Guide - Removing SAI, N249 & n112 valve

[Poncho.:R]

So finally what resistor should I use? 330 ohm's 10w or 300 ohm's 5w???

 

[Damoegan]

330 ohm 10w..

 

[geo7087]

Has anyone else who's done this found post-fitting that their DV had a completely different noise? mine barely made any dump or chatter noise? hoping this was just down to an air leak when i changed things, swapped it all back and got the old chatter and DV sound back.

But i want to remove the SAI permanantly ideally

 

[wazza16]

Guys, done this on my Cupra and now runs like a badgers ass!EPC light on Stutters and gives of big pops like anti- lag lol sounds great but not rite! Any ideas I may revert back to standard see if problem disappears! Mite be coincedance tht it's done this due to somit else and not bypass! Any help wud be great!

 

[Jaycupra51]

Sounds like maf issues get it on vagcom
And see what codes come up

 

[wazza16]

i dont have vag com but could get her plugged in to see what comes up, the problem has now changed, took her out and ran fine then boost peaked at 0.8 bar WOT and the fluctuated from 0.8 to 0.25bar? now it peaks at about 5 psi and thats it? limp mode possibly? i unplugged MAF ran the same, revs dropped when i unplugged and ran rough for a sec then back to norm, ive put N112 and N249 valves back but still got SAI blocked off and just blocked vaccum outlet to it. Would it have went into limp mode due to N valve bypass? i know everyone does it so cant see it being this!!

Thanks

 

[Ric 2001]

Have you done anything with the air pump?

 

[wazza16]

ye removed it?
and blanked the port for it with the forge blanking plate?
resistor is in the plug also.

Thanks

 

[Jaycupra51]

Have u tried unplugging your n75 solenoid valve
It should give u 6psi of boost max when it is unplugged
And go to limp mode.if this happens then try to see if u can borrow
One of someone else's car and try there's to see if that helps,
Or it could be the actuator

 

[wazza16]

Ye i was going to do this im only geting around 6psi of boost just now gauge is in bar lol is the mk3 cupra same N75 valve? i dont know anyone around here with mk4 cupra!

Cheers

 

[Jaycupra51]

I don't know mate if they r or not

 

[Ric 2001]

Can you take pictures of whay you have done? See if there is anything I can spot.

 

[wazza16]

Ye I will try get some, I have put it bk to standard and still same issue of around 6 psi of boost, I've just got new coil packs vr6 clutch 14lb lightened flywheel and power gasket, will get this done if problem still there I'll plug her in see Wat codes im getting see if you guys can help me out!

 

[Ric 2001]

Well after 4 years with no troubles....

17834 - EVAP Purge Valve (N80): Open Circuit
P1426 - 35-00 - -
17956 - Boost Pressure Regulation Valve (N75): Open Circuit
P1548 - 35-00 - -
17841 - Secondary Air Pump Relay (J299): Open Circuit
P1433 - 35-00 - -
17936 - Camshaft Timing Adj. Bank1 (N205): Open Circuit
P1528 - 35-00 - -
17840 - Secondary Air Injection Solenoid Valve (N112): Open Circuit
P1432 - 35-00 - -
17695 - Boost Pressure Control Valve (N249): Open Circuit
P1287 - 35-00 - -

Has finally popped up!!!

 

[Ric 2001]

Fixed Fuse 14 popped

 

[mattymaxx]

lol Ive just done this using the ones off ebay!

works like a charm on my mk4 ibiza!

 

[Pew.]

One of the cables of the SAI pump goes to the airbox, what have people capped this hole with?

 

[wazza16]

Wack an open cone on her! lol

 

[Pew.]

I'm getting the cel light come on after doiung all 3, only code reading in the sai pump flow, dodgy resistor???

 

[Jaycupra51]

Yea would think so mate