Nismo Afm Problems

[BJHDESIGN]

Hi Guys,

New to the forum, Owner of a 1995 R33 GTR V Spec.

Having abit of trouble setting up Nismo AFM's and 900cc Delphi Injectors(Only just installed)

Previously had 448.9hp at the wheels with Nismo 600cc injectors and standard AFM's

I think my dramas maybe with the HKS evc-s boost controller (I hate the thing!)

does anyone have any advise or tips to setting up the boost controller correctly, currently gets to 21.8psi and goes crazy.

and or are the 900cc injectors over kill for this set up? I still have the nismo injectors so can put them back in if needed.

Modifications are

3.5" full system turbo back,

Forged built engine - CP Pistons & Spool Rods

Nismo AFM's

Delphi 900cc Injectors

HKS 272 Cams

Ported Head

HKS 1.5mm Head gasket

Garret 2860-5 Turbos

Apexi Power FC With hand controller

Tomei cam gears

Split Fire Coil Packs

ARP Bolts throughout

walbro 460 fuel pump

Tomei 1.5mm Block oil restrictor

any advise would be greatly appreciated!

Cheers Ben

[Count Grantleyish]

Have you got it retuned with both AFMs and injectors?

[BJHDESIGN]

Its on the dyno at the moment, having another go tomorrow

[Count Grantleyish]

Your tuner should be able to change injectors and afm settings.

[breaker1845]

So what's the exact problem? Boost spiking can be from your waste gate.

[BJHDESIGN]

I'm pretty sure it's the wrong settings in there. There is next to no information on set up with this evc-s

[breaker1845]

The PowerFC needs to be setup properly for the AFMs and Injectors too as Grant said otherwise funny shit can happen. Get the tuner to have a fiddle with the controller once fuel/timing is sorted to try and hold a constant desired boost level as each controller is a bit different and can take some time to get it working properly.

Not sure what you mean exactly after 21.8psi it goes crazy. 22psi for that motor/setup is perfectly fine, a graph or any information on what is happening can help. Torque or power curve dropping off? Boost dropping off?

[R31Nismoid]

The EVC just controls boost

The PFC controls everything else.

So if you have a boost issue, it's the EVC. If it's anything else, that can only bee the way the setup is in the PFC or something else is up the creek like fuel pressure (if it's fine to a certain point of 21.8 and goes wild for example).

All of that though, tuner/workshop can easily diagnose... It's basic 101 checking time if that is the case. Gonna be hard over the internet.