealing properly. Now i still have my original dv and i have that in the car now but the boost still tails of say after 4.5k.

I was hoping to try a different n75 and dv to see if that would hold the boost better? any other ideas all split pipes have been replaced etc. I am running standard airbox, standard fillter also.

It is interesting that you stay at 19psi up to 4.5k, as Clive states maybe that is the way the map is made. i.e to start to restrict boost to protect turbo etc as it goes up the rev range. That does not mean to say you can not get that changed. With the REVO map the mapper can customise it for boost,fuel and timing. However the mapper maybe a bit too cautious??? what does boost tail off in, i.e what is boost PSI at 5k, 5.5k etc.

Again you can log boost via your OBD connection if you have VAGCOM

I am not sure how to go into the controller for Boost but Cilve or someone may help here. as I would be interested in that too. Maybe post on the Techi VAGCOM section to get help on that.

Ok mate cheers,

Will my mapper have to carry it out i take it?

Ah i see, i always thought that the revo map was very aggresive but my map seems to be very smooth was going really well untill i had the split pipes issue, but after i had the car in for the smoke test etc again after it made poor figures on the rollers he told me that he had tweaked the map to make it more aggressive but when i jumped in the car i didnt find it aggresive at all lol but he seemed to think it was.

Thats what made me think after i fitted the boost gauge that it was looseing boost because of the faulty dv and possible n75.

Ok mate cheers,

Will my mapper have to carry it out i take it?

Not if you have VAGCOM software you can plug into your ECU OBD connection and view the log of your driving conditions.

I am guessing you don't have that so in that case yes you will of get a friendly briskodian near to you that does have VAGCOM.

See here for list of VAGCOM owners :

http://briskoda.net/forums/forum/23-diagnostics-vcds/

Ah i see, i always thought that the revo map was very aggressive but my map seems to be very smooth was going really well until i had the split pipes issue, but after i had the car in for the smoke test etc again after it made poor figures on the rollers he told me that he had tweaked the map to make it more aggressive but when i jumped in the car i didn't find it aggressive at all lol but he seemed to think it was.

Thats what made me think after i fitted the boost gauge that it was looseing boost because of the faulty dv and possible n75.

The REVO Map is quite aggressive even in stage 1 form and should give you very good boost and power.

If not happy with it I would recommend you go back and get the mapper who did it to explain to you and show you what settings on Fuel,Boost and timing he dialed into the map. Go on to the REVO website to see the various settings if needed. He should be happy to show you this. You need to be 100% happy and know what he has done and what possible alterations he can do to those settings with the stage 1 tune without compromising engine/turbo. I had my stage 1 very aggressive and was top of limits on all the settings as the car was running very well. Don't go away without being happy that you were sorted. It could also be that as you had a previous Shark map that was set up differently and maybe more aggressive so you might be expecting too much from it. Hard to really say

Vagcom block 115 will show requested and actual hth

It would be handy if there was someone up here who has experience of stage 1 mapped vag 1.8t and could take it for a drive to see what they think. I can't even remember what the standard map feels like to compare it to.

The REVO mapper has assured me that he has set the map up to be an aggresive map. I don't know what else he can do though if it has been set up to be an aggresive map but it dosn't feel aggresive. It was aggresive when i first got the map but since i had the split pipes under the manifold something just dosn't feel right plus the loss of boost according to my gauge makes me think the n75 or dv or something else is playing up. I have a replacement n75 and dv coming to see if that makes a different.

Thanks for the replys

An aggresive map normally means lots of boost early on and not a lot up top

Just get him to log 115 and that will show any issues or not simple as that

Will do, i am back in college in a couple of weeks so will have more time then to go down and speak to him. cheers

An aggresive map normally means lots of boost early on and not a lot up top

Just get him to log 115 and that will show any issues or not simple as that

Just going to say the same

In a lot of cases a aggresive Map will give max boost very early on in the rev range and run out much earlier as if not your turbo is under a lot of load and stress, whereas a less aggresive map will give a more wider curve of power that give a more prolonged boost across the wider rev range but a the slight loss of instant max boost. This less aggresive map can actually give the feel of more power as it lasts longer.

You also must be realistic to what the capabilities are of the turbo. As said above smoothness is the key to these maps, but you'll never get an impressive bhp/torque figure that you can hold much beyond 4.5k (sorry to say).

Steve

Thanks for the replys guys.

I understand were use are coming from ill hopefully get down to my mapper in the next few weeks.