Big problem please help!!!!!!!!! Only 15 psi????????

[PitmanCupra]

Hi people im having problems with my 1.8T seat ibiza mk3. I currently have a K03s turbo stage 2 revo map, cat back exhaust air filter.

After i had my K03s fitted as i blown my old turbo, every time it hits 3,500 RPM/15 psi the car will not boost any more and the car stutters/spullters and if you keep ur foot down the psi drops to 5 Psi. Alot of people had told me different, some people thinking may be a misfire-coilpaks? personally i don't think that. Could it be a boost leak-where to???? or cud it be something to do with the k03s fitted wrong?

This is really doing my head!!!!! and wud be very greatfull if some1 can help me.

thanks Ollie

yea the MAF is new, tryed unplugging it but still does the same! i have tryied the coilpacks and checking 4 a boost leak. I just dunno wot 2 do now. cud it be anythink to do with the turbo??? not fitted right??

 

[Ibiza125]

Get a shot of vag-com. Even buy a cable off line and use the free software and get some codes for us.

 

[PitmanCupra]

Get a shot of vag-com. Even buy a cable off line and use the free software and get some codes for us.

where can i get a cable from dude?

 

[ibizacupra]

yea the MAF is new, tryed unplugging it but still does the same! i have tryied the coilpacks and checking 4 a boost leak. I just dunno wot 2 do now. cud it be anythink to do with the turbo??? not fitted right??

tried the coil packs? what replaced them with known new working ones do you mean?

plugs ok?

 

[PitmanCupra]

tried the coil packs? what replaced them with known new working ones do you mean?

plugs ok?

yea they are fine, i did blow my old turbo cud anythink else had gone or effected that???

 

[footlong]

you're having the same frikkin issues as i am dude! you got any more progress made. my next try is coil swapping. i've just gone ko3s etc.
Good luck, my misfire brother

 

[dewsy]

I have the same problem with the same k03s conversion. I have tried the MAF and coilpacks, had fault code reader plugged in and is saying something about the N75 valve circuit been open. Still no progress, don't know what else to try. Did you find the problem with yours doing the same?

 

[tommy2008cupra]

is n75 plumbed in correctly? or alternatively borrow someone elses n75 and try that to rule it out