I've got 3 different answers and I need to know ASAP what ecu-maf-pressure sensor to use for a 6 port turbo. I'm using all stock s5 turbo parts lower intake upper intake fuel rails ect. stock boost level with apexi safc2. Do I use all turbo ecu-maf-pressure sensor? Or na because of no fuel cut or vert? Yes I've used the search bar and google yes I know it's not the best to do a na/t and I already have a fully built Fc with a standalone and I know that's the best route. But I want to turbo my daily with all stock parts. Any info is very appreciated. Thank you

 

Na ecu-na maf- turbo pressure/boost sensor?
And Retard timing?

 

i would run the turbo stuff, because its setup for a turbo, but ymmv!

 

Bump

 

If your doing a 6 port turbo, you only option ( so you don't blow the engine) is aftermarket ECU with a good tune, neither of the stock ECUs will run it right

 

Thank you. I do understand that a standalone is best as I stated in the original post. I've known a handful of people that have had 6port turbo's running for years on stock ecu's ect. With no problems one said n350 ecu and maf and a turbo pressure sensor. I can't reach the others and some say all turbo others say very ecu reads boost. Idk I just wanted to hear personal experiences with na turbos.

 

Can't speak from personal experience but there are a few reasons some of those examples have survived:
Upgraded fuel pump increases the fuel pressure and adds fuel across the board.
Higher octane fuel improves knock resistance.
Turbo (or other larger than stock NA) injectors add fuel everywhere.

The overall strategy is dump a bunch of fuel and hope it stays together.

And the sensors need to match the ecu.

As for your actual question, a stock turbo ecu with the matching AFM, pressure sensor and injectors will give you the best chance at success.

 

If you want to use the stock S5 turbo ecu and sensors you need the US N370 unit. If you're going to do that, i would throw in some 720cc secondary injectors(especially with a bigger exhaust) and back the timing off a bit with the crank angle sensor.

 

No personal experience here but I follow a guy on instagram who had NA-T setup that worked really well. His username on insta is @eddieg_is_egofresh and he was running the stock NA ecu, stock na injectors and about 4-5psi on the stock t2 turbocharger.

It'll run fine because the na setup already runs rich. The biggest thing I can suggest though is a wideband gauge so you can be sure you're not leaning it out once you're getting into boost, and maybe even water methanol for the increased cooling and fuel content. This will reduce chance of detonation but probably isn't necessary at low boost levels.

OH and keep the boost LOW! until you figure out a more adequate way to provide more fuel and control it all.

 

Thank you for all your replies. I have an fd pump already in 550 primary secondaries I have a wideband and a safc2 I will run it rich on 91 and retard the timing about 10 degrees on stock boost fresh rebuilt oem turbo from rotary evolution. Am I scared yes I'll always be but as long as the timing is good temps good the fuels rich and the wideband is happy I'm happy