Manifold recommendations

[kkk]

Searching around all I can find is getting bill to port mine but can’t have my car off the road for a week.

Iv ordered a k280 and Intake pipe but what manifold should I buy? Looking at the cast ones on eBay that say high flow, anyone got any experienc? I’m thinking cheaper than buying a new standard then sending for porting.
And would I need to do it before fitting the new turbo?
Obviously I can’t get any recommendations from any one as no one seems to sell any.
Iv spent a **** load of money and don’t seem to get any answers from anyone I want to spend money with, or people I have spent money with.

my fault for buying another 1.8t and needing some advice to spend money

 

[hydro s3]

If your taking about buying a chinafold and sending it to Bill I dont think he does that. The only way to get it is to buy the package. I've heard of people getting ebay ones and them not being up to much.

 

[<tuffty/>]

K280 is a K03 I believe?

If its a K03 and you need Bill to port a manifold then I would just buy one from eBay and send him that... he can port that while you are still on the road and then you can do the lot in one hit

<tuffty/>

 

[ADs3]

I'd try finding a standard k03 manifold that isnt cracked through the 1.8t fb groups or ebay & have B5 port that for you

 

[hydro s3]

O right didn't know a K280 is a K03

 

[badger5]

new oe one is ~£400 fyi

 

[kkk]

I got sorted, got a nice ported manifold and my turbo turned up, just waiting on my tip,.
Have a question if anyone can answer it. I understand if I plug in a 3” maf the car will run lean, would adding the bam injectors even out the fuelling so I can use my stage 2 map for now?

 

[kkk]

 

[<tuffty/>]

I got sorted, got a nice ported manifold and my turbo turned up, just waiting on my tip,.
Have a question if anyone can answer it. I understand if I plug in a 3” maf the car will run lean, would adding the bam injectors even out the fuelling so I can use my stage 2 map for now?

Nope... both MAF and injectors need scaling to work... using bigger injectors won't make any real difference as the ecu will still be fighting against what its seeing from airflow vs AFR and will be trying its best to reign it in... also bear in mind that your N75 should also be disconnected electrically once the turbo is fitted as the map is setup for the airflow of a std turbo not a highflow one and you will get boost spikes and limp mode...

Basically... plan to fit the turbo etc then get it mapped as close to the next day as you can... if you can't do that then run the std MAF, injectors and N75 electrically disconnected and don't thrash it (partial throttle rather than hard acceleration) until you can get it mapped... get the injectors/MAF fitted on the day of mapping and get it mapped properly else you could end up nuking the engine

<tuffty/>

 

[kkk]

Nope... both MAF and injectors need scaling to work... using bigger injectors won't make any real difference as the ecu will still be fighting against what its seeing from airflow vs AFR and will be trying its best to reign it in... also bear in mind that your N75 should also be disconnected electrically once the turbo is fitted as the map is setup for the airflow of a std turbo not a highflow one and you will get boost spikes and limp mode...

Basically... plan to fit the turbo etc then get it mapped as close to the next day as you can... if you can't do that then run the std MAF, injectors and N75 electrically disconnected and don't thrash it (partial throttle rather than hard acceleration) until you can get it mapped... get the injectors/MAF fitted on the day of mapping and get it mapped properly else you could end up nuking the engine

<tuffty/>

thanks for the reply mate, I always thought could run a hybrid on a standard map but don’t get the full potential, could I run the 3” housing with it unplugged?

 

[<tuffty/>]

thanks for the reply mate, I always thought could run a hybrid on a standard map but don’t get the full potential, could I run the 3” housing with it unplugged?

running the MAF unplugged is arguably worse as the ECU relies on this for calculating fuelling... the ECU will run in its limp mode for this but tbh I would stick to the stock MAF until mapping time...

Yes you can 'run' a hybrid on a standard map but the way the map/ecu works means that the hybrid will produce more airflow for the same level of boost and the map is expecting to be able to control that rather than the sudden increase... there will be other tables in the map that are used to protect the engine against these things which will need adjusting too as sticking a hybrid onto a std map would be seen as going outside of its normal operating parameters and would most likely go into limp mode most of the time or worse case damage the engine...

You mentioned you had a stage 2 map... this would be worse as everything is turned up so wit the turbo you have now there is no telling if the boost levels and timing are safe...

I assume your car is a >=2001 so AUM? do you have rods?

<tuffty/>

 

[kkk]

running the MAF unplugged is arguably worse as the ECU relies on this for calculating fuelling... the ECU will run in its limp mode for this but tbh I would stick to the stock MAF until mapping time...

Yes you can 'run' a hybrid on a standard map but the way the map/ecu works means that the hybrid will produce more airflow for the same level of boost and the map is expecting to be able to control that rather than the sudden increase... there will be other tables in the map that are used to protect the engine against these things which will need adjusting too as sticking a hybrid onto a std map would be seen as going outside of its normal operating parameters and would most likely go into limp mode most of the time or worse case damage the engine...

You mentioned you had a stage 2 map... this would be worse as everything is turned up so wit the turbo you have now there is no telling if the boost levels and timing are safe...

I assume your car is a >=2001 so AUM? do you have rods?

<tuffty/>

That’s right on an aum, no rods but that’s why I went for the k280 over the k300, I need to fit it when I finally receive my intake pipe and will just have to run with the n75 unplugged, standard maf plugged in? This is a shame as I don’t have the money to map it straight away and need to find someone local to me with a rolling road to cap the torque

 

[badger5]

if you change both maf and injectors it will run ok on its adaptions, but unplug n75 to stay off boost until you get it mapped properly
imho

 

[kkk]

if you change both maf and injectors it will run ok on its adaptions, but unplug n75 to stay off boost until you get it mapped properly
imho

That’s what I thought should happen as well as il be using the 386s I think, I local tuner said I need the 550 ev14s but I think they are to much myself. Should I use my sensor or the sensor in the bigger housing? Thanks bill

 

[kkk]

Whilst I have you guys reading, do the 386cc injectors fit in the aum Inlet manifold? Will it need new seats or the 225 fuel rail?
Thanks

 

[kkk]

Everything is on and all runs nicely, just can’t drive it till I sort the gear linkage as it doesn’t seem to fit back on the bolts with the oversize tip, finished bang on 6 after fitting it in during other jobs. that moment you think your done and tidy up tools to find the last 2 bolts, then reality hits and I wasn’t driving home lol